Filter by
System of Measurement
Flanged Connection Surface
Flange OD
Flange Material
Fitting Material
Shape
For Flange Class
Bolt Circle Diameter
For Use With
ID
Specifications Met
For Fitting Schedule
DFARS Specialty Metals
RoHS
About Pipe and Fittings
%20--%3e%3csvg%20version='1.1'%20id='Layer_1'%20xmlns='http://www.w3.org/2000/svg'%20xmlns:xlink='http://www.w3.org/1999/xlink'%20x='0px'%20y='0px'%20viewBox='0%200%20400%20400'%20style='enable-background:new%200%200%20400%20400;'%20xml:space='preserve'%3e%3cstyle%20type='text/css'%3e%20.st0{fill:%231A70A0;}%20.st1{opacity:0.5;}%20%3c/style%3e%3cg%3e%3cg%3e%3cpath%20class='st0'%20d='M200,56.9c38.35,0,74.4,14.93,101.51,42.05c27.11,27.11,42.05,63.17,42.05,101.51s-14.93,74.4-42.05,101.51%20S238.35,344.02,200,344.02s-74.4-14.93-101.51-42.05c-27.11-27.11-42.05-63.17-42.05-101.51s14.93-74.4,42.05-101.51%20S161.65,56.9,200,56.9%20M200,12.9C96.41,12.9,12.44,96.88,12.44,200.46c0,103.59,83.97,187.56,187.56,187.56%20c103.59,0,187.56-83.97,187.56-187.56C387.56,96.88,303.59,12.9,200,12.9L200,12.9z'/%3e%3c/g%3e%3cg%3e%3cg%20class='st1'%3e%3cpath%20class='st0'%20d='M235.49,152.24h16.15l-27.46,111.87c-1.94,7.8-2.91,12.5-2.91,14.1c0,1.82,0.58,3.29,1.73,4.41%20c1.16,1.12,2.69,1.68,4.61,1.68c5.23,0,11.78-3.85,19.63-11.55l17.22,21.34c-16.95,17.33-34.87,26-53.78,26%20c-8.37,0-15.45-1.47-21.23-4.41c-5.79-2.94-10.44-7.25-13.95-12.92c-3.51-5.67-5.27-11.18-5.27-16.53c0-1.93,0.35-5.24,1.05-9.94%20c1-6.94,2.05-12.54,3.15-16.82l15.22-62.15h-32.69l7.65-30.97C190.89,163.58,214.53,158.88,235.49,152.24z%20M230.44,80.84%20c8.24,0,14.66,2.62,19.26,7.86c4.6,5.24,6.9,11.55,6.9,18.94c0,5.46-1.42,10.7-4.25,15.73c-2.83,5.03-6.88,9.07-12.12,12.12%20c-5.24,3.05-10.33,4.57-15.24,4.57c-4.6,0-9.17-1.23-13.72-3.69c-4.55-2.46-8.02-5.78-10.43-9.95%20c-2.41-4.17-3.61-8.67-3.61-13.48c0-5.35,1.52-10.64,4.57-15.89c3.05-5.24,7.03-9.25,11.96-12.04%20C218.68,82.23,224.24,80.84,230.44,80.84z'/%3e%3c/g%3e%3cg%3e%3cpath%20class='st0'%20d='M214.08,152.24h16.15l-27.46,111.87c-1.94,7.8-2.91,12.5-2.91,14.1c0,1.82,0.58,3.29,1.73,4.41%20c1.16,1.12,2.69,1.68,4.61,1.68c5.23,0,11.78-3.85,19.63-11.55l17.22,21.34c-16.95,17.33-34.87,26-53.78,26%20c-8.37,0-15.45-1.47-21.23-4.41c-5.79-2.94-10.44-7.25-13.95-12.92c-3.51-5.67-5.27-11.18-5.27-16.53c0-1.93,0.35-5.24,1.05-9.94%20c1-6.94,2.05-12.54,3.15-16.82l15.22-62.15h-32.69l7.65-30.97C169.48,163.58,193.11,158.88,214.08,152.24z%20M209.03,80.84%20c8.24,0,14.66,2.62,19.26,7.86c4.6,5.24,6.9,11.55,6.9,18.94c0,5.46-1.42,10.7-4.25,15.73c-2.83,5.03-6.88,9.07-12.12,12.12%20c-5.24,3.05-10.33,4.57-15.24,4.57c-4.6,0-9.17-1.23-13.72-3.69c-4.55-2.46-8.02-5.78-10.43-9.95%20c-2.41-4.17-3.61-8.67-3.61-13.48c0-5.35,1.52-10.64,4.57-15.89c3.05-5.24,7.03-9.25,11.96-12.04%20C197.26,82.23,202.83,80.84,209.03,80.84z'/%3e%3c/g%3e%3c/g%3e%3c/g%3e%3c/svg%3e){kind=small}
Measure your pipe and fittings to identify their pipe size, thread size, schedule, and thread type. Then, find compatible components.
