Butt welding flange

Butt welding flange
Features of butt welding flange: the butt welding flange is generally made of forging or forging and rolling process, which is not easy to deform, well sealed and widely used. It has corresponding rigidity and elasticity requirements and reasonable butt welding thinning transition. The distance between the welded junction and the joint surface is large, and the joint surface is free from welding temperature deformation. It adopts a relatively complex horn shape structure, It is applicable to pipelines with large fluctuation of pressure or temperature or pipelines with high temperature, high pressure and low temperature. It is generally used for the connection of pipelines and valves with PN greater than 2.5MPa; It is also used for pipelines conveying expensive, flammable and explosive media.
1: Material classification:
Carbon steel: ASTM a105,20#, Q235, 16Mn, ASTM A350, LF1, LF2, CL1 / Cl2, LF3, CL1 / Cl2, ASTM a694, F42, F46, F48, F50, f52, f56, F60, F65, F70;
Alloy steel: ASTM A182 F1, f5a, F9, F11, F12, F22, F91, a182f12, a182f11, 16MnR, Cr5Mo, 12Cr1MoV, 15CrMo, 12cr2mo1, A335P22, st45.8/Ⅲ, 35crmov, 45crmo, etc
Stainless steel: ASTM A182 f304, 304L, F316, 316L, 1Cr18Ni9Ti, 0Cr18Ni9Ti, 321, 18-8
2: Manufacturing standards: national standard, American Standard, Russian standard, Japanese standard, German standard, European standard, electric standard, chemical standard, etc
3: Application: widely used in natural gas, electric power, petroleum, chemical industry, industry, pharmacy, pressure vessel, etc
4: Processing methods: high precision CNC lathe turning, ordinary lathe finishing, argon arc welding and other processing
5: Production process: professional overall forging, forging manufacturing, etc. the production process is mainly divided into forging, casting, cutting and rolling.