| Norms* | |
| DIN2527 PN6 – PN100 | Blind flanges |
| DIN2566 PN10 – PN16 | Screwed flanges |
| DIN2573; DIN2576 | Flanges for soldering or welding |
| DIN2630; DIN2631; DIN2632; DIN2633; DIN2634; DIN2635; DIN2636; DIN2637; DIN2638; DIN2628; DIN2629; DIN2627 |
Welding neck flanges |
| DIN2641; DIN2642 | Lapped flanges (loose flange) |
| DIN2655; DIN2656 | Lapped flanges, plain collars |
| DIN2673 | Lapped joint short stub end |
| DIN86029; DIN86030 | Hubbed slip-on flange for welding |
| EN1092-1 | Flanges and their joints – circular flanges for pipes, valves, fittings and accessories, PN designated – Part 1: Steel flanges |
| EN1092-1 Type 01 PN2,5 – PN100 | Plate flange for welding |
| EN1092-1 Type 02 PN2,5 – PN40 | Loose plate flange for Types 32-37 |
| EN1092-1 Type 04 PN10 – PN40 | Loose plate flange for Type 34 |
| EN1092-1 Type 05 PN2,5 – PN100 | Blank flange |
| EN1092-1 Type 11 PN2,5 – PN400 | Weld-neck flange |
| EN1092-1 Type 12 PN6 – PN100 | Hubbed slip-on flange for welding |
| EN1092-1 Type 13 PN6 – PN100 | Hubbed theaded flange |
| EN1092-1 Type 21 PN2,5 – PN400 | Intergral flange |
| EN1092-1 Type 32 PN2,5 – PN40 | Weld-on plate collar |
| EN1092-1 Type 33 PN2,5 – PN16 | Lapped end pipe |
| EN1092-1 Type 34 PN10 – PN40 | Weld-neck collar |
| EN1092-1 Type 35 PN2,5 – PN40 | Welding neck |
| EN1092-1 Type 36 PN2,5 – PN16 | Pressed collar with long neck |
| EN1092-1 Type 37 PN2,5 – PN16 | Pressed collar |
| ASME/ANSI B16.5 | Pipe flanges and flanged fittings |
| ASME/ANSI B16.36 | Orifice flanges |
| GOST12820-80 | Plain flanges for welding |
| GOST12821-80 | Welding neck flanges |
| GOST12822-80 | Loose flanges, plain collars |
| AD2000-Merkblatt | |
| W0 | General principles for materials |
| W2 | Austenitic steels |
| W9 | Steel flanges |
| W10 | Low temperature materials, iron materials |
| W13 | Forgings and rolled carbon and alloy steel parts |
| VdTUEV-Material Sheet | |
| 350/3 | Flanges acc. DIN EN 1092-1 steel C22.8/P250GH |
| 354/3 | Weldable fine-grain steels |
| 399/3 | Non-alloy structual steel C21 |
* JIS, ANFOR and other national or special design.
Standards and technical documents are subject to constant evolution. This means that even our installation is subject to constant change and in individual cases may not be up-to-date.
