SHIJIAZHUANG DEYE PIPING INDUSTRY CO., LTD（Pipefittings Department)
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Stainless steel pipe tee: 4-way cross pipe fittings are used to connect pipes and change or control flow through a piping system. Cross pipe fittings may stress pipes as temperatures change due to their four-way nature. Because of this, pipe crosses are generally not used as plumbing hydraulic components.
The details Specification as below:
| Products Name | ANSI B16.9 BW SS Smsl seamless and welded Pipe Fitting |
| Types | Traight Tee, Equal Tee, Long Raduis Elbows, Short Raduis Elbow, 180deg bends, Returns, Reducing Eblows,Concentric. Reducers, Eccentric. redcuers, Y tees, caps, Stub Ends, |
| Size | 1/2"-72" DN15-DN1800 |
| Wall Thickness | SCH5S,SCH10s,SCH20S,SCH30,STD,SCH40S,SCH60,XS,SCH80S,SCH100, SCH120,SCH160S,XXS, DIN, SGP JIS thickness |
| Design Standard | ASTMA312, ASTM A403WP, A234WPB A420, ANSI B16.9/B16.28/B16.25 |
| JIS B2311-1997/2312, JIS B2311/B2312, DIN 2605-1/2617/2615, | |
| GB 12459-99,EN Standard etc. | |
| Material List | Stainless Steel304, 304L, 304H, 316, 316L, 316H, 310, SS321, SS321H, 347, 347H, 904L |
| Duplex SS 2507, DSS2205, UNS31803 UNS32750, UNS32760 | |
| 1.4301,1.4306, 1.4401, 1.4435, 1.4406, 1.4404, 1.4462, 1.4410, 1.4501 | |
| Carbon Steel A234 WPB, WP5, WP9,WP11, WP22, A420WPL6, A420WPL8 | |
| ST37.0,ST35.8,ST37.2,ST35.4/8,ST42,ST45,ST52,ST52.4 | |
| STP G38,STP G42,STPT42,STB42,STS42,STPT49,STS49 | |
| Surface | Acid pickling, Polished |
| Application/Usage | Low and middle pressure fluid pipeline,boiler, petroleum and natural gas industry, drilling,chemical industry, electric industry,shipbuilding,fertilizer equipment and pipeline, structure,petrochemical,pharmaceutical industry,etc. |
Thickness List as per ANSI B16.9, MSS SP-44
| Norminal Pipe Size DN (in) | Outside Dimeter D | Norminal Wall Thickness (MM) | |||||||||
| Sch5s | Sch10S | Sch10 | Sch40s | Sch40 | Sch80s | Sch80 | Schl20 | Sch160 | XXS | ||
| 1/8 | 10. 3 | —— | 1. 24 | —— | 1. 73 | 1. 73 | 2. 41 | 2. 41 | —— | —— | —— |
| 1/4 | 13. 7 | — | 1. 65 | — | 2. 24 | 2. 24 | 3. 02 | 3. 02 | — | — | — |
| 3/8 | 17. 1 | — | 1. 65 | — | 2. 31 | 2. 31 | 3. 20 | 3. 20 | — | — | — |
| 1/2 | 21. 3 | 1.65 | 2. 11 | —— | 2. 77 | 2. 77 | 3. 73 | 3. 73 | —— | 4. 78 | 7. 47 |
| 3/4 | 26. 7 | 1.65 | 2. 11 | —— | 2. 87 | 2. 87 | 3. 91 | 3. 91 | —— | 5. 56 | 7. 82 |
