| Nominal Diameter (DN) | NPS | Outside Diameter Series A (mm) | Outside Diameter Series B (mm) | End-to-End H (mm) |
|---|---|---|---|---|
| 20×15 | ¾″ × ½″ | 26.9×21.3 | 25×18 | 38 |
| 20×10 | ¾″ × ⅜″ | 26.9×17.3 | 25×14 | 38 |
| 25×20 | 1″ × ¾″ | 33.7×26.9 | 32×25 | 51 |
| 25×15 | 1″ × ½″ | 33.7×21.3 | 32×18 | 51 |
| 32×25 | 1¼″ × 1″ | 42.4×33.7 | 38×32 | 51 |
| 32×20 | 1¼″ × ¾″ | 42.4×26.9 | 38×25 | 51 |
| 32×15 | 1¼″ × ½″ | 42.4×21.3 | 38×18 | 51 |
| 40×32 | 1½″ × 1¼″ | 48.3×42.4 | 45×38 | 64 |
| 40×25 | 1½″ × 1″ | 48.3×33.7 | 45×32 | 64 |
| 40×20 | 1½″ × ¾″ | 48.3×26.9 | 45×25 | 64 |
| 40×15 | 1½″ × ½″ | 48.3×21.3 | 45×18 | 64 |
| 50×40 | 2″ × 1½″ | 60.3×48.3 | 57×45 | 76 |
| 50×32 | 2″ × 1¼″ | 60.3×42.4 | 57×38 | 76 |
| 50×25 | 2″ × 1″ | 60.3×33.7 | 57×32 | 76 |
| 50×20 | 2″ × ¾″ | 60.3×26.9 | 57×25 | 76 |
| 65×50 | 2½″ × 2″ | 73.0×60.3 | 76×57 | 89 |
| 65×40 | 2½″ × 1½″ | 73.0×48.3 | 76×45 | 89 |
| 65×32 | 2½″ × 1¼″ | 73.0×42.4 | 76×38 | 89 |
| 65×25 | 2½″ × 1″ | 73.0×33.7 | 76×32 | 89 |
| 80×65 | 3″ × 2½″ | 88.9×73.0 | 89×76 | 89 |
| 80×50 | 3″ × 2″ | 88.9×60.3 | 89×57 | 89 |
| 80×40 | 3″ × 1½″ | 88.9×48.3 | 89×45 | 89 |
| 80×32 | 3″ × 1¼″ | 88.9×42.4 | 89×38 | 89 |
| 90×80 | 3½″ × 3″ | 101.6×88.9 | – | 102 |
| 90×65 | 3½″ × 2½″ | 101.6×73.0 | – | 102 |
| 90×50 | 3½″ × 2″ | 101.6×60.3 | – | 102 |
| 90×40 | 3½″ × 1½″ | 101.6×48.3 | – | 102 |
| 90×32 | 3½″ × 1¼″ | 101.6×42.4 | – | 102 |
| 100×90 | 4″ × 3½″ | 114.3×101.6 | – | 102 |
| 100×80 | 4″ × 3″ | 114.3×88.9 | 108×89 | 102 |
| 100×65 | 4″ × 2½″ | 114.3×73.0 | 108×76 | 102 |
| 100×50 | 4″ × 2″ | 114.3×60.3 | 108×57 | 102 |
| 100×40 | 4″ × 1½″ | 114.3×48.3 | 108×45 | 102 |
| 125×100 | 5″ × 4″ | 141.3×114.3 | 133×108 | 127 |
| 125×90 | 5″ × 3½″ | 141.3×101.6 | – | 127 |
| 125×80 | 5″ × 3″ | 141.3×88.9 | 133×89 | 127 |
| 125×65 | 5″ × 2½″ | 141.3×73.0 | 133×76 | 127 |
| 125×50 | 5″ × 2″ | 141.3×60.3 | 133×57 | 127 |
| 150×125 | 6″ × 5″ | 168.3×141.3 | 159×133 | 140 |
| 150×100 | 6″ × 4″ | 168.3×114.3 | 159×108 | 140 |
| 150×90 | 6″ × 3½″ | 168.3×101.6 | – | 140 |
| 150×80 | 6″ × 3″ | 168.3×88.9 | 159×89 | 140 |
| 150×65 | 6″ × 2½″ | 168.3×73.0 | 159×76 | 140 |
| 200×150 | 8″ × 6″ | 219.1×168.3 | 219×159 | 152 |
| 200×125 | 8″ × 5″ | 219.1×141.3 | 219×133 | 152 |
| 200×100 | 8″ × 4″ | 219.1×114.3 | 219×108 | 152 |
| 200×90 | 8″ × 3½″ | 219.1×101.6 | – | 152 |
| 250×200 | 10″ × 8″ | 273.0×219.1 | 273×219 | 178 |
| 250×150 | 10″ × 6″ | 273.0×168.3 | 273×159 | 178 |
| 250×125 | 10″ × 5″ | 273.0×141.3 | 273×133 | 178 |
| 250×100 | 10″ × 4″ | 273.0×114.3 | 273×108 | 178 |
| 300×250 | 12″ × 10″ | 323.9×273.1 | 325×273 | 203 |
| 300×200 | 12″ × 8″ | 323.9×219.1 | 325×219 | 203 |
| 300×150 | 12″ × 6″ | 323.9×168.3 | 325×159 | 203 |
| 300×125 | 12″ × 5″ | 323.9×141.3 | 325×133 | 203 |