Low-Pressure Stainless Steel Unthreaded Pipe Flanges
Forged Flanges
 |
Stub End with Straight Adapter (Front) |
Forged flanges have better strength than cast flanges.
Stub-End Fitting Connection—Stub-end flanges are also known as lap-joint flanges. Use them with a stub-end straight adapter (not included). The stub-end straight adapter slides into the flange and welds to pipe (not the flange). Since the flange isn’t welded to the pipe, it can be disconnected easily for frequent cleaning and inspecting.
304/304L Stainless Steel—Flanges hold up in humid, damp, and washdown environments but will corrode if exposed to salt water or chemicals.
316/316L Stainless Steel—Flanges are the most corrosion resistant. They stand up to wet environments, just like 304 stainless steel flanges, but unlike 304 stainless steel, they will not corrode from salt water, chlorine solutions, and chemicals.
Pipe Size | Bolt Hole | 304/304L Stainless Steel | 316/316L Stainless Steel | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
(A) | (B) | Flanged Connection Surface (B) | Flange OD | For Bolt Dia. | Dia. | No. Of | Bolt Circle Dia. | Pressure Class | Max. Pressure @ Temp. | Each | Each | ||||
Stub End | |||||||||||||||
| 1/2 | 1/2 | Flat | 3 1/2" | 1/2" | 5/8" | 4 | 2 3/8" | 150 | 230 psi @ 72° F | 44685K311 | 000000 | 44695K212 | 000000 | ||
| 3/4 | 3/4 | Flat | 3 7/8" | 1/2" | 5/8" | 4 | 2 3/4" | 150 | 230 psi @ 72° F | 44685K312 | 00000 | 44695K213 | 00000 | ||
| 1 | 1 | Flat | 4 1/4" | 1/2" | 5/8" | 4 | 3 1/8" | 150 | 230 psi @ 72° F | 44685K313 | 00000 | 44695K214 | 00000 | ||
| 1 1/4 | 1 1/4 | Flat | 4 5/8" | 1/2" | 5/8" | 4 | 3 1/2" | 150 | 230 psi @ 72° F | 44685K314 | 00000 | 44695K215 | 00000 | ||
| 1 1/2 | 1 1/2 | Flat | 5" | 1/2" | 5/8" | 4 | 3 7/8" | 150 | 230 psi @ 72° F | 44685K315 | 00000 | 44695K216 | 00000 | ||
| 2 | 2 | Flat | 6" | 5/8" | 3/4" | 4 | 4 3/4" | 150 | 230 psi @ 72° F | 44685K316 | 00000 | 44695K217 | 00000 | ||
| 2 1/2 | 2 1/2 | Flat | 7" | 5/8" | 3/4" | 4 | 5 1/2" | 150 | 230 psi @ 72° F | 44685K317 | 000000 | 44695K218 | 000000 | ||
| 3 | 3 | Flat | 7 1/2" | 5/8" | 3/4" | 4 | 6" | 150 | 230 psi @ 72° F | 44685K318 | 000000 | 44695K219 | 000000 | ||
| 4 | 4 | Flat | 9" | 5/8" | 3/4" | 8 | 7 1/2" | 150 | 230 psi @ 72° F | 44685K319 | 000000 | 44695K221 | 000000 | ||
| 6 | 6 | Flat | 11" | 3/4" | 7/8" | 8 | 9 1/2" | 150 | 230 psi @ 72° F | 44685K161 | 000000 | 44695K151 | 000000 | ||
| 8 | 8 | Flat | 13 1/2" | 3/4" | 7/8" | 8 | 11 3/4" | 150 | 230 psi @ 72° F | 44685K176 | 000000 | 44695K166 | 000000 | ||
| 10 | 10 | Flat | 16" | 7/8" | 1" | 12 | 14 1/4" | 150 | 230 psi @ 72° F | 44685K326 | 000000 | ——— | 0 | ||
| 12 | 12 | Flat | 19" | 7/8" | 1" | 12 | 17" | 150 | 230 psi @ 72° F | 44685K327 | 000000 | 44695K256 | 000000 | ||
Stub-End Straight Adapters
 |
Straight Adapter |
Stub-end straight adapters are used with flanges. Slide a flange onto the stub end and weld the stub end to pipe (not the flange). Since the flange isn’t welded to the pipe, it can be disconnected easily, which creates an access point for frequent cleaning and inspecting.
