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Gost 12820-80 Carbon Steel Plate Flange

Gost 12820-80 Carbon Steel Plate Flange

The Russian standard flange standard basically has the following three kinds of GOST 12815-1980 gost12820-1980 gost12821-1980 the company has strong technical force, advanced equipment, reasonable price, excellent quality, timely delivery and can be processed and customized according to user requirements. This product is widely used in petrochemical power machinery fire fighting and nuclear power industries by users.

1.Specification of Gost 12820-80 carbon steel Plate flange

Size range: DN15 to DN 2000

Design : plate falnge 12820-80, welding neck flange 12821-80

Pressure: PN6, PN10, PN16, PN25, PN40

Material: carbon steel CT-20, stainless steel 304/304L, 316/316L

Coating: rust-proof oil, cold and hot galvanize

Package: sea worthy plywooden case, wooden pallet

Specification of Gost 12820-80 carbon steel Plate flange

2.The structure of Gost 12820-80 carbon steel Plate flange

The structure of Gost 12820-80 carbon steel Plate flange

3.The two sealing surfaces of the Russian standard flange bolts extrude the flange gaskets and form a seal, but this also leads to the destruction of the seal. In order to maintain the seal, you have to maintain a huge bolt force, for this, the bolt must be made bigger. Larger bolts are matched by larger nuts, which means larger diameter bolts are needed to create conditions for tightening the nuts. However, the larger the diameter of the bolt, the applicable Russian standard flange will become bent, the only way is to increase the flange part of the wall thickness. The whole device will require a great deal of size and weight, which is a particular problem in offshore environments, where weight has always been a major concern. Moreover, the Russian standard flange is essentially an invalid seal that requires 50 percent of the bolt load to be used to squeeze the gasket and only 50 percent of the load to maintain the pressure.

 sealing surfaces of the Russian standard flange

4.Our Exibition

Our exhibition


Q:How long will I get your samples?

A:Depends on material and design, 5 to 10 days.

Q:What's your minumum order quantity(MOQ)?

A:1 piece, small order quantities are welcome.

Q:How do you care about the logistic?

A:We work very closely with the logistic brokers, always to get the

most safe and economic solution regarding express delivery, air shipment or sea shipment.

Q:If you make parts wrong, do you refund money?

A:If the parts are wrong, we will return your money or we can make correct parts to you again.  

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