| 1 | 33.4 | 1. 65 | 2. 77 | — | 3. 38 | 3. 38 | 4. 55 | 4. 55 | — | 6. 35 | 9. 09 |
| 1 1/4 | 42. 2 | 1.65 | 2. 77 | — | 3. 56 | 3. 56 | 4. 85 | 4. 85 | — | 6. 35 | 9. 70 |
| 1 1/2 | 48. 3 | 1.65 | 2. 77 | —— | 3. 68 | 3. 68 | 5. 08 | 5. 08 | —— | 7. 14 | 10. 15 |
| 2 | 60. 3 | 1. 65 | 2. 77 | —— | 3. 91 | 3. 91 | 5. 54 | 5. 54 | —— | 8. 74 | 11. 07 |
| 2 1/2 | 73. 0 | 2. 11 | 3. 05 | — | 5. 16 | 5. 16 | 7. 01 | 7.01 | — | 9. 53 | 14. 02 |
| 3 | 88. 9 | 2. 11 | 3. 05 | — | 5. 49 | 5. 49 | 7. 62 | 7. 62 | — | 11. 13 | 15. 24 |
| 3 1/2 | 101. 6 | 2. 11 | 3. 05 | —— | 5. 74 | 5. 74 | 8. 08 | 8. 08 | —— | —— | —— |
| 4 | 114. 3 | 2. 11 | 3. 05 | —— | 6. 02 | 6. 02 | 8. 56 | 8. 56 | 11. 13 | 13. 49 | 17. 12 |
| 5 | 141. 3 | 2. 77 | 3. 40 | — | 6. 55 | 6. 55 | 9. 53 | 9. 53 | 12. 70 | 15. 88 | 19. 05 |
| 6 | 168. 3 | 2. 77 | 3. 40 | — | 7. 11 | 7. 11 | 10. 97 | 10. 97 | 14. 27 | 18. 26 | 21.95 |
| 8 | 219. 1 | 2. 77 | 3. 76 | —— | 8. 18 | 8. 18 | 12. 70 | 12. 70 | 18. 26 | 23. 01 | 22.23 |
| 10 | 273. 1 | 3. 40 | 4. 19 | —— | 9. 27 | 9.27 | 12. 70 | 15. 09 | 21. 44 | 28. 58 | 25. 40 |
| 12 | 323.9 | 3. 96 | 4. 57 | — | 9. 53 | 10. 31 | 12. 70 | 17. 48 | 25. 40 | 33. 32 | 25. 40 |
| 14 | 355. 6 | 3. 96 | 4. 78 | 6. 35 | — | 11. 13 | — | 19. 05 | 27. 79 | 35. 71 | — |
| 16 | 406. 4 | 4. 19 | 4. 78 | 6. 35 | —— | 12. 70 | —— | 21. 44 | 30. 96 | 40. 49 | —— |
| 18 | 457. 2 | 4. 19 | 4. 78 | 6. 35 | —— | 14. 27 | —— | 23. 83 | 34. 96 | 45. 24 | —— |
| 20 | 508. 0 | 4. 78 | 5. 54 | 6. 35 | — | 15. 09 | — | 26. 19 | 38. 10 | 50. 01 | — |
| 22 | 558. 8 | 4. 78 | 5. 54 | 6. 35 | — | — | — | 28. 58 | 41. 28 | 53. 98 | — |
| 24 | 609. 6 | 5. 54 | 6. 35 | 6. 35 | —— | 17. 48 | —— | 30. 96 | 46. 02 | 59. 54 | —— |
| 26 | 660.4 | —— | —— | 7. 92 | —— | —— | —— | —— | —— | —— | —— |
| 28 | 711.2 | — | — | 7. 92 | — | — | — | — | — | — | — |
| 30 | 762. 0 | 6. 35 | 7. 92 | 7. 92 | — | — | — | — | — | — | — |
| 32 | 812. 8 | —— | —— | 7. 92 | —— | 17. 48 | —— | —— | —— | —— | —— |
| 34 | 863. 6 | —— | —— | 7. 92 | —— | 17. 48 | —— | —— | —— | —— | —— |
| 36 | 914. 4 | — | — | 7. 92 | — | 17. 48 | — | — | — | — | — |
| 38 | 965.2 | — | — | — | — | — | — | — | — | — | — |
| 40 | 1016. 0 | —— | —— | —— | —— | —— | —— | —— | —— | —— | —— |
| 42 | 1066. 8 | —— | —— | —— | —— | —— | —— | —— | —— | —— | —— |
| 44 | 1117. 6 | — | — | — | — | — | — | — | — | — | — |
| 46 | 1168.4 | — | — | — | — | — | — | — | — | — | — |
| 48 | 1219. 2 | — | — | — | — | — | — | — | — | — | — |
