Stainless Steel Rectangular-Tubes

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System of Measurement

Outside Width

Outside Height

Shape

Wall Thickness

Material

304/304L Stainless Steel

316 Stainless Steel

316/316L Stainless Steel

Length

Inside Width

Outside Corner Shape

Inside Height

Inside Corner Shape

Performance

Gauge

Appearance

Profile

RoHS

Compliant with Exemptions

Maximum Temperature

1,500° F to 1,599° F

Not Rated

Yield Strength

Less than 30,000 psi

30,000 psi to 39,999 psi

Specifications Met

Fabrication

Heat Treatment

Magnetic Properties

Export Control Classification Number (ECCN)

2B999

EAR99

DFARS Specialty Metals

Exempt

U.S.–Mexico–Canada Agreement (USMCA) Qualifying

REACH

185 Products

About Stainless Steel

Compare over 25 types of stainless steel to find the right material for you—all with material certificates for traceability.

Performance

Corrosion Resistant

Stand up to salt water and mild chemicals, such as ammonia

137 products

Highly Corrosion Resistant

Withstand prolonged exposure to salt water and most harsh chemicals

48 products

Application

Multipurpose

Balance strength, corrosion resistance, and workability

137 products

Mechanical Finish

Polished

Polished to a smooth, decorative finish

37 products

Multipurpose 304 Stainless Steel Rectangular Tubes

Create frames, machine enclosures, railing bases, and load-bearing components that hold up in corrosive environments. These tubes have flat sides, which make them easy to mount. However, they shouldn’t be used in fluid-handling or pressure-rated systems.

304/304L Stainless Steel—Dual certified, choose 304/304L whether you need 304, 304L, or an alloy that captures the benefits of both. Low carbon content improves weldability while maintaining corrosion resistance and strength.

Square Profile—Often used for posts and supports where loads can shift or come from multiple directions. With four uniform sides, these tubes distribute loads evenly across their surface. They bend consistently under uniform loads, so orientation is less critical.

Rectangular Profile—Best for beams and other long spans. This shape saves space but is strongest when the load only comes from one direction.

Welded—The common choice for most structural applications. These shapes are formed from a strip that’s welded along the length, so their strength may vary slightly at the seam under extreme loads. They have gently rounded corners that reduce stress points and improve strength.

	Outside		Inside
	Ht.	Wd.	Ht.	Wd.	Wall Thk. Tolerance	Material	Fabrication	Hardness	Specs. Met		1/2 ft. Long	1 ft. Long	2 ft. Long	3 ft. Long	4 ft. Long	5 ft. Long	6 ft. Long	10 ft. Long	20 ft. Long
Square Profile







				0.065" Thick Wall (16 ga.)

				1/2"	1/2"	0.37"	0.37"	-0.007" to 0.007"	304/304L Stainless Steel	Welded	Rockwell B90 (Medium)	ASTM A554	89825K31	00000	00000	000000	000000	000000	—	000000	000000	000000


				5/8"	5/8"	0.495"	0.495"	-0.007" to 0.007"	304/304L Stainless Steel	Welded	Rockwell B90 (Medium)	ASTM A554	89825K354	00000	00000	00000	00000	00000	—	00000	000000	—
				3/4"	3/4"	0.62"	0.62"	-0.007" to 0.007"	304/304L Stainless Steel	Welded	Rockwell B90 (Medium)	ASTM A554	89825K32	0000	00000	00000	00000	00000	—	00000	00000	000000
				1"	1"	0.87"	0.87"	-0.007" to 0.007"	304/304L Stainless Steel	Welded	Rockwell B90 (Medium)	ASTM A554	89825K33	00000	00000	00000	00000	00000	—	00000	000000	000000
				1 1/4"	1 1/4"	1.12"	1.12"	-0.007" to 0.007"	304/304L Stainless Steel	Welded	Rockwell B90 (Medium)	ASTM A554	89825K34	00000	00000	00000	00000	00000	—	00000	—	—
				1 1/2"	1 1/2"	1.37"	1.37"	-0.007" to 0.007"	304/304L Stainless Steel	Welded	Rockwell B90 (Medium)	ASTM A554	89825K35	00000	00000	00000	00000	00000	—	000000	000000	—
				2"	2"	1.87"	1.87"	-0.007" to 0.007"	304/304L Stainless Steel	Welded	Rockwell B90 (Medium)	ASTM A554	89825K36	00000	00000	00000	00000	00000	—	000000	—	—




						0.083" Thick Wall (14 ga.)

						1"	1"	0.834"	0.834"	-0.008" to 0.008"	304/304L Stainless Steel	Welded	Rockwell B90 (Medium)	ASTM A554	89825K355	00000	00000	00000	00000	00000	—	000000	000000	000000


						1 1/4"	1 1/4"	1.084"	1.084"	-0.008" to 0.008"	304/304L Stainless Steel	Welded	Rockwell B90 (Medium)	ASTM A554	89825K941	00000	00000	00000	00000	00000	—	000000	000000	—
						1 1/2"	1 1/2"	1.334"	1.334"	-0.008" to 0.008"	304/304L Stainless Steel	Welded	Rockwell B90 (Medium)	ASTM A554	89825K37	00000	00000	00000	00000	00000	—	000000	000000	—
						1 3/4"	1 3/4"	1.584"	1.584"	-0.008" to 0.008"	304/304L Stainless Steel	Welded	Rockwell B90 (Medium)	ASTM A554	89825K356	00000	00000	00000	00000	—	—	000000	—	—
						2"	2"	1.834"	1.834"	-0.008" to 0.008"	304/304L Stainless Steel	Welded	Rockwell B90 (Medium)	ASTM A554	89825K38	00000	00000	00000	00000	000000	—	000000	—	—




								0.12" Thick Wall (11 ga.)