| 350×300 | 14″ × 12″ | 355.6×323.9 | 377×325 | 330 |
| 350×250 | 14″ × 10″ | 355.6×273.0 | 377×273 | 330 |
| 350×200 | 14″ × 8″ | 355.6×219.1 | 377×219 | 330 |
| 350×150 | 14″ × 6″ | 355.6×168.3 | 377×159 | 330 |
| 400×350 | 16″ × 14″ | 406.4×355.6 | 426×377 | 356 |
| 400×300 | 16″ × 12″ | 406.4×323.9 | 426×325 | 356 |
| 400×250 | 16″ × 10″ | 406.4×273.0 | 426×273 | 356 |
| 400×200 | 16″ × 8″ | 406.4×219.1 | 426×219 | 356 |
| 450×400 | 18″ × 16″ | 457×406.4 | 478×426 | 381 |
| 450×350 | 18″ × 14″ | 457×355.6 | 478×377 | 381 |
| 450×300 | 18″ × 12″ | 457×323.9 | 478×325 | 381 |
| 450×250 | 18″ × 10″ | 457×273.0 | 478×273 | 381 |
| 500×450 | 20″ × 18″ | 508×457 | 529×478 | 508 |
| 500×400 | 20″ × 16″ | 508×406.4 | 529×426 | 508 |
| 500×350 | 20″ × 14″ | 508×355.6 | 529×377 | 508 |
| 500×300 | 20″ × 12″ | 508×323.9 | 529×325 | 508 |
| 550×500 | 22″ × 20″ | 559×508 | – | 508 |
| 550×450 | 22″ × 18″ | 559×457 | – | 508 |
| 550×400 | 22″ × 16″ | 559×406.4 | – | 508 |
| 550×350 | 22″ × 14″ | 559×355.6 | – | 508 |
| 600×550 | 24″ × 22″ | 610×559 | – | 508 |
| 600×500 | 24″ × 20″ | 610×508 | 630×529 | 508 |
| 600×450 | 24″ × 18″ | 610×457 | 630×478 | 508 |
| 600×400 | 24″ × 16″ | 610×406.4 | 630×426 | 508 |
| 650×600 | 26″ × 24″ | 660×610 | – | 610 |
| 650×550 | 26″ × 22″ | 660×559 | – | 610 |
| 650×500 | 26″ × 20″ | 660×508 | – | 610 |
| 650×450 | 26″ × 18″ | 660×457 | – | 610 |
| 700×650 | 28″ × 26″ | 711×660 | – | 610 |
| 700×600 | 28″ × 24″ | 711×610 | 720×630 | 610 |
| 700×550 | 28″ × 22″ | 711×559 | – | 610 |
| 700×500 | 28″ × 20″ | 711×508 | 720×530 | 610 |
| 750×700 | 30″ × 28″ | 762×711 | – | 610 |
| 750×650 | 30″ × 26″ | 762×660 | – | 610 |
| 750×600 | 30″ × 24″ | 762×610 | – | 610 |
| 750×550 | 30″ × 22″ | 762×559 | – | 610 |
| 800×750 | 32″ × 30″ | 813×762 | – | 610 |
| 800×700 | 32″ × 28″ | 813×711 | 820×720 | 610 |
| 800×650 | 32″ × 26″ | 813×660 | – | 610 |
| 800×600 | 32″ × 24″ | 813×610 | 820×630 | 610 |
| 850×800 | 34″ × 32″ | 864×813 | – | 610 |
| 850×750 | 34″ × 30″ | 864×762 | – | 610 |
| 850×700 | 34″ × 28″ | 864×711 | – | 610 |
| 850×650 | 34″ × 26″ | 864×660 | – | 610 |
| 900×850 | 36″ × 34″ | 914×864 | – | 610 |
| 900×800 | 36″ × 32″ | 914×813 | 920×820 | 610 |
| 900×750 | 36″ × 30″ | 914×762 | – | 610 |
| 900×700 | 36″ × 28″ | 914×711 | 920×720 | 610 |
Each flange follows a rigorous 8-step forging and quality-control process to ensure conformance with ASTM A182 and ASME standards.
Prime 304 stainless steel billet sourced and certified.
Heat to 1100°C – 1250°C for optimal forgeability.
Shape billet into flange geometry under controlled pressure.
Solution anneal at 1040°C – 1120°C, then quench.
CNC machining, drilling, and surface finishing.
Tensile, hardness, PMI, visual and impact tests performed.