Dimensions of Straight Tees and Crosses
| Nominal Pipe Size (NPS) | Outside Diameter at Bevel | Center-to-End | |
| Run, C | Outlet, M [Notes (1) and (2)] | ||
| 72 | 21.3 | 25 | 25 |
| % | 26.7 | 29 | 29 |
| 1 | 33.4 | 38 | 38 |
| 174 | 42.2 | 48 | 48 |
| i72 | 48.3 | 57 | 57 |
| 2 | 60.3 | 64 | 64 |
| 272 | 73.0 | 76 | 76 |
| 3 | 88.9 | 86 | 86 |
| 372 | 101.6 | 95 | 95 |
| 4 | 114.3 | 105 | 105 |
| 5 | 141.3 | 124 | 124 |
| 6 | 168.3 | 143 | 143 |
| 8 | 219.1 | 178 | 178 |
| 10 | 273.0 | 216 | 216 |
| 12 | 323.8 | 254 | 254 |
| 14 | 355.6 | 279 | 279 |
| 16 | 406.4 | 305 | 305 |
| 18 | 457.0 | 343 | 343 |
| 20 | 508.0 | 381 | 381 |
| 22 | 559.0 | 419 | 419 |
| 24 | 610.0 | 432 | 432 |
| 26 | 660.0 | 495 | 495 |
| 28 | 711.0 | 521 | 521 |
| 30 | 762.0 | 559 | 559 |
| 32 | 813.0 | 597 | 597 |
| 34 | 864.0 | 635 | 635 |
| 36 | 914.0 | 673 | 673 |
| 38 | 965.0 | 711 | 711 |
| 40 | 1 016.0 | 749 | 749 |
| 42 | 1 067.0 | 762 | 711 |
| 44 | 1 118.0 | 813 | 762 |
| 46 | 1 168.0 | 851 | 800 |
| 48 | 1 219.0 | 889 | 838 |
Dimensions of Reducing Outlet Tees and Reducing Outlet Crosses
| Nominal Pipe Size (NPS) | Outside Diameter at Bevel | Center-to-End | Nominal Pipe Size (NPS) | Outside Diameter at Bevel | Center-to-End | ||||
| Run, C | Outlet, M [Note (1)] | Run, C | Outlet, M [Note (1)] | ||||||
| Run | Outlet | Run | Outlet | ||||||
| 1/2 x1/2 x3/8 | 21.3 | 17.3 | 25 | 25 | 4 x 4 x 3-1/2 | 114.3 | 101.6 | 105 | 102 |
| 1/2 x1/2 x1/4 | 21.3 | 13.7 | 25 | 25 | 4x4x3 | 114.3 | 88.9 | 105 | 98 |
| 3/4 x 3/4 x1/2 | 26.7 | 21.3 | 29 | 29 | 4 X 4 X 2-1/2 | 114.3 | 73.0 | 105 | 95 |
| 3/4 x 3/4 x3/8 | 26.7 | 17.3 | 29 | 29 | 4x4x2 | 114.3 | 60.3 | 105 | 89 |
| 1 X 1 X 3/4 | 33.4 | 26.7 | 38 | 38 | 4 x 4 x 1-1/2 | 114.3 | 48.3 | 105 | 86 |
| 1 x 1 x 1/2 | 33.4 | 21.3 | 38 | 38 | |||||
| 5X5X4 | 141.3 | 114.3 | 124 | 117 | |||||
| 1-1/4 x 1-1/4 x 1 | 42.2 | 33.4 | 48 | 48 | 5 X 5 X 3-1/2 | 141.3 | 101.6 | 124 | 114 |
| 1-1/4 x 1-1/4 x3/4 | 42.2 | 26.7 | 48 | 48 | 5X5X3 | 141.3 | 88.9 | 124 | 111 |
| 1-1/4 x 1-1/4 x1/2 | 42.2 | 21.3 | 48 | 48 | 5 X 5 X 2-1/2 | 141.3 | 73.0 | 124 | 108 |
| 5X5X2 | 141.3 | 60.3 | 124 | 105 | |||||
| 1-1/2 x1-1/2 x 1-1/4 | 48.3 | 42.2 | 57 | 57 | 6X6X5 | 168.3 | 141.3 | 143 | 137 |
| 1-1/2 x1-1/2 x 1 | 48.3 | 33.4 | 57 | 57 | 6x6x4 | 168.3 | 114.3 | 143 | 130 |
| 1-1/2 x1-1/2 x3/4 | 48.3 | 26.7 | 57 | 57 | 6 x 6 x 3-1/2 | 168.3 | 101.6 | 143 | 127 |
