ASME B36.19 Pipe Nipples and Pipe

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System of Measurement

Pipe Size

Pipe Schedule

Material

Threading

Length

Fitting Material

304/304L Stainless Steel

316 Stainless Steel

316/316L Stainless Steel

Fitting Type

Shape

Fitting Connection

Wall Thickness

For Fitting Schedule

Flange Material

304 Stainless Steel

304/304L Stainless Steel

316 Stainless Steel

316/316L Stainless Steel

Pipe Material

Construction

For Use With

Connects To

Gender

DFARS Specialty Metals

Exempt

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

RoHS

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Compliant with Exemptions

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REACH

Compliant

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Export Control Classification Number (ECCN)

246 Products

About Pipe and Fittings

Measure your pipe and fittings to identify their pipe size, thread size, schedule, and thread type. Then, find compatible components.

Fitting Type

Pipe

Pair with fittings to transfer water, air, and other materials

Threading

Unthreaded

Weld pipe and fittings together or join with sealant

223 products

Standard-Wall Stainless Steel Unthreaded Pipe Nipples and Pipe

Also known as Schedule 40, this pipe has a thicker wall than our thin-wall stainless steel unthreaded pipe. Weld it to fittings and additional lengths of pipe. Welded connections are stronger than threaded connections and less likely to leak.

Pipe—Unthreaded

304/304L Stainless Steel—Pipe holds up in humid, damp, and washdown environments but will corrode if exposed to salt water or chemicals.

316/316L Stainless Steel—Pipe is the most corrosion resistant. It stands up to wet environments, just like 304 stainless steel pipe, but unlike 304 stainless steel, it will not corrode from salt water, chlorine solutions, and chemicals.

Welded—Pipe has a weld bead on the inside.

				304/304L Stainless Steel		316/316L Stainless Steel
	Lg., ft.	Construction	Pipe Schedule		Each		Each
Butt Weld/Socket Connect/Weld Socket Male







				1/8 Pipe Size

				1	Welded	40	44635K221	000000	44635K711	000000


				3	Welded	40	44635K222	00000	44635K712	00000
				6	Welded	40	44635K422	00000	44635K622	00000




						1/4 Pipe Size

						1	Welded	40	44635K231	00000	44635K721	00000


						3	Welded	40	44635K232	00000	44635K722	00000
						6	Welded	40	44635K424	00000	44635K624	00000




								3/8 Pipe Size

								1	Welded	40	44635K241	00000	44635K731	00000


								3	Welded	40	44635K242	00000	44635K732	00000
								6	Welded	40	44635K426	00000	44635K626	00000




										1/2 Pipe Size

										1	Welded	40	44635K251	00000	44635K741	00000


										3	Welded	40	44635K252	00000	44635K742	00000
										6	Welded	40	44635K428	00000	44635K628	00000




												3/4 Pipe Size

												1	Welded	40	44635K261	00000	44635K751	00000


												3	Welded	40	44635K262	00000	44635K752	00000
												6	Welded	40	44635K432	00000	44635K632	000000




														1 Pipe Size

1														Welded	40	44635K271	00000	44635K761	00000


3	Welded													40	44635K272	00000	44635K762	000000
6	Welded													40	44635K434	000000	44635K634	000000




		1 1/4 Pipe Size

		1	Welded											40	44635K281	00000	44635K771	00000


		3	Welded											40	44635K282	00000	44635K772	000000
		6	Welded											40	44635K436	000000	44635K636	000000




				1 1/2 Pipe Size

				1	Welded									40	44635K291	00000	44635K781	00000


				3	Welded									40	44635K292	000000	44635K782	000000
				6	Welded									40	44635K438	000000	44635K638	000000




						2 Pipe Size

						1	Welded							40	44635K311	00000	44635K791	000000


						3	Welded							40	44635K312	000000	44635K792	000000
						6	Welded							40	44635K442	000000	44635K642	000000




								2 1/2 Pipe Size

								1	Welded					40	44635K321	00000	44635K811	000000


								3	Welded					40	44635K322	000000	44635K812	000000
								6	Welded					40	44635K445	000000	44635K645	000000




										3 Pipe Size

										1	Welded			40	44635K331	000000	44635K821	000000


										3	Welded			40	44635K332	000000	44635K822	000000
										6	Welded			40	44635K443	000000	44635K643	000000




												4 Pipe Size

												1	Welded	40	44635K341	000000	44635K831	000000


												3	Welded	40	44635K342	000000	44635K832	000000
												6	Welded	40	44635K444	000000	44635K644	000000




												6 Pipe Size

												1	Welded	40	44635K351	000000	44635K841	000000


												3	Welded	40	44635K352	000000	44635K842	000000
												6	Welded	40	44635K446	000000	44635K646	000000




												8 Pipe Size

												1	Welded	40	44635K111	000000	44635K121	000000


												3	Welded	40	44635K112	000000	44635K122	000000
												6	Welded	40	44635K113	00000000	44635K123	00000000

Thin-Wall Stainless Steel Unthreaded Pipe Nipples and Pipe

Also known as Schedule 10, this pipe is thin and lightweight. Weld it to fittings and additional lengths of pipe. Welded connections are stronger than threaded connections and less likely to leak.