304/304L Stainless Steel | 316/316L Stainless Steel | ||||||||
|---|---|---|---|---|---|---|---|---|---|
Pipe Size | Wall Thk. | Flange OD | Construction | Pipe Schedule | Each | Each | |||
| 1/2 | 0.083" | 1 3/8" | Welded | 10 | 45735K291 | 000000 | 43645K391 | 000000 | |
| 1/2 | 0.109" | 1 3/8" | Welded | 40 | 45605K651 | 00000 | 45555K651 | 00000 | |
| 3/4 | 0.083" | 1 11/16" | Welded | 10 | 45735K292 | 00000 | 43645K392 | 00000 | |
| 3/4 | 0.113" | 1 11/16" | Welded | 40 | 45605K652 | 00000 | 45555K652 | 00000 | |
| 1 | 0.109" | 2" | Welded | 10 | 45735K293 | 00000 | 43645K393 | 00000 | |
| 1 | 0.133" | 2" | Welded | 40 | 45605K653 | 00000 | 45555K653 | 00000 | |
| 1 1/4 | 0.109" | 2 1/2" | Welded | 10 | 45735K297 | 00000 | 43645K152 | 00000 | |
| 1 1/4 | 0.14" | 2 1/2" | Welded | 40 | 45605K654 | 00000 | 45555K654 | 00000 | |
| 1 1/2 | 0.109" | 2 7/8" | Welded | 10 | 45735K295 | 00000 | 43645K395 | 00000 | |
| 1 1/2 | 0.145" | 2 7/8" | Welded | 40 | 45605K655 | 00000 | 45555K655 | 00000 | |
| 2 | 0.109" | 3 5/8" | Welded | 10 | 45735K296 | 00000 | 43645K396 | 00000 | |
| 2 | 0.154" | 3 5/8" | Welded | 40 | 45605K656 | 00000 | 45555K656 | 00000 | |
| 2 1/2 | 0.12" | 4 1/8" | Welded | 10 | 45735K311 | 00000 | 43645K153 | 00000 | |
| 2 1/2 | 0.203" | 4 1/8" | Welded | 40 | 45605K657 | 00000 | 45555K657 | 00000 | |
| 3 | 0.12" | 5" | Welded | 10 | 45735K298 | 00000 | 43645K398 | 00000 | |
| 3 | 0.216" | 5" | Welded | 40 | 45605K661 | 00000 | 45555K661 | 00000 | |
| 4 | 0.12" | 6 3/16" | Welded | 10 | 45735K299 | 00000 | 43645K399 | 00000 | |
| 4 | 0.237" | 6 3/16" | Welded | 40 | 45605K663 | 00000 | 45555K663 | 00000 | |
| 6 | 0.134" | 8 1/2" | Welded | 10 | 45735K312 | 000000 | 43645K154 | 000000 | |
| 6 | 0.28" | 8 1/2" | Welded | 40 | 45605K665 | 000000 | 45555K665 | 000000 | |
| 8 | 0.148" | 10 5/8" | Welded | 10 | 45735K116 | 000000 | 43645K155 | 000000 | |
| 8 | 0.322" | 10 5/8" | Welded | 40 | 45605K531 | 000000 | 45555K615 | 000000 | |
| 10 | 0.134" | 12 3/4" | Welded | 10 | 45735K622 | 000000 | ——— | 0 | |
| 12 | — | 15" | Welded | 10 | ——— | 0 | 43645K462 | 000000 | |
| 12 | 0.156" | 15" | Welded | 10 | 45735K623 | 000000 | ——— | 0 | |
Standard-Wall Butt-Weld Stainless Steel Unthreaded Pipe Stub Ends
 | |
Straight Pipe Stub End with Pipe Flange | Straight Adapter |
Also known as Schedule 40 pipe stub ends, these have thicker walls than our thin-wall stainless steel unthreaded butt-weld pipe stub ends. They have beveled ends that, when flush to pipe, create a trough for a strong weld that permits maximum flow.
Pipe stub ends are used with flanges. Slide a flange onto the stub end and weld the stub end to pipe (not the flange). Since the flange isn’t welded to the pipe, it can be disconnected easily, which creates an access point for frequent cleaning and inspecting.
304/304L Stainless Steel—304/304L stainless steel pipe stub ends have very good corrosion resistance.
316/316L Stainless Steel—316/316L stainless steel pipe stub ends have excellent corrosion resistance.