| 1-1/2 x1-1/2 x 1/2 | 48.3 | 21.3 | 57 | 57 | 6x6x3 | 168.3 | 88.9 | 143 | 124 |
| 6 x 6 x 2-1/2 | 168.3 | 73.0 | 143 | 121 | |||||
| 2 x 2 x 1-1/2 | 60.3 | 48.3 | 64 | 60 | |||||
| 2 x 2 x 1-1/4 | 60.3 | 42.2 | 64 | 57 | 8x8x6 | 219.1 | 168.3 | 178 | 168 |
| 2 X 2 X 1 | 60.3 | 33.4 | 64 | 51 | 8x8x5 | 219.1 | 141.3 | 178 | 162 |
| 2 x 2 x 3/4 | 60.3 | 26.7 | 64 | 44 | 8X8X4 | 219.1 | 114.3 | 178 | 156 |
| 8 x 8 x 3-1/2 | 219.1 | 101.6 | 178 | 152 | |||||
| 2-1/2 X 2-1/2 X 2 | 73.0 | 60.3 | 76 | 70 | |||||
| 2-1/2 X 2-1/2 X 1-1/2 | 73.0 | 48.3 | 76 | 67 | 10 x 10 x 8 | 273.0 | 219.1 | 216 | 203 |
| 2-1/2 X 2-1/2 X 1-1/4 | 73.0 | 42.2 | 76 | 64 | 10 x 10 x 6 | 273.0 | 168.3 | 216 | 194 |
| 2-1/2 X 2-1/2 X 1 | 73.0 | 33.4 | 76 | 57 | 10 x 10 x 5 | 273.0 | 141.3 | 216 | 191 |
| 10 x 10 x 4 | 273.0 | 114.3 | 216 | 184 | |||||
| 3 X 3 X 2-1/2 | 88.9 | 73.0 | 86 | 83 | 12 x 12 x 10 | 323.8 | 273.0 | 254 | 241 |
| 3x3x2 | 88.9 | 60.3 | 86 | 76 | 12 x 12 x 8 | 323.8 | 219.1 | 254 | 229 |
| 3 x 3 x 1-1/2 | 88.9 | 48.3 | 86 | 73 | 12 X 12 X 6 | 323.8 | 168.3 | 254 | 219 |
| 3 x 3 x 1-1/4 | 88.9 | 42.2 | 86 | 70 | 12 x 12 x 5 | 323.8 | 141.3 | 254 | 216 |
| 3-1/2 x 3-1/2 x 3 | 101.6 | 88.9 | 95 | 92 | 14 X 14 X 12 | 355.6 | 323.8 | 279 | 270 |
| 3-1/2 x 3-1/2 x 2-1/2 | 101.6 | 73.0 | 95 | 89 | 14 X 14 X 10 | 355.6 | 273.0 | 279 | 257 |
| 3-1/2 x 3-1/2 x 2 | 101.6 | 60.3 | 95 | 83 | 14 X 14 X 8 | 355.6 | 219.1 | 279 | 248 |
| 3-1/2 x 3-1/2 x 1-1/2 | 101.6 | 48.3 | 95 | 79 | 14 x 14 x 6 | 355.6 | 168.3 | 279 | 238 |
| Size (NPS) | Outside Diameter at Bevel | Center to Ends | Nominal Pipe Size (NPS) | Outside Diameter at Bevel | Center to Ends | ||||
| Run | Outlet | Run, C | Outlet, M [Note (1)] | Run | Outlet | Run, C | Outlet, M [Note (1)] | ||
| 16 x 14 | 406.4 | 355.6 | 305 | 305 | 28 X 28 X 26 | 711 | 660.0 | 521 | 521 |
| 16 x 12 | 406.4 | 323.8 | 305 | 295 | 28 X 28 X 24 | 711 | 610.0 | 521 | 508 |
| 16 x 10 | 406.4 | 273.0 | 305 | 283 | 28 x 28 x 22 | 711 | 559.0 | 521 | 495 |
| 16 x 8 | 406.4 | 219.1 | 305 | 273 | 28 x 28 x 20 | 711 | 508.0 | 521 | 483 |
| 16 x 6 | 406.4 | 168.3 | 305 | 264 | |||||
| 28 X 28 X 18 | 711 | 457.0 | 521 | 470 | |||||
| 18 x 16 | 457.0 | 406.4 | 343 | 330 | 28 X 28 X 16 | 711 | 406.4 | 521 | 457 |
| 18 x 14 | 457.0 | 355.6 | 343 | 330 | 28 x 28 x 14 | 711 | 355.6 | 521 | 457 |
| 18 X 12 | 457.0 | 323.8 | 343 | 321 | 28 X 28 X 12 | 711 | 323.8 | 521 | 448 |
| 18 x 10 | 457.0 | 273.0 | 343 | 308 | |||||