Pipe—Unthreaded

304/304L Stainless Steel—Pipe holds up in humid, damp, and washdown environments but will corrode if exposed to salt water or chemicals.

Welded—Pipe has a weld bead on the inside.

				304/304L Stainless Steel		316/316L Stainless Steel
	Lg.	Construction	Pipe Schedule		Each		Each
Butt Weld/Socket Connect/Weld Socket Male







				1/2 Pipe Size

				2"	Welded	10	4347K313	00000	———	0


				4"	Welded	10	4347K323	0000	———	0
				6"	Welded	10	4347K333	0000	———	0
				8"	Welded	10	4347K343	00000	———	0
				1 ft.	Welded	10	4347K311	00000	4378K511	000000
				3 ft.	Welded	10	4347K312	00000	4378K512	00000
				6 ft.	Welded	10	4347K54	00000	4378K74	00000




						3/4 Pipe Size

						2"	Welded	10	4347K353	0000	———	0


						4"	Welded	10	4347K363	0000	———	0
						6"	Welded	10	4347K373	00000	———	0
						8"	Welded	10	4347K383	00000	———	0
						1 ft.	Welded	10	4347K321	00000	4378K521	00000
						3 ft.	Welded	10	4347K322	00000	4378K522	00000
						6 ft.	Welded	10	4347K55	00000	4378K75	00000




								1 Pipe Size

								2"	Welded	10	4347K393	0000	4378K11	0000


								4"	Welded	10	4347K314	00000	4378K12	00000
								6"	Welded	10	4347K324	00000	4378K13	00000
								8"	Welded	10	4347K334	00000	4378K14	00000
								1 ft.	Welded	10	4347K331	00000	4378K531	00000
								3 ft.	Welded	10	4347K332	00000	4378K532	00000
								6 ft.	Welded	10	4347K56	00000	4378K76	000000




										1 1/4 Pipe Size

										2"	Welded	10	4347K344	0000	———	0


										4"	Welded	10	4347K354	00000	———	0
										6"	Welded	10	4347K364	00000	———	0
										8"	Welded	10	4347K374	00000	———	0
										1 ft.	Welded	10	4347K341	00000	4378K541	00000
										3 ft.	Welded	10	4347K342	00000	4378K542	00000
										6 ft.	Welded	10	4347K57	000000	4378K77	000000




										1 1/2 Pipe Size

		2"								Welded	10	4347K384	0000	4378K15	00000


		4"	Welded							10	4347K394	00000	4378K16	00000
		6"	Welded							10	4347K315	00000	4378K17	00000
		8"	Welded							10	4347K325	00000	4378K18	00000
		1 ft.	Welded							10	4347K351	00000	4378K551	00000
		3 ft.	Welded							10	4347K352	00000	4378K552	000000
		6 ft.	Welded							10	4347K58	000000	4378K78	000000




										2 Pipe Size

				4"						Welded	10	4347K335	00000	4378K19	00000


				6"	Welded					10	4347K345	00000	4378K21	00000
				8"	Welded					10	4347K355	00000	4378K22	00000
				1 ft.	Welded					10	4347K361	00000	4378K561	00000
				3 ft.	Welded					10	4347K362	00000	4378K562	000000
				6 ft.	Welded					10	4347K59	000000	4378K79	000000




										2 1/2 Pipe Size

										4"	Welded	10	4347K365	00000	———	0


						6"	Welded			10	4347K375	00000	———	0
						8"	Welded			10	4347K385	00000	———	0
						1 ft.	Welded			10	4347K371	00000	4378K571	00000
						3 ft.	Welded			10	4347K372	000000	4378K572	000000
						6 ft.	Welded			10	4347K61	000000	4378K81	000000




										3 Pipe Size

										4"	Welded	10	4347K395	00000	4378K23	00000


								6"	Welded	10	4347K316	00000	4378K24	00000
								8"	Welded	10	4347K326	00000	4378K25	00000
								1 ft.	Welded	10	4347K381	00000	4378K581	00000
								3 ft.	Welded	10	4347K382	000000	4378K582	000000
								6 ft.	Welded	10	4347K62	000000	4378K82	000000




