GOST Weld Neck Flange

specification:

FLANGE WELD NECK

PN6,PN10,PN16,PN25,PN40,PN63,PN100,PN200

DN15-DN1600

FLANGE GOST-12821-80

Type:Welding neck(WN)


Material:CT20,16Mn,stainless steel 304/316/316L,Q235

Processing technic:Forging

Surface treatment:Rust-preventative oil

Butt welding flange is two large diameter pipe connection device, usually two flange and number of the bolt, its plastic strength is low, after adding suitable amount of carbon becomes hard, plastic lower strength enhanced.Connection it may need to bear very high tensile, compression, torsion and shear strength.Butt welding flange conveniently, manufacture simple, low cost, widely used, but with poor rigidity, therefore shall not be used for supply and demand, flammable, explosive and high vacuum degree requirements of the chemical process piping systems and height, extremely dangerous situations.Sealing surface type plane and surface.Butt welding flange welding electrode consumption is much, can not stand high temperature, high pressure, repeated bending and temperature fluctuations.




High Pressure Carbon Steel GOST 12821-80 PN10 Welding Neck Flanges
High Pressure Carbon Steel GOST 12821-80 PN10 Welding Neck Flanges

High Pressure Carbon Steel GOST 12821-80 PN6 Welding Neck Flanges
High Pressure Carbon Steel GOST 12821-80 PN6 Welding Neck Flanges

High Pressure Carbon Steel GOST 12821-80 PN16 Welding Neck Flanges
High Pressure Carbon Steel GOST 12821-80 PN16 Welding Neck Flanges

High Pressure Carbon Steel Gost 12821-80 Pn25 Welding Neck Flanges
High Pressure Carbon Steel Gost 12821-80 Pn25 Welding Neck Flanges

High Pressure Carbon Steel GOST 12821-80 PN 40 Welding Neck Flanges
High Pressure Carbon Steel GOST 12821-80 PN 40 Welding Neck Flanges

Forged Carbon Steel Welding Neck Flange GOST 12821-80 PN40
Forged Carbon Steel Welding Neck Flange GOST 12821-80 PN40

Forged Carbon Steel Welding Neck Flange GOST 12821-80 PN25
Forged Carbon Steel Welding Neck Flange GOST 12821-80 PN25

Forged  Carbon Steel Welding Neck Flange GOST 12821-80 PN16
Forged Carbon Steel Welding Neck Flange GOST 12821-80 PN16

Forged  Carbon Steel Welding Neck Flange GOST 12821-80 PN10
Forged Carbon Steel Welding Neck Flange GOST 12821-80 PN10

Forged  Carbon Steel Welding Neck Flange GOST 12821-80 PN6
Forged Carbon Steel Welding Neck Flange GOST 12821-80 PN6

Gost 12820  forged collar flanges
Gost 12820 forged collar flanges

Contact Information

CONTACT US

Hebei Jimeng Highstrength Flange-tubes Group Co.,Ltd.

Contact Person: Xuefeng Zhang

Phone:86-0317-2209363

Fax:86-0317-2208938

Address: North Circle Industrial Area of Mengcun County,Cangzhou,Hebei

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