| 18 X 8 | 457.0 | 219.1 | 343 | 298 | 30 X 30 X 28 | 762 | 711.0 | 559 | 546 |
| 30 x 30 x 26 | 762 | 660.0 | 559 | 546 | |||||
| 20 X 18 | 508.0 | 457.0 | 381 | 368 | 30 x 30 x 24 | 762 | 610.0 | 559 | 533 |
| 20 x 16 | 508.0 | 406.4 | 381 | 356 | 30 x 30 x 22 | 762 | 559.0 | 559 | 521 |
| 20 x 14 | 508.0 | 355.6 | 381 | 356 | 30 x 30 x 20 | 762 | 508.0 | 559 | 508 |
| 20 X 12 | 508.0 | 323.8 | 381 | 346 | |||||
| 20 X 10 | 508.0 | 273.0 | 381 | 333 | 30 x 30 x 18 | 762 | 457.0 | 559 | 495 |
| 20 X 8 | 508.0 | 219.1 | 381 | 324 | 30 x 30 x 16 | 762 | 406.4 | 559 | 483 |
| 30 x 30 x 14 | 762 | 355.6 | 559 | 483 | |||||
| 22 X 20 | 559.0 | 508.0 | 419 | 406 | 30 x 30 x 12 | 762 | 323.8 | 559 | 473 |
| 22 x 18 | 559.0 | 457.0 | 419 | 394 | 30 x 30 x 10 | 762 | 273.0 | 559 | 460 |
| 22 x 16 | 559.0 | 406.4 | 419 | 381 | |||||
| 22 X 14 | 559.0 | 355.6 | 419 | 381 | 32 x 32 x 30 | 813 | 762.0 | 597 | 584 |
| 22 X 12 | 559.0 | 323.8 | 419 | 371 | 32 X 32 X 28 | 813 | 711.0 | 597 | 572 |
| 22 X 10 | 559.0 | 273.0 | 419 | 359 | 32 X 32 X 26 | 813 | 660.0 | 597 | 572 |
| 32 x 32 x 24 | 813 | 610.0 | 597 | 559 | |||||
| 24 X 22 | 610.0 | 559.0 | 432 | 432 | |||||
| 24 X 20 | 610.0 | 508.0 | 432 | 432 | 32 X 32 X 22 | 813 | 559.0 | 597 | 546 |
| 24 X 18 | 610.0 | 457.0 | 432 | 419 | 32 X 32 X 20 | 813 | 508.0 | 597 | 533 |
| 32 X 32 X 18 | 813 | 457.0 | 597 | 521 | |||||
| 24 X 16 | 610.0 | 406.4 | 432 | 406 | 32 x 32 x 16 | 813 | 406.4 | 597 | 508 |
| 24 X 14 | 610.0 | 355.6 | 432 | 406 | 32 X 32 X 14 | 813 | 355.6 | 597 | 508 |
| 24 X 12 | 610.0 | 323.8 | 432 | 397 | |||||
| 24 x 10 | 610.0 | 273.0 | 432 | 384 | 34 x 34 x 32 | 864 | 813.0 | 635 | 622 |
| 34 x 34 x 30 | 864 | 762.0 | 635 | 610 | |||||
| 26 X 24 | 660.0 | 610.0 | 495 | 483 | 34 x 34 x 28 | 864 | 711.0 | 635 | 597 |
| 26 x 22 | 660.0 | 559.0 | 495 | 470 | 34 x 34 x 26 | 864 | 660.0 | 635 | 597 |
| 26 X 20 | 660.0 | 508.0 | 495 | 457 | |||||
| 34 x 34 x 24 | 864 | 610.0 | 635 | 584 | |||||
| 26 x 18 | 660.0 | 457.0 | 495 | 444 | 34 x 34 x 22 | 864 | 559.0 | 635 | 572 |
| 26 X 16 | 660.0 | 406.4 | 495 | 432 | 34 x 34 x 20 | 864 | 508.0 | 635 | 559 |
| 26 x 14 | 660.0 | 355.6 | 495 | 432 | 34 x 34 x 18 | 864 | 457.0 | 635 | 546 |
| 26 X 12 | 660.0 | 323.8 | 495 | 422 | 34 x 34 x 16 | 864 | 406.4 | 635 | 533 |
The most common used material for ss butt welded pipefittings is SS304/304L, SS316/316L, DUPLEX SAF2507, SAF2205,
Detail’s specification of the material as below.