								3/4"	3/4"	0.51"	0.51"	-0.012" to 0.012"	304/304L Stainless Steel	Welded	Rockwell B90 (Medium)	ASTM A554	89825K357	00000	00000	00000	00000	00000	—	000000	000000	—


								1"	1"	0.76"	0.76"	-0.012" to 0.012"	304/304L Stainless Steel	Welded	Rockwell B90 (Medium)	ASTM A554	89825K39	00000	00000	00000	00000	00000	—	000000	000000	000000
								1 1/4"	1 1/4"	1.01"	1.01"	-0.012" to 0.012"	304/304L Stainless Steel	Welded	Rockwell B90 (Medium)	ASTM A554	89825K41	00000	00000	00000	00000	00000	—	00000	000000	000000
								1 1/2"	1 1/2"	1.26"	1.26"	-0.012" to 0.012"	304/304L Stainless Steel	Welded	Rockwell B90 (Medium)	ASTM A554	89825K42	00000	00000	00000	00000	000000	—	000000	000000	000000
								1 3/4"	1 3/4"	1.51"	1.51"	-0.012" to 0.012"	304/304L Stainless Steel	Welded	Rockwell B90 (Medium)	ASTM A554	89825K942	00000	00000	—	000000	—	—	000000	—	—
								2"	2"	1.76"	1.76"	-0.012" to 0.012"	304/304L Stainless Steel	Welded	Rockwell B90 (Medium)	ASTM A554	89825K43	00000	00000	00000	000000	000000	—	000000	000000	000000
								2 1/2"	2 1/2"	2.26"	2.26"	-0.012" to 0.012"	304/304L Stainless Steel	Welded	Rockwell B90 (Medium)	ASTM A554	89825K44	00000	00000	000000	000000	—	—	000000	—	—
								3"	3"	2.76"	2.76"	-0.012" to 0.012"	304/304L Stainless Steel	Welded	Rockwell B90 (Medium)	ASTM A554	89825K45	00000	00000	000000	000000	000000	—	000000	—	—
								4"	4"	3.76"	3.76"	-0.012" to 0.012"	304/304L Stainless Steel	Welded	Rockwell B90 (Medium)	ASTM A554	89825K46	00000	00000	000000	000000	—	—	000000	—	—
								6"	6"	5.76"	5.76"	-0.012" to 0.012"	304/304L Stainless Steel	Welded	Rockwell B90 (Medium)	ASTM A554	89825K358	000000	000000	—	000000	—	—	000000	—	—




										0.18" Thick Wall (7 ga.)

										1"	1"	0.64"	0.64"	-0.018" to 0.018"	304/304L Stainless Steel	Welded	Rockwell B90 (Medium)	ASTM A554	89825K362	00000	00000	000000	000000	000000	—	000000	—	—


										1 1/2"	1 1/2"	1.14"	1.14"	-0.018" to 0.018"	304/304L Stainless Steel	Welded	Rockwell B90 (Medium)	ASTM A554	89825K86	00000	00000	00000	000000	—	—	000000	—	—
										2"	2"	1.64"	1.64"	-0.018" to 0.018"	304/304L Stainless Steel	Welded	Rockwell B90 (Medium)	ASTM A554	89825K87	00000	00000	000000	000000	—	—	000000	—	—
										2 1/2"	2 1/2"	2.14"	2.14"	-0.018" to 0.018"	304/304L Stainless Steel	Welded	Rockwell B90 (Medium)	ASTM A554	89825K88	00000	00000	000000	000000	—	—	000000	—	—
										3"	3"	2.64"	2.64"	-0.018" to 0.018"	304/304L Stainless Steel	Welded	Rockwell B90 (Medium)	ASTM A554	89825K944	00000	00000	—	000000	—	—	000000	—	—
										4"	4"	3.64"	3.64"	-0.018" to 0.018"	304/304L Stainless Steel	Welded	Rockwell B90 (Medium)	ASTM A554	89825K89	00000	000000	—	000000	—	—	000000	—	—
										5"	5"	4.64"	4.64"	-0.018" to 0.018"	304/304L Stainless Steel	Welded	Rockwell B90 (Medium)	ASTM A554	89825K364	000000	000000	—	000000	—	—	000000	—	—
6"										6"	5.64"	5.64"	-0.018" to 0.018"	304/304L Stainless Steel	Welded	Rockwell B90 (Medium)	ASTM A554	89825K951	00000	000000	—	000000	—	—	000000	—	—




		1/4" Thick Wall

		2"	2"							1 1/2"	1 1/2"	-0.025" to 0.025"	304/304L Stainless Steel	Welded	Rockwell B90 (Medium)	ASTM A554	89825K943	00000	000000	000000	000000	—	—	000000	—	—


		2 1/2"	2 1/2"							2"	2"	-0.025" to 0.025"	304/304L Stainless Steel	Welded	Rockwell B90 (Medium)	ASTM A554	89825K365	00000	000000	—	000000	—	—	000000	—	—
		3"	3"							2 1/2"	2 1/2"	-0.025" to 0.025"	304/304L Stainless Steel	Welded	Rockwell B90 (Medium)	ASTM A554	89825K47	00000	000000	—	000000	—	—	000000	—	—
		3 1/2"	3 1/2"							3"	3"	-0.025" to 0.025"	304/304L Stainless Steel	Welded	Rockwell B90 (Medium)	ASTM A554	89825K366	000000	000000	000000	000000	—	—	000000	—	—
		4"	4"							3 1/2"	3 1/2"	-0.025" to 0.025"	304/304L Stainless Steel	Welded	Rockwell B90 (Medium)	ASTM A554	89825K48	000000	000000	—	000000	—	—	000000	—	—
		5"	5"							4 1/2"	4 1/2"	-0.025" to 0.025"	304/304L Stainless Steel	Welded	Rockwell B90 (Medium)	ASTM A554	89825K956	000000	000000	—	000000	—	—	000000	—	—
		6"	6"							5 1/2"	5 1/2"	-0.025" to 0.025"	304/304L Stainless Steel	Welded	Rockwell B90 (Medium)	ASTM A554	89825K946	000000	000000	—	000000	—	—	00000000	—	—
		8"	8"							7 1/2"	7 1/2"	-0.025" to 0.025"	304/304L Stainless Steel	Welded	Rockwell B90 (Medium)	ASTM A554	89825K95	000000	000000	—	000000	—	—	00000000	—	—




				3/8" Thick Wall

				3"	3"					2 1/4"	2 1/4"	-0.037" to 0.037"	304/304L Stainless Steel	Welded	Rockwell B90 (Medium)	ASTM A554	89825K367	000000	000000	—	000000	—	—	000000	—	—


