| Standard number | Standard name |
| HG20592-20635 | Steel pipe flanges, gaskets, fasteners |
| ASME B16.5 | Pipe flanges and flange fittings |
| ASME B16.47 | Large diameter steel pipe flanges and blind plates |
| JIS | Steel pipe flanges (Japanese standard) |
| DIN 2500-28117 | Steel pipe flange (German standard) |
| EN1092-1 | Steel pipe flange (European standard) |
| SH 3406 | Petrochemical steel pipe flange |
| GB 9112-9124 | Steel pipe flange (national standard) |
| GB/T4700-4707 | Pressure vessel flange |
LWN Flanges
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Butt welding flange
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Butt welding flange
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Butt welding flange
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Flat welding flange
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Flat welding flange
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