Material Analysis
304/304L (UNS S30400/S30403)
Chemical Composition%
| C | Cr | Mn | Ni | P | S | Si |
| ≤ | -- | ≤ | -- | ≤ | ≤ | ≤ |
| 0.035 | 18.0-20.0 | 2.00 | 8.0-13.0 | 0.045 | 0.03 | 1.00 |
Tensile Strength: ≥ 485 Mpa (70KSI)
Yield Strength: ≥170Mpa (25KSPI)
Elongation ≥ 40%
316/316L (UNS S31600/S31603)
Chemical Composition%
| C | Cr | Mn | Mo | Ni | P | S | Si |
| ≤ | -- | ≤ | -- | ≤ | ≤ | ≤ | |
| 0.035 | 16.0-18.0 | 2.00 | 2.0-3.0 | 10.0-14.0 | 0.045 | 0.03 | 1.00 |
Tensile Strength: ≥ 485 Mpa (70KSI)
Yield Strength: ≥170Mpa (25KSPI)
Elongation ≥ 40%
SAF2205 (UNS31803)
| C≤ | Si ≤ | Mn≤ | P ≤ | S ≤ | Cr | Ni | Mo | Cu | N |
| 0.03 | 1.0 | 2.0 | 0.03 | 0.02 | 22-23 | 4.5-6.5 | 3.0-3.50 | / | 0.14-0.2 |
SAF2205 Material Mechnical Performance
| Test Items | Test Temp. | Performance | Standard Data |
| Tensile Strength | Room Temp. | Yield Strength s≥ | 450 Mpa |
| Tensile Strength h ≥ | 620 Mpa | ||
| Elongation % > | 25 | ||
| Reduction of Area=> | / | ||
| Impact Value KV(J) | Room Temp. | Lateral | / |
| Brinell hardness | Room Temp. | ≤ | 290 |
| Rockwell hardness | Room Temp. | ≥ | / |
Duplex SS SAF2507(UNS32750)
| c ≤ | Si≤ | Mn≤ | P≤ | S≤ | Cr | Ni | Mo | Cu≤ | N |
| 0.03 | 0.8 | 1.2 | 0.03 | 0.015 | 24-26 | 6.0-8.0 | 3.0-5.0 | 0.5 | 0.24-0.32 |
Mechanical Peformance
| Test Items | Test Temp. | Performance | Standard Data | |
| Tensile | Room Temp. | Yield Strength | Ø≤55 Rm≥ | 550 Mpa |
| Ø >55 Rm≥ | 515 Mpa | |||
| Tensile Strength | Ø≤55 R0.002 ≥ | 800 Mpa | ||
| Ø >55 R0.002≥ | 760 Mpa | |||
| Elongation A%(4D) > | Ø≤55 ≥ | 15 | ||
| Ø >55 ≥ | 15 | |||
| Brinell hardness HB | Room Temp. | Ø≤5 ≤ | 310 | |
| Ø >55 ≤ | 310 | |||
Designation: A 403/A 403M – 06 Standard Specification for Wrought Austenitic Stainless-Steel Piping Fittings
Other Referenced Documents
ASTM Standards:
A 351/A 351M Specification for Castings, Austenitic, for Pressure-Containing Parts
A 370 Test Methods and Definitions for Mechanical Testing of Steel Products
A 480/A 480M Specification for General Requirements for Flat-Rolled Stainless and Heat-Resisting Steel Plate, Sheet, and Strip
A 743/A 743M Specification for Castings, Iron-Chromium, Iron-Chromium-Nickel, Corrosion Resistant, for General Application
A 744/A 744M Specification for Castings, Iron-Chromium Nickel, Corrosion Resistant, for Severe Service
A 751 Test Methods, Practices, and Terminology for Chemical Analysis of Steel Products
A 960/A 960M Specification for Common Requirements for Wrought Steel Piping Fittings
E 112 Test Methods for Determining Average Grain Size
E 165 Test Method for Liquid Penetrant Examination
ASME Standards:
ASME B16.9 Factory-Made Wrought Steel Butt-Welding Fittings
ASME B16.11 Forged Steel Fittings, Socket-Welding and Threaded ends
MSS Standards: MSS SP-25 Standard Marking System for Valves, Fittings,
Flanges, and Unions
