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American standard S0 flange
American standard S0 flange

American standard S0 flange

American standard S0 type flange is American standard plain welding flange with neck, neck butt welding flange ...
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American standard S0 type flange is American standard plain welding flange with neck, neck butt welding flange refers to a flange with a cone neck and butt welding with the barrel or pipe, which is an integral flange.

Material classification of American standard flange:

1. Carbon Steel

ASTM A105,20#, Q235, 16Mn, Q345b, ASTM A350 LF1, LF2 CL1/CL2, LF3 CL1/CL2, ASTM A694 F42, F46, F48, F50, F52, F56, F60, F65, F70.

2. Stainess Steel:

ASTM A182 F304, 304L, F316, 316L, 1Cr18Ni9Ti, 0Cr18Ni9Ti, 321, 18-8.

3. Alloy Steel:

ASTM A182 F1, F5a, F9, F11, F12, making, F91, A182F12, A182F11, 16 MNR, Cr5Mo, 12 cr1mov, 15 crmo, 12 cr2mo1, A335P22, St45.8 / Ⅲ.

Due to the transition structure of cone neck and butt welding connection, the strength and stiffness of flange are strengthened, and the sealing property is better than that of plain welding flange. The disadvantage is to use forgings manufacturing, cost more materials, manufacturing costs. Suitable for high pressure, high temperature or high sealing requirements.

Butt welding flange is a kind of pipe fitting, it refers to the flange with neck and circular pipe transition and butt welding connection with the pipe. Butt welding flange is not easy to deformation, good sealing, widely used, there are corresponding rigid and elastic requirements and reasonable butt welding thin transition, welding from the welding surface distance, welding surface from welding temperature deformation.

Scope of application:

Butt welding flange is not easy to deformation, good sealing, wide application, have corresponding rigid and elastic demand and reasonable butt thinning transition, joint good distance away from the joint face the faying surface from welding deformation temperature, it take more complex syndromes beep form structure, suitable for pressure or temperature fluctuations of pipeline or high temperature, high pressure and low temperature pipes, commonly used in PN is greater than 2.5 MPa pipe and valve connection; Also used to transport expensive, flammable, explosive medium on the pipeline.