				4"	4"					3 1/4"	3 1/4"	-0.037" to 0.037"	304/304L Stainless Steel	Welded	Rockwell B90 (Medium)	ASTM A554	89825K945	000000	000000	—	000000	—	—	00000000	—	—
				5"	5"					4 1/4"	4 1/4"	-0.037" to 0.037"	304/304L Stainless Steel	Welded	Rockwell B90 (Medium)	ASTM A554	89825K368	000000	000000	—	000000	—	—	00000000	—	—
				6"	6"					5 1/4"	5 1/4"	-0.037" to 0.037"	304/304L Stainless Steel	Welded	Rockwell B90 (Medium)	ASTM A554	89825K953	000000	000000	—	000000	—	—	00000000	—	—
				8"	8"					7 1/4"	7 1/4"	-0.037" to 0.037"	304/304L Stainless Steel	Welded	Rockwell B90 (Medium)	ASTM A554	89825K952	000000	000000	—	00000000	—	—	00000000	—	—




										1 mm Thick Wall

						20 mm	20 mm			18 mm	18 mm	-0.100 mm to 0.100 mm	304 Stainless Steel	Welded	Rockwell B90 (Medium)	ASTM A554	89825K404	—	00000	—	00000	—	000000	—	—	—




										2 mm Thick Wall

										20 mm	20 mm	16 mm	16 mm	-0.200 mm to 0.200 mm	304 Stainless Steel	Welded	Rockwell B90 (Medium)	ASTM A554, EN 10378	89825K405	—	00000	—	00000	—	000000	—	—	—


										25 mm	25 mm	21 mm	21 mm	-0.200 mm to 0.200 mm	304 Stainless Steel	Welded	Rockwell B90 (Medium)	ASTM A554	89825K406	—	00000	—	000000	—	000000	—	—	—
										30 mm	30 mm	26 mm	26 mm	-0.200 mm to 0.200 mm	304 Stainless Steel	Welded	Rockwell B90 (Medium)	ASTM A554, EN 10378	89825K407	—	00000	—	000000	—	000000	—	—	—
										35 mm	35 mm	31 mm	31 mm	-0.200 mm to 0.200 mm	304 Stainless Steel	Welded	Rockwell B90 (Medium)	ASTM A554	89825K408	—	00000	—	000000	—	000000	—	—	—




								4 mm Thick Wall

								40 mm	40 mm			32 mm	32 mm	-0.400 mm to 0.400 mm	304 Stainless Steel	Welded	Rockwell B90 (Medium)	ASTM A554	89825K409	—	000000	—	000000	—	000000	—	—	—


								50 mm	50 mm			42 mm	42 mm	-0.400 mm to 0.400 mm	304 Stainless Steel	Welded	Rockwell B90 (Medium)	ASTM A554	89825K412	—	000000	—	000000	—	000000	—	—	—
								60 mm	60 mm			52 mm	52 mm	-0.400 mm to 0.400 mm	304 Stainless Steel	Welded	Rockwell B90 (Medium)	ASTM A554	89825K414	—	000000	—	000000	—	000000	—	—	—




												5 mm Thick Wall

												60 mm	60 mm	50 mm	50 mm	-0.500 mm to 0.500 mm	304 Stainless Steel	Welded	Rockwell B90 (Medium)	ASTM A554	89825K415	—	000000	—	000000	—	000000	—	—	—


Rectangular Profile







														0.065" Thick Wall (16 ga.)

														1/2"	1"	0.37"	0.87"	-0.007" to 0.007"	304/304L Stainless Steel	Welded	Rockwell B90 (Medium)	ASTM A554	89825K372	0000	00000	00000	00000	00000	—	00000	—	—


														1/2"	1 1/2"	0.37"	1.37"	-0.007" to 0.007"	304/304L Stainless Steel	Welded	Rockwell B90 (Medium)	ASTM A554	89825K374	00000	00000	00000	00000	—	—	000000	—	—
														1/2"	2"	0.37"	1.87"	-0.007" to 0.007"	304/304L Stainless Steel	Welded	Rockwell B90 (Medium)	ASTM A554	89825K375	00000	00000	—	00000	—	—	000000	—	—
		3/4"												1"	0.62"	0.87"	-0.007" to 0.007"	304/304L Stainless Steel	Welded	Rockwell B90 (Medium)	ASTM A554	89825K376	00000	00000	00000	00000	—	—	000000	—	—
		3/4"	1 1/2"											0.62"	1.37"	-0.007" to 0.007"	304/304L Stainless Steel	Welded	Rockwell B90 (Medium)	ASTM A554	89825K56	00000	00000	00000	00000	00000	—	00000	—	—
		1"	1 1/2"											0.87"	1.37"	-0.007" to 0.007"	304/304L Stainless Steel	Welded	Rockwell B90 (Medium)	ASTM A554	89825K23	00000	00000	00000	00000	—	—	00000	—	—
		1"	2"											0.87"	1.87"	-0.007" to 0.007"	304/304L Stainless Steel	Welded	Rockwell B90 (Medium)	ASTM A554	89825K947	00000	00000	00000	00000	—	—	000000	—	—
		1 1/2"	2"											1.37"	1.87"	-0.007" to 0.007"	304/304L Stainless Steel	Welded	Rockwell B90 (Medium)	ASTM A554	89825K24	00000	00000	00000	00000	00000	—	000000	—	—




														0.083" Thick Wall (14 ga.)

														1"	2"	0.834"	1.834"	-0.008" to 0.008"	304/304L Stainless Steel	Welded	Rockwell B90 (Medium)	ASTM A554	89825K377	00000	00000	00000	00000	00000	—	000000	—	—


				1"	3"									0.834"	2.834"	-0.008" to 0.008"	304/304L Stainless Steel	Welded	Rockwell B90 (Medium)	ASTM A554	89825K378	00000	00000	—	00000	—	—	000000	—	—
				1 1/2"	3"									1.334"	2.834"	-0.008" to 0.008"	304/304L Stainless Steel	Welded	Rockwell B90 (Medium)	ASTM A554	89825K382	00000	00000	00000	00000	—	—	000000	—	—




						0.12" Thick Wall (11 ga.)

