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| Flange Standard | Flange Size | Flange Pressure | Flange Type |
| ANSI B16.5 | 1/2''-48'' | Class150 Class300 | Blind Plate Slip on Welding Neck |
| ASME B16.5 | Class600 Class900 | Socket weling Threaded RTJ(tring type joint ) |
| ASA B16.5 | Class1500 Class2500 | Facing: FF (flat face) RF (raised face) |
| ANSI B16.47 (A) | 1/2''-60'' | Class150,300 | Slip on Welding neck RTJ(ring type joint) |
| Class400,600,900 | Facing: FF (flat face) RF (raised face) |
| ANSI B16.5 (B) | 26''-60'' | Class75,150,300 | Slip on Welding neck RTJ(ring type joint) |
| Facing: FF (flat face) RF (raised face) |
| ANSI B16.36 | 1"-24" | Class300,400,600 | Slip on Welding neck Threaded RTJ |
| Class900,1500,2500 | Facing: FF (flat face) RF (raised face) |
| EN1092-1 Type01 | DN10-DN2000 | pn6 pn10 pn16 pn25 pn40 | Plate flange |
| EN1092-1 Type05 | DN10-DN3000 | pn6 pn10 pn16 pn25 pn40 | Blind flange |
| EN1092-1 Type11 | DN15-DN3000 | pn6 pn10 pn16 pn25 pn40 | Welding neck flange |
| EN1092-1 Type13 | DN10-DN150 | pn6 pn10 pn16 pn25 pn40 | Threaded flange |
| EN1092-1 Type02 | DN15-DN1000 | pn6 pn10 pn16 | Loose flange |
| GOST 12820-80 | DN15-DN2000 | pn0.6MPa 1.0MPa 1.6MPa | Plate flange |
| pn2.5MPa 4.0MPa 6.4MPa | FF(flate face) RF(raised face) |
| GOST 12821-80 | DN15-DN2000 | pn0.6MPa 1.0MPa 1.6MPa | Welding neck flange |
| pn2.5MPa 4.0MPa 6.4MPa | FF(flate face) RF(raised face) |
| GOST 12836 | DN15-DN2000 | pn0.6MPa 1.0MPa 1.6MPa | Blind flange |
| pn2.5MPa 4.0MPa | FF(flate face) RF(raised face)
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