Pipe Stub Ends | Flanges | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
For Pipe | For Flange | ||||||||||||||
Pipe Size | Wall Thk. | Flange OD | Construction | For Use With | Specs. Met | Schedule | Material | Class | Material | Each | Each | ||||
Straight Pipe Stub Ends, Butt Weld × Flanged | |||||||||||||||
304/304L Stainless Steel | |||||||||||||||
| 1/2 | 0.109" | 1 3/8" | Welded | Air, Natural Gas, Oil, Water | ASME B16.9, ASTM A403, MSS SP-43 | 40 | 304 Stainless Steel, 304/304L Stainless Steel | 150 | 304 Stainless Steel, 304/304L Stainless Steel | 45605K651 | 000000 | 44685K311 | 000000 | ||
| 3/4 | 0.113" | 1 11/16" | Welded | Air, Natural Gas, Oil, Water | ASME B16.9, ASTM A403, MSS SP-43 | 40 | 304 Stainless Steel, 304/304L Stainless Steel | 150 | 304 Stainless Steel, 304/304L Stainless Steel | 45605K652 | 00000 | 44685K312 | 00000 | ||
| 1 | 0.133" | 2" | Welded | Air, Natural Gas, Oil, Water | ASME B16.9, ASTM A403, MSS SP-43 | 40 | 304 Stainless Steel, 304/304L Stainless Steel | 150 | 304 Stainless Steel, 304/304L Stainless Steel | 45605K653 | 00000 | 44685K313 | 00000 | ||
| 1 1/4 | 0.14" | 2 1/2" | Welded | Air, Natural Gas, Oil, Water | ASME B16.9, ASTM A403, MSS SP-43 | 40 | 304 Stainless Steel, 304/304L Stainless Steel | 150 | 304 Stainless Steel, 304/304L Stainless Steel | 45605K654 | 00000 | 44685K314 | 00000 | ||
| 1 1/2 | 0.145" | 2 7/8" | Welded | Air, Natural Gas, Oil, Water | ASME B16.9, ASTM A403, MSS SP-43 | 40 | 304 Stainless Steel, 304/304L Stainless Steel | 150 | 304 Stainless Steel, 304/304L Stainless Steel | 45605K655 | 00000 | 44685K315 | 00000 | ||
| 2 | 0.154" | 3 5/8" | Welded | Air, Natural Gas, Oil, Water | ASME B16.9, ASTM A403, MSS SP-43 | 40 | 304 Stainless Steel, 304/304L Stainless Steel | 150 | 304 Stainless Steel, 304/304L Stainless Steel | 45605K656 | 00000 | 44685K316 | 00000 | ||
| 2 1/2 | 0.203" | 4 1/8" | Welded | Air, Natural Gas, Oil, Water | ASME B16.9, ASTM A403, MSS SP-43 | 40 | 304 Stainless Steel, 304/304L Stainless Steel | 150 | 304 Stainless Steel, 304/304L Stainless Steel | 45605K657 | 00000 | 44685K317 | 000000 | ||
| 3 | 0.216" | 5" | Welded | Air, Natural Gas, Oil, Water | ASME B16.9, ASTM A403, MSS SP-43 | 40 | 304 Stainless Steel, 304/304L Stainless Steel | 150 | 304 Stainless Steel, 304/304L Stainless Steel | 45605K661 | 00000 | 44685K318 | 000000 | ||
| 4 | 0.237" | 6 3/16" | Welded | Air, Natural Gas, Oil, Water | ASME B16.9, ASTM A403, MSS SP-43 | 40 | 304 Stainless Steel, 304/304L Stainless Steel | 150 | 304 Stainless Steel, 304/304L Stainless Steel | 45605K663 | 00000 | 44685K319 | 000000 | ||
| 6 | 0.28" | 8 1/2" | Welded | Air, Natural Gas, Oil, Water | ASME B16.9, ASTM A403, MSS SP-43 | 40 | 304 Stainless Steel, 304/304L Stainless Steel | 150 | 304 Stainless Steel, 304/304L Stainless Steel | 45605K665 | 000000 | 44685K161 | 000000 | ||
| 8 | 0.322" | 10 5/8" | Welded | Air, Natural Gas, Oil, Water | ASME B16.9, ASTM A403, MSS SP-43 | 40 | 304 Stainless Steel, 304/304L Stainless Steel | 150 | 304 Stainless Steel, 304/304L Stainless Steel | 45605K531 | 000000 | 44685K176 | 000000 | ||
316/316L Stainless Steel | |||||||||||||||
| 1/2 | 0.109" | 1 3/8" | Welded | Air, Natural Gas, Oil, Water | ASME B16.9, ASTM A403, MSS SP-43 | 40 | 316 Stainless Steel, 316/316L Stainless Steel | 150 | 316 Stainless Steel, 316/316L Stainless Steel | 45555K651 | 00000 | 44695K212 | 00000 | ||