						1"	1 1/2"							0.76"	1.26"	-0.012" to 0.012"	304/304L Stainless Steel	Welded	Rockwell B90 (Medium)	ASTM A554	89825K57	00000	00000	00000	00000	00000	—	000000	—	—


						1"	2"							0.76"	1.76"	-0.012" to 0.012"	304/304L Stainless Steel	Welded	Rockwell B90 (Medium)	ASTM A554	89825K58	00000	00000	00000	00000	000000	—	000000	000000	—
						1"	3"							0.76"	2.76"	-0.012" to 0.012"	304/304L Stainless Steel	Welded	Rockwell B90 (Medium)	ASTM A554	89825K59	00000	00000	00000	000000	—	—	000000	—	—
						1 1/2"	2"							1.26"	1.76"	-0.012" to 0.012"	304/304L Stainless Steel	Welded	Rockwell B90 (Medium)	ASTM A554	89825K384	00000	00000	00000	000000	000000	—	000000	—	—
						1 1/2"	2 1/2"							1.26"	2.26"	-0.012" to 0.012"	304/304L Stainless Steel	Welded	Rockwell B90 (Medium)	ASTM A554	89825K385	00000	00000	00000	000000	—	—	000000	—	—
						1 1/2"	3"							1.26"	2.76"	-0.012" to 0.012"	304/304L Stainless Steel	Welded	Rockwell B90 (Medium)	ASTM A554	89825K61	00000	00000	—	000000	—	—	000000	—	—
						2"	3"							1.76"	2.76"	-0.012" to 0.012"	304/304L Stainless Steel	Welded	Rockwell B90 (Medium)	ASTM A554	89825K63	00000	00000	000000	000000	—	—	000000	—	—
						2"	4"							1.76"	3.76"	-0.012" to 0.012"	304/304L Stainless Steel	Welded	Rockwell B90 (Medium)	ASTM A554	89825K66	00000	00000	—	000000	—	—	000000	—	—
						2"	6"							1.76"	5.76"	-0.012" to 0.012"	304/304L Stainless Steel	Welded	Rockwell B90 (Medium)	ASTM A554	89825K25	00000	000000	—	000000	—	—	000000	—	—
						3"	4"							2.76"	3.76"	-0.012" to 0.012"	304/304L Stainless Steel	Welded	Rockwell B90 (Medium)	ASTM A554	89825K386	00000	000000	—	000000	—	—	000000	—	—
						3"	5"			2.76"				4.76"	-0.012" to 0.012"	304/304L Stainless Steel	Welded	Rockwell B90 (Medium)	ASTM A554	89825K387	00000	000000	—	000000	—	—	000000	—	—


						3"	6"			2.76"	5.76"			-0.012" to 0.012"	304/304L Stainless Steel	Welded	Rockwell B90 (Medium)	ASTM A554	89825K388	00000	000000	—	000000	—	—	000000	—	—




										0.18" Thick Wall (7 ga.)

								1"		2"	0.64"			1.64"	-0.018" to 0.018"	304/304L Stainless Steel	Welded	Rockwell B90 (Medium)	ASTM A554	89825K392	00000	00000	000000	000000	000000	—	000000	—	—


								1 1/2"	3"	1.14"	2.64"			-0.018" to 0.018"	304/304L Stainless Steel	Welded	Rockwell B90 (Medium)	ASTM A554	89825K62	00000	00000	—	000000	—	—	000000	—	—
								2"	3"	1.64"	2.64"			-0.018" to 0.018"	304/304L Stainless Steel	Welded	Rockwell B90 (Medium)	ASTM A554	89825K64	00000	00000	—	000000	—	—	000000	—	—
								2"	4"	1.64"	3.64"			-0.018" to 0.018"	304/304L Stainless Steel	Welded	Rockwell B90 (Medium)	ASTM A554	89825K67	00000	000000	—	000000	—	—	000000	—	—
2"								5"	1.64"	4.64"	-0.018" to 0.018"			304/304L Stainless Steel	Welded	Rockwell B90 (Medium)	ASTM A554	89825K394	00000	000000	—	000000	—	—	000000	—	—
2"	6"							1.64"	5.64"	-0.018" to 0.018"	304/304L Stainless Steel			Welded	Rockwell B90 (Medium)	ASTM A554	89825K72	00000	000000	—	000000	—	—	000000	—	—
2"	8"							1.64"	7.64"	-0.018" to 0.018"	304/304L Stainless Steel			Welded	Rockwell B90 (Medium)	ASTM A554	89825K395	000000	000000	—	000000	—	—	000000	—	—
3"	4"							2.64"	3.64"	-0.018" to 0.018"	304/304L Stainless Steel			Welded	Rockwell B90 (Medium)	ASTM A554	89825K69	00000	000000	—	000000	—	—	000000	—	—
3"	5"							2.64"	4.64"	-0.018" to 0.018"	304/304L Stainless Steel			Welded	Rockwell B90 (Medium)	ASTM A554	89825K396	00000	000000	—	000000	—	—	000000	—	—
3"	6"							2.64"	5.64"	-0.018" to 0.018"	304/304L Stainless Steel			Welded	Rockwell B90 (Medium)	ASTM A554	89825K73	000000	000000	—	000000	—	—	000000	—	—
3"	8"							2.64"	7.64"	-0.018" to 0.018"	304/304L Stainless Steel			Welded	Rockwell B90 (Medium)	ASTM A554	89825K397	000000	000000	—	000000	—	—	000000	—	—


4"	6"							3.64"	5.64"	-0.018" to 0.018"	304/304L Stainless Steel	Welded	Rockwell B90 (Medium)	ASTM A554	89825K74	000000	000000	—	000000	—	—	000000	—	—
4"	8"							3.64"	7.64"	-0.018" to 0.018"	304/304L Stainless Steel	Welded	Rockwell B90 (Medium)	ASTM A554	89825K398	000000	000000	—	000000	—	—	000000	—	—




								1/4" Thick Wall

								2"	3"	1 1/2"	2 1/2"	-0.025" to 0.025"	304/304L Stainless Steel	Welded	Rockwell B90 (Medium)	ASTM A554	89825K65	00000	000000	—	000000	—	—	000000	—	—


