GOST 12820-80 12821-80 China Factory Supply Flange Stainless Carbon Steel Flange

Slip On Weld Flange/Flat Welded Flange with Neck
Slip on weld fange can be slid onto a pipe and then welded in place.It is made of carbon steel,alloy steel,and stainless steel.The industrial processes come into die forging,and machining,We can provide a wide range of slip-on weld flanges,following on standards like GOST33259,GOST12821/GOST12820,BS4504, ASME B16.5,ASME B16.47,DIN 2634,DIN 2636,JIS,UNI,…and so on.
SIze of slip on weld flange
Slip on weld flange: 3/8″~40″
DN10~DN1000
Pressure
American Series: CLASS 150, CLASS 300, CLASS 400, CLASS 600, CLASS 900, CLASS 1500, CLASS 2500
European Series: PN 2.5, PN 6, PN 10, PN 16, PN 25, PN 40, PN 63, PN 100, PN 160, PN 250, PN 320, PN 400
Flange Facing Types
American Series:Flat Face (FF), Groove (G), Ring Joints Face(R)

Butt welding flange/Weld Neck Flange/WN Flange
It refers to a flange with a neck and a round pipe transition and butt welding connection with the pipe. We produce ASME B16.5 butt welding flanges, GOST12820, GOST12821, GOST33259, BS4504,ASME B16.47 butt welding flanges, DIN 2631 butt welding flanges Welding flanges, DIN 2637 butt welding flanges, DIN 2632 butt welding flanges, DIN 2638 butt welding flanges, DIN 2633 butt welding flanges, etc. Welding flanges are suitable for pipelines with large fluctuations in pressure or temperature or high temperature, High pressure and low temperature pipelines are also used for pipelines that transport expensive, flammable and explosive media. Butt welding flanges are not easily deformed, have good sealing, and are widely used.
Size
Butt welding flange: 3/8″~160″
DN10~DN4000
pressure
American series: CLASS 150, CLASS 300, CLASS 400, CLASS 600, CLASS 900, CLASS 1500, CLASS 2500
European series: PN 2.5, PN 6, PN 10, PN 16, PN 25, PN 40, PN 63, PN 100, PN 160, PN 250, PN 320, PN 400
Flange sealing surface type
American series: flat surface (FF), raised surface (RF), grooved surface ( G), Concave and convex surface (MFM), Ring connection surface (RJ)

Blind Flange

Blind flanges are made of carbon steel,stainless steel and alloy steel,etc.They are used to seal or block off a pipe, like a cover or cap. We can provide a wide range of blind flanges,in accordance to standards like GOST33259,GOST12821/GOST12820,BS4504, ASME B16.5,ASME B16.47,DIN 2634,DIN 2636,and so on.
Size
Blind Flange: 3/8″~100″
DN10~DN2500
Pressure
American Series: CLASS 150, CLASS 300, CLASS 400, CLASS 600, CLASS 900, CLASS 1500, CLASS 2500
European Series: PN 2.5, PN 6, PN 10, PN 16, PN 25, PN 40, PN 63, PN 100, PN 160, PN 250, PN 320, PN 400
Flange Facing Types
American Series:Flat Face (FF), Raised Face (RF), Groove (G), Female(F), Ring Joints Face(RJ)

Flat Welded Flange/ Plate Flange
These flat welding flanges are GOST33259,GOST12820,GOST12821,BS4504, ASME B16.5 flat welding flange, ASME B16.47 flat welding flange, DIN 2634 flat welding flange, DIN 2635 flat welding flange, DIN 2630 flat welding flange, DIN 2636 flat welding method Flanges, DIN 2631 flat welding flanges, DIN 2637 flat welding flanges, etc. Flanges are parts that connect pipes to each other and are connected to pipe ends. There are holes on the flange, and bolts make the two flanges tightly connected. Gaskets are used to seal between flanges. Flat welding flanges are suitable for steel pipe connections with a nominal pressure not exceeding 2.5MPa. The sealing surfaces of flat welding flanges can be made of smooth, concave-convex and tongue-and-groove types.
Size
Flat welding flange: 3/8″~40″
DN10~DN1000
Pressure
American series: CLASS 150, CLASS 300, CLASS 400, CLASS 600, CLASS 900, CLASS 1500, CLASS 2500
European series: PN 2.5, PN 6, PN 10, PN 16, PN 25, PN 40, PN 63, PN 100, PN 160, PN 250, PN 320, PN 400