| 3/4 | 0.113" | 1 11/16" | Welded | Air, Natural Gas, Oil, Water | ASME B16.9, ASTM A403, MSS SP-43 | 40 | 316 Stainless Steel, 316/316L Stainless Steel | 150 | 316 Stainless Steel, 316/316L Stainless Steel | 45555K652 | 00000 | 44695K213 | 00000 | ||
| 1 | 0.133" | 2" | Welded | Air, Natural Gas, Oil, Water | ASME B16.9, ASTM A403, MSS SP-43 | 40 | 316 Stainless Steel, 316/316L Stainless Steel | 150 | 316 Stainless Steel, 316/316L Stainless Steel | 45555K653 | 00000 | 44695K214 | 00000 | ||
| 1 1/4 | 0.14" | 2 1/2" | Welded | Air, Natural Gas, Oil, Water | ASME B16.9, ASTM A403, MSS SP-43 | 40 | 316 Stainless Steel, 316/316L Stainless Steel | 150 | 316 Stainless Steel, 316/316L Stainless Steel | 45555K654 | 00000 | 44695K215 | 00000 | ||
| 1 1/2 | 0.145" | 2 7/8" | Welded | Air, Natural Gas, Oil, Water | ASME B16.9, ASTM A403, MSS SP-43 | 40 | 316 Stainless Steel, 316/316L Stainless Steel | 150 | 316 Stainless Steel, 316/316L Stainless Steel | 45555K655 | 00000 | 44695K216 | 00000 | ||
| 2 | 0.154" | 3 5/8" | Welded | Air, Natural Gas, Oil, Water | ASME B16.9, ASTM A403, MSS SP-43 | 40 | 316 Stainless Steel, 316/316L Stainless Steel | 150 | 316 Stainless Steel, 316/316L Stainless Steel | 45555K656 | 00000 | 44695K217 | 00000 | ||
| 2 1/2 | 0.203" | 4 1/8" | Welded | Air, Natural Gas, Oil, Water | ASME B16.9, ASTM A403, MSS SP-43 | 40 | 316 Stainless Steel, 316/316L Stainless Steel | 150 | 316 Stainless Steel, 316/316L Stainless Steel | 45555K657 | 00000 | 44695K218 | 000000 | ||
| 3 | 0.216" | 5" | Welded | Air, Natural Gas, Oil, Water | ASME B16.9, ASTM A403, MSS SP-43 | 40 | 316 Stainless Steel, 316/316L Stainless Steel | 150 | 316 Stainless Steel, 316/316L Stainless Steel | 45555K661 | 00000 | 44695K219 | 000000 | ||
| 4 | 0.237" | 6 3/16" | Welded | Air, Natural Gas, Oil, Water | ASME B16.9, ASTM A403, MSS SP-43 | 40 | 316 Stainless Steel, 316/316L Stainless Steel | 150 | 316 Stainless Steel, 316/316L Stainless Steel | 45555K663 | 00000 | 44695K221 | 000000 | ||
| 6 | 0.28" | 8 1/2" | Welded | Air, Natural Gas, Oil, Water | ASME B16.9, ASTM A403, MSS SP-43 | 40 | 316 Stainless Steel, 316/316L Stainless Steel | 150 | 316 Stainless Steel, 316/316L Stainless Steel | 45555K665 | 000000 | 44695K151 | 000000 | ||
| 8 | 0.322" | 10 5/8" | Welded | Air, Natural Gas, Oil, Water | ASME B16.9, ASTM A403, MSS SP-43 | 40 | 316 Stainless Steel, 316/316L Stainless Steel | 150 | 316 Stainless Steel, 316/316L Stainless Steel | 45555K615 | 000000 | 44695K166 | 000000 | ||
Thin-Wall Butt-Weld Stainless Steel Unthreaded Pipe Stub Ends
|  |
Straight Pipe Stub End with Pipe Flange | Straight Adapter |
Also known as Schedule 10 pipe stub ends, these are thin and lightweight. They have beveled ends that, when flush to pipe, create a trough for a strong weld that permits maximum flow.
Pipe stub ends are used with flanges. Slide a flange onto the stub end and weld the stub end to pipe (not the flange). Since the flange isn’t welded to the pipe, it can be disconnected easily, which creates an access point for frequent cleaning and inspecting.
304/304L Stainless Steel—304/304L stainless steel pipe stub ends have very good corrosion resistance.
316/316L Stainless Steel—316/316L stainless steel pipe stub ends have excellent corrosion resistance.