								2"	4"	1 1/2"	3 1/2"	-0.025" to 0.025"	304/304L Stainless Steel	Welded	Rockwell B90 (Medium)	ASTM A554	89825K26	00000	000000	—	000000	—	—	000000	—	—
		2"						5"	1 1/2"	4 1/2"	-0.025" to 0.025"	304/304L Stainless Steel	Welded	Rockwell B90 (Medium)	ASTM A554	89825K4	00000	000000	—	000000	—	—	000000	—	—
		2"	6"					1 1/2"	5 1/2"	-0.025" to 0.025"	304/304L Stainless Steel	Welded	Rockwell B90 (Medium)	ASTM A554	89825K948	000000	000000	—	000000	—	—	000000	—	—
		3"	4"					2 1/2"	3 1/2"	-0.025" to 0.025"	304/304L Stainless Steel	Welded	Rockwell B90 (Medium)	ASTM A554	89825K71	000000	000000	—	000000	—	—	000000	—	—
		3"	5"					2 1/2"	4 1/2"	-0.025" to 0.025"	304/304L Stainless Steel	Welded	Rockwell B90 (Medium)	ASTM A554	89825K401	00000	000000	—	000000	—	—	000000	—	—
		3"	6"					2 1/2"	5 1/2"	-0.025" to 0.025"	304/304L Stainless Steel	Welded	Rockwell B90 (Medium)	ASTM A554	89825K402	000000	000000	—	000000	—	—	000000	—	—
		4"	6"					3 1/2"	5 1/2"	-0.025" to 0.025"	304/304L Stainless Steel	Welded	Rockwell B90 (Medium)	ASTM A554	89825K949	000000	000000	—	000000	—	—	00000000	—	—
		4"	8"					3 1/2"	7 1/2"	-0.025" to 0.025"	304/304L Stainless Steel	Welded	Rockwell B90 (Medium)	ASTM A554	89825K27	000000	000000	—	000000	—	—	00000000	—	—




				3/8" Thick Wall

				4"	6"			3 1/4"	5 1/4"	-0.037" to 0.037"	304/304L Stainless Steel	Welded	Rockwell B90 (Medium)	ASTM A554	89825K955	000000	000000	—	000000	—	—	00000000	—	—


				4"	8"			3 1/4"	7 1/4"	-0.037" to 0.037"	304/304L Stainless Steel	Welded	Rockwell B90 (Medium)	ASTM A554	89825K403	000000	000000	—	00000000	—	—	00000000	—	—
				6"	8"			5 1/4"	7 1/4"	-0.037" to 0.037"	304/304L Stainless Steel	Welded	Rockwell B90 (Medium)	ASTM A554	89825K954	000000	000000	—	00000000	—	—	00000000	—	—




								1.5 mm Thick Wall

								10 mm	30 mm	7 mm	27 mm	-0.150 mm to 0.150 mm	304 Stainless Steel	Welded	Rockwell B90 (Medium)	ASTM A554	89825K416	—	00000	—	00000	—	00000	—	—	—


								20 mm	40 mm	17 mm	37 mm	-0.150 mm to 0.150 mm	304 Stainless Steel	Welded	Rockwell B90 (Medium)	ASTM A554	89825K417	—	00000	—	00000	—	000000	—	—	—




										2 mm Thick Wall

						40 mm				60 mm	36 mm	56 mm	-0.200 mm to 0.200 mm	304 Stainless Steel	Welded	Rockwell B90 (Medium)	ASTM A554	89825K418	—	00000	—	000000	—	000000	—	—	—




										3 mm Thick Wall

										30 mm	50 mm	24 mm	44 mm	-0.300 mm to 0.300 mm	304 Stainless Steel	Welded	Rockwell B90 (Medium)	ASTM A554	89825K422	—	00000	—	000000	—	000000	—	—	—


										30 mm	60 mm	24 mm	54 mm	-0.300 mm to 0.300 mm	304 Stainless Steel	Welded	Rockwell B90 (Medium)	ASTM A554, EN 10378	89825K424	—	000000	—	000000	—	000000	—	—	—
										40 mm	100 mm	34 mm	94 mm	-0.300 mm to 0.300 mm	304 Stainless Steel	Welded	Rockwell B90 (Medium)	EN 10378	89825K425	—	000000	—	000000	—	000000	—	—	—




												5 mm Thick Wall

												80 mm	120 mm	70 mm	110 mm	-0.500 mm to 0.500 mm	304 Stainless Steel	Welded	Rockwell B90 (Medium)	ASTM A554	89825K426	—	000000	—	000000	—	00000000	—	—	—

Highly Corrosion-Resistant 316 Stainless Steel Rectangular Tubes

Create flat-sided structural components that hold up in harsh, highly corrosive environments. They meet ASTM A554 specifications for use in structural applications but are not for use in fluid-handling or pressure-rated systems. These tubes maintain their corrosion resistance up to 1500° F.

316/316L Stainless Steel—Dual certified to meet both 316 and 316L requirements. The low carbon content makes this stainless steel easy to weld while maintaining strength and corrosion resistance.

Rectangular Profile—Best for beams and other long spans. This shape saves space but is strongest when the load only comes from one direction.

Certificates with a traceable lot number are available for these products. Download certificates from ORDER HISTORY after your order ships.

	Outside		Inside
	Ht.	Wd.	Ht.	Wd.	Wall Thk. Tolerance	Material	Fabrication	Hardness	Specs. Met		1/2 ft. Long	1 ft. Long	2 ft. Long	3 ft. Long	4 ft. Long	6 ft. Long	10 ft. Long	20 ft. Long
Square Profile







				0.062" Thick Wall (16 ga.)

				3/4"	3/4"	0.626"	0.626"	-0.006" to 0.006"	316/316L Stainless Steel	Welded	Rockwell B90 (Medium)	ASTM A554	2937K12	000000	000000	000000	000000	000000	000000	—	—


				1 1/2"	1 1/2"	1.376"	1.376"	-0.006" to 0.006"	316/316L Stainless Steel	Welded	Rockwell B90 (Medium)	ASTM A554	2937K31	00000	00000	00000	00000	—	000000	—	—
				2"	2"	1.876"	1.876"	-0.006" to 0.006"	316/316L Stainless Steel	Welded	Rockwell B90 (Medium)	ASTM A554	2937K16	00000	00000	00000	000000	000000	000000	—	—




						0.065" Thick Wall (16 ga.)

