-
GOST Welding Neck Flange
GOST 12836 PN6
GOST 12836 PN10
GOST 12836 PN16
GOST 12836 PN25
GOST 12836 PN40
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GOST Flat Welding Flange
GOST 12820-80 PN6
GOST 12820-80 PN10
GOST 12820-80 PN16
GOST 12820-80 PN25
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GOST Flat Flanges
GOST 12821-80 PN6
GOST 12821-80 PN10
GOST 12821-80 PN16
GOST 12821-80 PN25
GOST 12821-80 PN40
GOST 12821-80 PN63
GOST 12821-80 PN100
GOST 12821-80 PN160
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GOST Blind Flange
GOST 12820-80 PN6
GOST 12820-80 PN10
GOST 12820-80 PN16
GOST 12820-80 PN25
- WELCOME TO Cangzhou Lion Pipeline technology Co., Ltd.