										4 Pipe Size

										4"	Welded	10	4347K336	00000	4378K26	00000


6"										Welded	10	4347K346	00000	4378K27	00000
8"	Welded									10	4347K356	00000	4378K28	00000
1 ft.	Welded									10	4347K391	00000	4378K591	00000
3 ft.	Welded									10	4347K392	000000	4378K592	000000
6 ft.	Welded									10	4347K63	000000	4378K83	000000




										6 Pipe Size

										4"	Welded	10	4347K366	00000	4378K29	00000


										6"	Welded	10	4347K376	00000	4378K31	00000
		8"								Welded	10	4347K386	00000	4378K32	000000
		1 ft.	Welded							10	4347K411	00000	4378K611	000000
		3 ft.	Welded							10	4347K412	000000	4378K612	000000
		6 ft.	Welded							10	4347K65	000000	4378K85	000000




										8 Pipe Size

										4"	Welded	10	4347K396	00000	———	0


										6"	Welded	10	4347K317	00000	———	0
				8"						Welded	10	4347K327	00000	———	0
				1 ft.	Welded					10	4347K421	00000	4378K621	000000
				3 ft.	Welded					10	4347K422	000000	4378K622	000000
				6 ft.	Welded					10	4347K423	000000	4378K623	000000




										10 Pipe Size

										4"	Welded	10	4347K337	00000	———	0


										6"	Welded	10	4347K347	00000	———	0
						8"				Welded	10	4347K357	00000	———	0
						1 ft.	Welded			10	4347K431	000000	4378K631	000000
						3 ft.	Welded			10	4347K432	000000	4378K632	000000
						6 ft.	Welded			10	4347K433	000000	4378K633	000000




										12 Pipe Size

										1 ft.	Welded	10	4347K441	000000	4378K641	000000


										3 ft.	Welded	10	4347K442	000000	4378K642	000000
								6 ft.		Welded	10	4347K443	000000	4378K643	000000

Low-Pressure Stainless Steel Compression Pipe Fittings

Create quick, liquid-tight connections in medium-pressure applications with these connectors. They join rigid pipe of the same or different materials. Connectors have a gasket that permits moderate movement and misalignment of pipe ends.

Compression connectors slide onto pipe and hand tighten with the end nuts. You may need to tighten over time. These connectors have a Buna-N rubber gasket that resists oil, as well as mild chemicals and water. Replace the gasket when it’s worn out, or swap it out for a gasket with different properties. Silicone rubber gaskets resist temperature changes better than Buna-N rubber gaskets, and also keep their flexibility. Viton® fluoroelastomer rubber gaskets resist extreme heat, as well as chemicals, fuel, and oil.

Straight Connectors with Gasket

Compression

304 Stainless Steel—Fittings hold up in humid, damp, and washdown environments but will corrode if exposed to salt water or chemicals.

				304 Stainless Steel
	For Pipe Size	For Pipe OD	Gasket Material	Max. Pressure @ Temp.		Each
Compression



		1/2	0.84"	Buna-N	200 psi @ 72° F	4486K111	0000000


		3/4	1.05"	Buna-N	200 psi @ 72° F	4486K121	000000
		1	1.315"	Buna-N	200 psi @ 72° F	4486K131	000000
		1 1/4	1.66"	Buna-N	200 psi @ 72° F	4486K141	000000
		1 1/2	1.9"	Buna-N	200 psi @ 72° F	4486K151	000000
		2	2 3/8"	Buna-N	200 psi @ 72° F	4486K161	000000

Replacement Gaskets

Image of Product. Front orientation. Pipe Gaskets.

	Temp. Range, ° F	Gasket Clarity	Gasket Color		Each
Buna-N Gasket



	1/2	-60 to 260	Opaque	Black	9187K211	00000


	3/4	-60 to 260	Opaque	Black	9187K212	0000
	1	-60 to 260	Opaque	Black	9187K213	00000
	1 1/4	-60 to 260	Opaque	Black	9187K214	00000
	1 1/2	-60 to 260	Opaque	Black	9187K215	00000
	2	-60 to 260	Opaque	Black	9187K216	00000


	Silicone Rubber Gasket



			1/2	-180 to 400	Opaque	Orange	9187K217	0000


			3/4	-180 to 400	Opaque	Orange	9187K218	00000
			1	-180 to 400	Opaque	Orange	9187K219	00000
			1 1/4	-180 to 400	Opaque	Orange	9187K221	00000
			1 1/2	-180 to 400	Opaque	Orange	9187K222	00000
			2	-180 to 400	Opaque	Orange	9187K223	00000


			Viton® Fluoroelastomer Gasket



					3/4	-40 to 500	Opaque	Brown	9187K224	00000


					1	-40 to 500	Opaque	Brown	9187K225	00000
					1 1/4	-40 to 500	Opaque	Brown	9187K226	00000
					1 1/2	-40 to 500	Opaque	Brown	9187K227	00000
					2	-40 to 500	Opaque	Brown	9187K228	00000