						1"	1"	0.87"	0.87"	-0.007" to 0.007"	316/316L Stainless Steel	Welded	Rockwell B90 (Medium)	ASTM A554	2937K11	00000	00000	00000	00000	00000	000000	—	—




								0.12" Thick Wall (11 ga.)

								3/4"	3/4"	0.51"	0.51"	-0.012" to 0.012"	316/316L Stainless Steel	Welded	Rockwell B90 (Medium)	ASTM A554	2937K38	00000	00000	00000	00000	00000	000000	—	—


								1"	1"	0.76"	0.76"	-0.012" to 0.012"	316/316L Stainless Steel	Welded	Rockwell B90 (Medium)	ASTM A554	2937K13	00000	00000	00000	00000	00000	000000	0000000	0000000
								1 1/4"	1 1/4"	1.01"	1.01"	-0.012" to 0.012"	316/316L Stainless Steel	Welded	Rockwell B90 (Medium)	ASTM A554	2937K14	00000	00000	—	00000	—	000000	—	—
								1 1/2"	1 1/2"	1.26"	1.26"	-0.012" to 0.012"	316/316L Stainless Steel	Welded	Rockwell B90 (Medium)	ASTM A554	2937K15	00000	00000	00000	000000	000000	000000	000000	—
								2"	2"	1.76"	1.76"	-0.012" to 0.012"	316/316L Stainless Steel	Welded	Rockwell B90 (Medium)	ASTM A554	2937K17	00000	00000	00000	000000	000000	000000	000000	—
								2 1/2"	2 1/2"	2.26"	2.26"	-0.012" to 0.012"	316/316L Stainless Steel	Welded	Rockwell B90 (Medium)	ASTM A554	2937K18	00000	00000	000000	000000	—	000000	—	—
								3"	3"	2.76"	2.76"	-0.012" to 0.012"	316/316L Stainless Steel	Welded	Rockwell B90 (Medium)	ASTM A554	2937K19	00000	00000	—	000000	—	000000	—	—
								4"	4"	3.76"	3.76"	-0.012" to 0.012"	316/316L Stainless Steel	Welded	Rockwell B90 (Medium)	ASTM A554	2937K39	00000	000000	000000	000000	—	000000	—	—




										0.18" Thick Wall (7 ga.)

										1 1/2"	1 1/2"	1.14"	1.14"	-0.018" to 0.018"	316/316L Stainless Steel	Welded	Rockwell B90 (Medium)	ASTM A554	2937K61	00000	00000	—	000000	—	000000	—	—


										2"	2"	1.64"	1.64"	-0.018" to 0.018"	316/316L Stainless Steel	Welded	Rockwell B90 (Medium)	ASTM A554	2937K62	00000	00000	000000	000000	000000	000000	—	—
										2 1/2"	2 1/2"	2.14"	2.14"	-0.018" to 0.018"	316/316L Stainless Steel	Welded	Rockwell B90 (Medium)	ASTM A554	2937K63	00000	000000	—	000000	—	000000	—	—
										3"	3"	2.64"	2.64"	-0.018" to 0.018"	316/316L Stainless Steel	Welded	Rockwell B90 (Medium)	ASTM A554	2937K23	00000	000000	—	000000	—	000000	—	—
										4"	4"	3.64"	3.64"	-0.018" to 0.018"	316/316L Stainless Steel	Welded	Rockwell B90 (Medium)	ASTM A554	2937K65	00000	000000	—	000000	—	000000	—	—




												1/4" Thick Wall

												2"	2"	1 1/2"	1 1/2"	-0.025" to 0.025"	316/316L Stainless Steel	Welded	Rockwell B90 (Medium)	ASTM A554	2937K24	00000	000000	000000	000000	000000	000000	000000	—


												2 1/2"	2 1/2"	2"	2"	-0.025" to 0.025"	316/316L Stainless Steel	Welded	Rockwell B90 (Medium)	ASTM A554	2937K26	00000	000000	—	000000	—	000000	—	—
												3"	3"	2 1/2"	2 1/2"	-0.025" to 0.025"	316/316L Stainless Steel	Welded	Rockwell B90 (Medium)	ASTM A554	2937K27	00000	000000	—	000000	—	000000	—	—
												4"	4"	3 1/2"	3 1/2"	-0.025" to 0.025"	316/316L Stainless Steel	Welded	Rockwell B90 (Medium)	ASTM A554	2937K29	000000	000000	—	000000	—	000000	—	—
												5"	5"	4 1/2"	4 1/2"	-0.025" to 0.025"	316/316L Stainless Steel	Welded	Rockwell B90 (Medium)	ASTM A554	2937K41	000000	000000	—	000000	—	00000000	—	—
												6"	6"	5 1/2"	5 1/2"	-0.025" to 0.025"	316/316L Stainless Steel	Welded	Rockwell B90 (Medium)	ASTM A554	2937K42	000000	000000	—	000000	—	00000000	—	—




												3/8" Thick Wall

		4"	4"									3 1/4"	3 1/4"	-0.037" to 0.037"	316/316L Stainless Steel	Welded	Rockwell B90 (Medium)	ASTM A554	2937K51	000000	000000	—	00000000	—	00000000	—	—


		5"	5"									4 1/4"	4 1/4"	-0.037" to 0.037"	316/316L Stainless Steel	Welded	Rockwell B90 (Medium)	ASTM A554	2937K52	000000	000000	—	00000000	—	00000000	—	—
		6"	6"									5 1/4"	5 1/4"	-0.037" to 0.037"	316/316L Stainless Steel	Welded	Rockwell B90 (Medium)	ASTM A554	2937K53	000000	000000	—	00000000	—	00000000	—	—
		8"	8"									7 1/4"	7 1/4"	-0.037" to 0.037"	316/316L Stainless Steel	Welded	Rockwell B90 (Medium)	ASTM A554	2937K54	000000	00000000	—	00000000	—	00000000	—	—


		Rectangular Profile







												0.062" Thick Wall (16 ga.)

						1"						3"	0.876"	2.876"	-0.006" to 0.006"	316/316L Stainless Steel	Welded	Rockwell B90 (Medium)	ASTM A554	2937K76	00000	00000	00000	000000	—	000000	—	—




												0.12" Thick Wall (11 ga.)