Pipe Stub Ends | Flanges | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
For Pipe | For Flange | ||||||||||||||
Pipe Size | Wall Thk. | Flange OD | Construction | For Use With | Specs. Met | Schedule | Material | Class | Material | Each | Each | ||||
Straight Pipe Stub Ends, Butt Weld × Flanged | |||||||||||||||
304/304L Stainless Steel | |||||||||||||||
| 1/2 | 0.083" | 1 3/8" | Welded | Air, Natural Gas, Oil, Water | ASME B16.9, ASTM A403, MSS SP-43 | 10 | 304 Stainless Steel, 304/304L Stainless Steel | 150 | 304 Stainless Steel, 304/304L Stainless Steel | 45735K291 | 000000 | 44685K311 | 000000 | ||
| 3/4 | 0.083" | 1 11/16" | Welded | Air, Natural Gas, Oil, Water | ASME B16.9, ASTM A403, MSS SP-43 | 10 | 304 Stainless Steel, 304/304L Stainless Steel | 150 | 304 Stainless Steel, 304/304L Stainless Steel | 45735K292 | 00000 | 44685K312 | 00000 | ||
| 1 | 0.109" | 2" | Welded | Air, Natural Gas, Oil, Water | ASME B16.9, ASTM A403, MSS SP-43 | 10 | 304 Stainless Steel, 304/304L Stainless Steel | 150 | 304 Stainless Steel, 304/304L Stainless Steel | 45735K293 | 00000 | 44685K313 | 00000 | ||
| 1 1/4 | 0.109" | 2 1/2" | Welded | Air, Natural Gas, Oil, Water | ASME B16.9, ASTM A403, MSS SP-43 | 10 | 304 Stainless Steel, 304/304L Stainless Steel | 150 | 304 Stainless Steel, 304/304L Stainless Steel | 45735K297 | 00000 | 44685K314 | 00000 | ||
| 1 1/2 | 0.109" | 2 7/8" | Welded | Air, Natural Gas, Oil, Water | ASME B16.9, ASTM A403, MSS SP-43 | 10 | 304 Stainless Steel, 304/304L Stainless Steel | 150 | 304 Stainless Steel, 304/304L Stainless Steel | 45735K295 | 00000 | 44685K315 | 00000 | ||
| 2 | 0.109" | 3 5/8" | Welded | Air, Natural Gas, Oil, Water | ASME B16.9, ASTM A403, MSS SP-43 | 10 | 304 Stainless Steel, 304/304L Stainless Steel | 150 | 304 Stainless Steel, 304/304L Stainless Steel | 45735K296 | 00000 | 44685K316 | 00000 | ||
| 2 1/2 | 0.12" | 4 1/8" | Welded | Air, Natural Gas, Oil, Water | ASME B16.9, ASTM A403, MSS SP-43 | 10 | 304 Stainless Steel, 304/304L Stainless Steel | 150 | 304 Stainless Steel, 304/304L Stainless Steel | 45735K311 | 00000 | 44685K317 | 000000 | ||
| 3 | 0.12" | 5" | Welded | Air, Natural Gas, Oil, Water | ASME B16.9, ASTM A403, MSS SP-43 | 10 | 304 Stainless Steel, 304/304L Stainless Steel | 150 | 304 Stainless Steel, 304/304L Stainless Steel | 45735K298 | 00000 | 44685K318 | 000000 | ||
| 4 | 0.12" | 6 3/16" | Welded | Air, Natural Gas, Oil, Water | ASME B16.9, ASTM A403, MSS SP-43 | 10 | 304 Stainless Steel, 304/304L Stainless Steel | 150 | 304 Stainless Steel, 304/304L Stainless Steel | 45735K299 | 00000 | 44685K319 | 000000 | ||
| 6 | 0.134" | 8 1/2" | Welded | Air, Natural Gas, Oil, Water | ASME B16.9, ASTM A403, MSS SP-43 | 10 | 304 Stainless Steel, 304/304L Stainless Steel | 150 | 304 Stainless Steel, 304/304L Stainless Steel | 45735K312 | 000000 | 44685K161 | 000000 | ||
| 8 | 0.148" | 10 5/8" | Welded | Air, Natural Gas, Oil, Water | ASME B16.9, ASTM A403, MSS SP-43 | 10 | 304 Stainless Steel, 304/304L Stainless Steel | 150 | 304 Stainless Steel, 304/304L Stainless Steel | 45735K116 | 000000 | 44685K176 | 000000 | ||
| 10 | 0.134" | 12 3/4" | Welded | Air, Natural Gas, Oil, Water | ASME B16.9, ASTM A403, MSS SP-43 | 10 | 304 Stainless Steel, 304/304L Stainless Steel | 150 | 304 Stainless Steel, 304/304L Stainless Steel | 45735K622 | 000000 | 44685K326 | 000000 | ||
| 12 | 0.156" | 15" | Welded | Air, Natural Gas, Oil, Water | ASME B16.9, ASTM A403, MSS SP-43 | 10 | 304 Stainless Steel, 304/304L Stainless Steel | 150 | 304 Stainless Steel, 304/304L Stainless Steel | 45735K623 | 000000 | 44685K327 | 000000 | ||
316/316L Stainless Steel | |||||||||||||||