MSS SP-43 Standard Practice for Light Weight Stainless Steel Butt-Welding Fittings
MSS SP-79 Socket-Welding Reducer Inserts
Production Process
1. Raw material Receiving and Cutting
2. Material Identification
3. Elbows, Tees ,reducers, Caps, stub ends, kinds of pipefittings shape forming
4. Material wedling process (welded elbows )
5. Heat Treatment for SS pipefittings
6. Shot Blast and cleaning
7. Surface checking
8. After Polished
9. stainless steel Pipefittings Material In Stock
FAQ
Q:Customer asked for butt weld fittings in A105:
A: Most common carbon steel buttweld fitting material is A234WPB. It is equivalent to A105 flanges, however there is no such thing as an A105 or A106 butt weld fitting.
A106 Gr.B is for pipe grade. The A234WPB fittings are made from A106GR.B pipes. A105 is a material from Bar forged to be High pressure Fittings or Flange
Q: Customer requests “Normalized” butt weld fittings:
A: This is also a misconception since flanges are available in A105 and A105 N, where N stands for normalized.
However, there is no such thing as A234WPBN. Manufactures normalize their butt weld fittings was considered that normalized heat treating process was done, Espeically for the elbows and Tees
Customer needing “normalized” butt weld fittings should request WPL6 fittings which are high yield and are normalized as a standard procedure.
Q: Customer forgets to mention pipe schedule:
A: Buttweld fittings are sold as per pipe size but pipe schedule must be specified to match the ID of the fitting to the ID of the pipe. If no schedule is mentioned, we will assume a standard wall is requested.
Q; Customer forgets to mention welded or seamless butt weld fitting:
Butt weld fittings are available in both welded and seamless configuration. A seamless butt weld carbon steel or stainless steel fitting is made of seamless pipe and is generally more expensive.
Seamless pipe fittings are NOT common in sizes bigger than 12”. Welded pipe fittings are made of ERW welded carbon steel or stainless steel pipe. They are available in sizes ½” to 72” and are more affordable than seamless fittings.
Q: What does Short Radius (SR) or Long Radius (LR) means?
A: You will often hear SR45 elbow or LR45 elbow. The 45 or 90 refers to the angle of the bend for buttweld fitting to change the direction of flow.
A long radius elbow (LR 90 Elbow or LR 45 elbow) will have a pipe bend that will be 1.5 times the size of the pipe. So, a 6 inch LR 90 has bending radius that is 1.5 x nominal pipe size.
A short radius elbow (SR45 or SR90) has a pipe bend that is equal to the size of the fitting, so a 6” SR 45 has a bending radius that is 6” nominal pipe size.
Q: What is a 3R or 3D elbow pipe fitting?
A: First, the terms 3R or 3D are used synonymously. A 3R butt weld elbow has a bending radius that is 3 times the nominal pipe size. A 3R elbow is equal to 3D Elbows