												1"	1 1/2"	0.76"	1.26"	-0.012" to 0.012"	316/316L Stainless Steel	Welded	Rockwell B90 (Medium)	ASTM A554	2937K32	00000	00000	00000	00000	—	000000	—	—


												1"	2"	0.76"	1.76"	-0.012" to 0.012"	316/316L Stainless Steel	Welded	Rockwell B90 (Medium)	ASTM A554	2937K33	00000	00000	00000	000000	—	000000	—	—
												1"	3"	0.76"	2.76"	-0.012" to 0.012"	316/316L Stainless Steel	Welded	Rockwell B90 (Medium)	ASTM A554	2937K34	00000	00000	—	000000	—	000000	—	—
												2"	3"	1.76"	2.76"	-0.012" to 0.012"	316/316L Stainless Steel	Welded	Rockwell B90 (Medium)	ASTM A554	2937K35	00000	00000	000000	000000	—	000000	—	—
												2"	4"	1.76"	3.76"	-0.012" to 0.012"	316/316L Stainless Steel	Welded	Rockwell B90 (Medium)	ASTM A554	2937K36	00000	000000	000000	000000	—	000000	—	—




												0.18" Thick Wall (7 ga.)

												2"	3"	1.64"	2.64"	-0.018" to 0.018"	316/316L Stainless Steel	Welded	Rockwell B90 (Medium)	ASTM A554	2937K71	00000	000000	—	000000	—	000000	—	—


												2"	4"	1.64"	3.64"	-0.018" to 0.018"	316/316L Stainless Steel	Welded	Rockwell B90 (Medium)	ASTM A554	2937K21	00000	000000	—	000000	—	000000	—	—




														1/4" Thick Wall

										2"	4"			1 1/2"	3 1/2"	-0.025" to 0.025"	316/316L Stainless Steel	Welded	Rockwell B90 (Medium)	ASTM A554	2937K25	000000	000000	—	000000	—	000000	—	—


										3"	4"			2 1/2"	3 1/2"	-0.025" to 0.025"	316/316L Stainless Steel	Welded	Rockwell B90 (Medium)	ASTM A554	2937K81	000000	000000	—	000000	—	00000000	—	—
										3"	6"			2 1/2"	5 1/2"	-0.025" to 0.025"	316/316L Stainless Steel	Welded	Rockwell B90 (Medium)	ASTM A554	2937K82	000000	000000	—	000000	—	00000000	—	—
										4"	6"			3 1/2"	5 1/2"	-0.025" to 0.025"	316/316L Stainless Steel	Welded	Rockwell B90 (Medium)	ASTM A554	2937K83	000000	000000	—	000000	—	00000000	—	—
										4"	8"			3 1/2"	7 1/2"	-0.025" to 0.025"	316/316L Stainless Steel	Welded	Rockwell B90 (Medium)	ASTM A554	2937K84	000000	000000	—	000000	—	00000000	—	—




														3/8" Thick Wall

4"	6"													3 1/4"	5 1/4"	-0.037" to 0.037"	316/316L Stainless Steel	Welded	Rockwell B90 (Medium)	ASTM A554	2937K91	000000	000000	—	00000000	—	00000000	—	—

Polished Highly Corrosion-Resistant 316 Stainless Steel Rectangular Tubes

Polished to a brushed finish on the outside, these tubes are often used to create decorative enclosures and industrial workstations in environments that require superior corrosion resistance. They meet ASTM A554 for use in structural applications but are not for use in fluid-handling or pressure-rated systems. These tubes maintain their corrosion resistance up to 1500° F.

Brushed #4—Also known as a satin finish, these rods have fine grain lines running in one direction. This finish is similar to a #3 finish, but the grain lines are finer and more uniform. It's often used in architectural, food-processing, and sanitary applications.

Certificates with a traceable lot number are available for these products. Download certificates from ORDER HISTORY after your order ships.

	Outside		Inside
	Ht.	Wd.	Ht.	Wd.	Wall Thk. Tolerance	Appearance	Fabrication	Hardness	Specs. Met		1 ft. Long	3 ft. Long	6 ft. Long
Square Profile







				0.12" Thick Wall (11 ga.)

				3/4"	3/4"	0.51"	0.51"	-0.012" to 0.012"	Brushed #4	Welded	Rockwell B95 (Medium)	ASTM A554	9534N1	000000	000000	0000000


				1"	1"	0.76"	0.76"	-0.012" to 0.012"	Brushed #4	Welded	Rockwell B95 (Medium)	ASTM A554	9534N2	00000	000000	000000
				1 1/2"	1 1/2"	1.26"	1.26"	-0.012" to 0.012"	Brushed #4	Welded	Rockwell B95 (Medium)	ASTM A554	9534N3	00000	000000	000000
				2"	2"	1.76"	1.76"	-0.012" to 0.012"	Brushed #4	Welded	Rockwell B95 (Medium)	ASTM A554	9534N5	00000	000000	000000




						1/4" Thick Wall

						2"	2"	1 1/2"	1 1/2"	-0.025" to 0.025"	Brushed #4	Welded	Rockwell B95 (Medium)	ASTM A554	9534N4	000000	000000	000000


						3"	3"	2 1/2"	2 1/2"	-0.025" to 0.025"	Brushed #4	Welded	Rockwell B95 (Medium)	ASTM A554	9534N6	000000	000000	000000
						4"	4"	3 1/2"	3 1/2"	-0.025" to 0.025"	Brushed #4	Welded	Rockwell B95 (Medium)	ASTM A554	9534N7	000000	000000	000000

Polished Multipurpose 304 Stainless Steel Rectangular Tubes

Polished to a brushed finish on the outside, these tubes are often used to create decorative enclosures and industrial workstations that hold up in corrosive environments. They have flat sides, which make them easy to mount. They meet ASTM A554 specifications for use in structural applications but are not for use in fluid-handling or pressure-rated systems. These tubes maintain their corrosion resistance up to 1500° F.

Rectangular Profile—Best for beams and other long spans. This shape saves space but is strongest when the load only comes from one direction.

Certificates with a traceable lot number are available for these products. Download certificates from ORDER HISTORY after your order ships.

	Outside		Inside
	Ht.	Wd.	Ht.	Wd.	Wall Thk. Tolerance	Appearance	Fabrication	Hardness	Specs. Met		1 ft. Long	3 ft. Long	6 ft. Long
Square Profile







				0.048" Thick Wall (18 ga.)