| 1/2 | 0.083" | 1 3/8" | Welded | Air, Natural Gas, Oil, Water | ASME B16.9, ASTM A403, MSS SP-43 | 10 | 316 Stainless Steel, 316/316L Stainless Steel | 150 | 316 Stainless Steel, 316/316L Stainless Steel | 43645K391 | 00000 | 44695K212 | 00000 | ||
| 3/4 | 0.083" | 1 11/16" | Welded | Air, Natural Gas, Oil, Water | ASME B16.9, ASTM A403, MSS SP-43 | 10 | 316 Stainless Steel, 316/316L Stainless Steel | 150 | 316 Stainless Steel, 316/316L Stainless Steel | 43645K392 | 00000 | 44695K213 | 00000 | ||
| 1 | 0.109" | 2" | Welded | Air, Natural Gas, Oil, Water | ASME B16.9, ASTM A403, MSS SP-43 | 10 | 316 Stainless Steel, 316/316L Stainless Steel | 150 | 316 Stainless Steel, 316/316L Stainless Steel | 43645K393 | 00000 | 44695K214 | 00000 | ||
| 1 1/4 | 0.109" | 2 1/2" | Welded | Air, Natural Gas, Oil, Water | ASME B16.9, ASTM A403, MSS SP-43 | 10 | 316 Stainless Steel, 316/316L Stainless Steel | 150 | 316 Stainless Steel, 316/316L Stainless Steel | 43645K152 | 00000 | 44695K215 | 00000 | ||
| 1 1/2 | 0.109" | 2 7/8" | Welded | Air, Natural Gas, Oil, Water | ASME B16.9, ASTM A403, MSS SP-43 | 10 | 316 Stainless Steel, 316/316L Stainless Steel | 150 | 316 Stainless Steel, 316/316L Stainless Steel | 43645K395 | 00000 | 44695K216 | 00000 | ||
| 2 | 0.109" | 3 5/8" | Welded | Air, Natural Gas, Oil, Water | ASME B16.9, ASTM A403, MSS SP-43 | 10 | 316 Stainless Steel, 316/316L Stainless Steel | 150 | 316 Stainless Steel, 316/316L Stainless Steel | 43645K396 | 00000 | 44695K217 | 00000 | ||
| 2 1/2 | 0.12" | 4 1/8" | Welded | Air, Natural Gas, Oil, Water | ASME B16.9, ASTM A403, MSS SP-43 | 10 | 316 Stainless Steel, 316/316L Stainless Steel | 150 | 316 Stainless Steel, 316/316L Stainless Steel | 43645K153 | 00000 | 44695K218 | 000000 | ||
| 3 | 0.12" | 5" | Welded | Air, Natural Gas, Oil, Water | ASME B16.9, ASTM A403, MSS SP-43 | 10 | 316 Stainless Steel, 316/316L Stainless Steel | 150 | 316 Stainless Steel, 316/316L Stainless Steel | 43645K398 | 00000 | 44695K219 | 000000 | ||
| 4 | 0.12" | 6 3/16" | Welded | Air, Natural Gas, Oil, Water | ASME B16.9, ASTM A403, MSS SP-43 | 10 | 316 Stainless Steel, 316/316L Stainless Steel | 150 | 316 Stainless Steel, 316/316L Stainless Steel | 43645K399 | 00000 | 44695K221 | 000000 | ||
| 6 | 0.134" | 8 1/2" | Welded | Air, Natural Gas, Oil, Water | ASME B16.9, ASTM A403, MSS SP-43 | 10 | 316 Stainless Steel, 316/316L Stainless Steel | 150 | 316 Stainless Steel, 316/316L Stainless Steel | 43645K154 | 000000 | 44695K151 | 000000 | ||
| 8 | 0.148" | 10 5/8" | Welded | Air, Natural Gas, Oil, Water | ASME B16.9, ASTM A403, MSS SP-43 | 10 | 316 Stainless Steel, 316/316L Stainless Steel | 150 | 316 Stainless Steel, 316/316L Stainless Steel | 43645K155 | 000000 | 44695K166 | 000000 | ||
| 12 | 0.18" | 15" | Welded | Air, Natural Gas, Oil, Water | ASME B16.9, ASTM A403, MSS SP-43 | 10 | 316 Stainless Steel, 316/316L Stainless Steel | 150 | 316 Stainless Steel, 316/316L Stainless Steel | 43645K462 | 000000 | 44695K256 | 000000 | ||
High-Pressure Stainless Steel Unthreaded Pipe Flanges
Forged Flanges
|
Stub End with Straight Adapter (Front) |
Forged flanges have better strength than cast flanges.
Stub-End Fitting Connection—Stub-end flanges are also known as lap-joint flanges. Use them with a stub-end straight adapter (not included). The stub-end straight adapter slides into the flange and welds to pipe (not the flange). Since the flange isn’t welded to the pipe, it can be disconnected easily for frequent cleaning and inspecting.
304/304L Stainless Steel—Flanges hold up in humid, damp, and washdown environments but will corrode if exposed to salt water or chemicals.