				3/4"	3/4"	0.654"	0.654"	-0.0048" to 0.0048"	Brushed #4	Welded	Rockwell B90 (Medium)	ASTM A554	89825K203	000000	000000	000000


				1"	1"	0.904"	0.904"	-0.0048" to 0.0048"	Brushed #4	Welded	Rockwell B90 (Medium)	ASTM A554	89825K212	00000	00000	00000




						0.065" Thick Wall (16 ga.)

						1/2"	1/2"	0.37"	0.37"	-0.007" to 0.007"	Brushed #4	Welded	Rockwell B90 (Medium)	ASTM A554	89825K189	00000	00000	00000


						3/4"	3/4"	0.62"	0.62"	-0.007" to 0.007"	Brushed #4	Welded	Rockwell B90 (Medium)	ASTM A554	89825K198	00000	00000	00000
						1"	1"	0.87"	0.87"	-0.007" to 0.007"	Brushed #4	Welded	Rockwell B90 (Medium)	ASTM A554	89825K136	00000	00000	00000
						1 1/4"	1 1/4"	1.12"	1.12"	-0.007" to 0.007"	Brushed #4	Welded	Rockwell B90 (Medium)	ASTM A554	89825K281	00000	00000	000000
						1 1/2"	1 1/2"	1.37"	1.37"	-0.007" to 0.007"	Brushed #4	Welded	Rockwell B90 (Medium)	ASTM A554	89825K145	00000	00000	000000
						2"	2"	1.87"	1.87"	-0.007" to 0.007"	Brushed #4	Welded	Rockwell B90 (Medium)	ASTM A554	89825K289	00000	00000	000000




								0.12" Thick Wall (11 ga.)

								3/4"	3/4"	0.51"	0.51"	-0.012" to 0.012"	Brushed #4	Welded	Rockwell B90 (Medium)	ASTM A554	89825K194	00000	00000	000000


								1"	1"	0.76"	0.76"	-0.012" to 0.012"	Brushed #4	Welded	Rockwell B90 (Medium)	ASTM A554	89825K207	00000	00000	000000
								1 1/4"	1 1/4"	1.01"	1.01"	-0.012" to 0.012"	Brushed #4	Welded	Rockwell B90 (Medium)	ASTM A554	89825K216	00000	00000	000000
								1 1/2"	1 1/2"	1.26"	1.26"	-0.012" to 0.012"	Brushed #4	Welded	Rockwell B90 (Medium)	ASTM A554	89825K141	00000	000000	000000
								2"	2"	1.76"	1.76"	-0.012" to 0.012"	Brushed #4	Welded	Rockwell B90 (Medium)	ASTM A554	89825K149	00000	000000	000000
								2 1/2"	2 1/2"	2.26"	2.26"	-0.012" to 0.012"	Brushed #4	Welded	Rockwell B90 (Medium)	ASTM A554	89825K298	00000	000000	000000
								3"	3"	2.76"	2.76"	-0.012" to 0.012"	Brushed #4	Welded	Rockwell B90 (Medium)	ASTM A554	89825K307	000000	000000	000000
								4"	4"	3.76"	3.76"	-0.012" to 0.012"	Brushed #4	Welded	Rockwell B90 (Medium)	ASTM A554	89825K801	000000	000000	000000




										0.18" Thick Wall (7 ga.)

										2"	2"	1.64"	1.64"	-0.018" to 0.018"	Brushed #4	Welded	Rockwell B90 (Medium)	ASTM A554	89825K294	00000	000000	000000


										3"	3"	2.64"	2.64"	-0.018" to 0.018"	Brushed #4	Welded	Rockwell B90 (Medium)	ASTM A554	89825K501	000000	000000	000000
										4"	4"	3.64"	3.64"	-0.018" to 0.018"	Brushed #4	Welded	Rockwell B90 (Medium)	ASTM A554	89825K805	000000	000000	000000




												1/4" Thick Wall

												2"	2"	1.50"	1.50"	-0.025" to 0.025"	Brushed #4	Welded	Rockwell B90 (Medium)	ASTM A554	89825K285	000000	000000	000000


												3"	3"	2.50"	2.50"	-0.025" to 0.025"	Brushed #4	Welded	Rockwell B90 (Medium)	ASTM A554	89825K303	000000	000000	000000
4"												4"	3.50"	3.50"	-0.025" to 0.025"	Brushed #4	Welded	Rockwell B90 (Medium)	ASTM A554	89825K505	000000	000000	000000


Rectangular Profile







												0.065" Thick Wall (16 ga.)

												3/4"	1"	0.62"	0.87"	-0.007" to 0.007"	Brushed #4	Welded	Rockwell B90 (Medium)	ASTM A554	89825K154	00000	00000	000000




												0.12" Thick Wall (11 ga.)

												1"	1 1/2"	0.76"	1.26"	-0.012" to 0.012"	Brushed #4	Welded	Rockwell B90 (Medium)	ASTM A554	89825K158	00000	00000	000000


												1"	2"	0.76"	1.76"	-0.012" to 0.012"	Brushed #4	Welded	Rockwell B90 (Medium)	ASTM A554	89825K163	00000	00000	000000
												1 1/2"	3"	1.26"	2.76"	-0.012" to 0.012"	Brushed #4	Welded	Rockwell B90 (Medium)	ASTM A554	89825K167	00000	000000	000000
												2"	4"	1.76"	3.76"	-0.012" to 0.012"	Brushed #4	Welded	Rockwell B90 (Medium)	ASTM A554	89825K181	000000	000000	000000




						0.18" Thick Wall (7 ga.)

						2"	3"							1.64"	2.64"	-0.018" to 0.018"	Brushed #4	Welded	Rockwell B90 (Medium)	ASTM A554	89825K172	000000	000000	000000


						2"	4"							1.64"	3.64"	-0.018" to 0.018"	Brushed #4	Welded	Rockwell B90 (Medium)	ASTM A554	89825K185	000000	000000	000000




														1/4" Thick Wall

														2"	4"	1.50"	3.50"	-0.025" to 0.025"	Brushed #4	Welded	Rockwell B90 (Medium)	ASTM A554	89825K176	000000	000000	000000