316/316L Stainless Steel—Flanges are the most corrosion resistant. They stand up to wet environments, just like 304 stainless steel flanges, but unlike 304 stainless steel, they will not corrode from salt water, chlorine solutions, and chemicals.
Pipe Size | Dash Size | Bolt Hole | 304/304L Stainless Steel | 316/316L Stainless Steel | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
(A) | (B) | (A) | (B) | Flanged Connection Surface (B) | Flange OD | For Bolt Dia. | Dia. | No. Of | Bolt Circle Dia. | Pressure Class | Max. Pressure @ Temp. | Max. Steam Pressure @ Temp. | Each | Each | ||||
Stub End | ||||||||||||||||||
| 3/4 | 3/4 | 12 | 12 | Flat | 4 5/8" | 5/8" | 0.75" | 4 | 3 1/4" | 300 | 600 psi @ 72° F | 300 psi @ 360° F | 4448T298 | 000000 | ——— | 0 | ||
| 1 | 1 | 16 | 16 | Flat | 4 7/8" | 5/8" | 0.75" | 4 | 3 1/2" | 300 | 600 psi @ 72° F | 300 psi @ 360° F | 4448T299 | 00000 | 4452T319 | 000000 | ||
| 1 | 1 | 16 | 16 | Flat | 4 7/8" | 5/8" | 0.75" | 4 | 3 1/2" | 600 | 1,200 psi @ 72° F | 840 psi @ 400° F | 1538N77 | 00000 | ——— | 0 | ||
| 1 1/2 | 1 1/2 | 24 | 24 | Flat | 6 1/8" | 3/4" | 0.875" | 4 | 4 1/2" | 300 | 600 psi @ 72° F | 300 psi @ 360° F | 4448T312 | 000000 | 4452T322 | 000000 | ||
| 2 | 2 | 32 | 32 | Flat | 6 1/2" | 5/8" | 0.75" | 8 | 5" | 300 | 600 psi @ 72° F | 300 psi @ 360° F | 4448T313 | 000000 | 4452T323 | 000000 | ||
| 2 1/2 | 2 1/2 | 40 | 40 | Flat | 7 1/2" | 3/4" | 0.875" | 8 | 5 7/8" | 300 | 600 psi @ 72° F | 300 psi @ 360° F | 4448T314 | 000000 | 4452T324 | 000000 | ||
| 3 | 3 | 48 | 48 | Flat | 8 1/4" | 3/4" | 0.875" | 8 | 6 5/8" | 300 | 600 psi @ 72° F | 300 psi @ 360° F | 4448T315 | 000000 | 4452T325 | 000000 | ||
| 4 | 4 | 64 | 64 | Flat | 10" | 3/4" | 0.875" | 8 | 7 7/8" | 300 | 600 psi @ 72° F | 300 psi @ 360° F | 4448T262 | 000000 | ——— | 0 | ||
| 4 | 4 | 64 | 64 | Flat | 10 3/4" | 7/8" | 1" | 8 | 8 1/2" | 600 | 1,200 psi @ 72° F | 840 psi @ 400° F | 1538N84 | 000000 | ——— | 0 | ||
| 6 | 6 | 96 | 96 | Flat | 12 1/2" | 3/4" | 0.875" | 12 | 10 5/8" | 300 | 600 psi @ 72° F | 300 psi @ 360° F | 4448T263 | 000000 | ——— | 0 | ||
Stub-End Straight Adapters
|
Straight Adapter |
304/304L Stainless Steel | 316/316L Stainless Steel | ||||||||
|---|---|---|---|---|---|---|---|---|---|
Pipe Size | Wall Thk. | Flange OD | Construction | Pipe Schedule | Each | Each | |||
| 3/4 | 0.113" | 1 11/16" | Welded | 40 | 45605K652 | 000000 | ——— | 0 | |
| 1 | 0.133" | 2" | Welded | 40 | 45605K653 | 00000 | 45555K653 | 000000 | |
| 1 1/2 | 0.145" | 2 7/8" | Welded | 40 | 45605K655 | 00000 | 45555K655 | 00000 | |
| 2 | 0.154" | 3 5/8" | Welded | 40 | 45605K656 | 00000 | 45555K656 | 00000 | |
| 2 1/2 | 0.203" | 4 1/8" | Welded | 40 | 45605K657 | 00000 | 45555K657 | 00000 | |
| 3 | 0.216" | 5" | Welded | 40 | 45605K661 | 00000 | 45555K661 | 00000 | |
| 4 | 0.237" | 6 3/16" | Welded | 40 | 45605K663 | 00000 | ——— | 0 | |
| 6 | 0.28" | 8 1/2" | Welded | 40 | 45605K665 | 000000 | ——— | 0 | |
