Socket welding flange

Overview of Socket welding flange

Features of Socket welding flange

Socket welding is usually used for small pipes with a diameter less than DN40 and is more economical. Butt welding is usually used for parts above DN40. Socket welding is the process of first inserting the socket and then welding it (for example, there is a flange called a socket flange, which is a convex welding flange that is connected to other parts (such as valves). The connection form of butt welding flange and pipeline welding, socket welding usually involves inserting the pipeline into the flange and welding it, while butt welding uses the butt welding flange to weld the pipeline to the mating surface. Although X-ray inspection is not possible, butt welding is acceptable. Therefore, it is recommended to use butt welding flanges to improve the requirements for welding inspection.

Welding sockets are often used under high pressure due to their reinforcement effect, but socket welding also has drawbacks. Firstly, the stress state after welding is poor, making it difficult to completely melt. The trend is that there are gaps in pipeline systems, making them unsuitable for medium sensitive to crevice corrosion and pipeline systems with high cleanliness requirements; Use socket welding; There are also ultra-high pressure pipelines. Even in small diameter pipelines, there is a large wall thickness and socket welding can be avoided as much as possible through butt welding.

Techspecs

• Range of external diameter: 100 mm to 15000 mm

• 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；

• Stainess Steel： ASTM A182 F304、304L、 F316、316L、1Cr18Ni9Ti、0Cr18Ni9Ti、321、18-8；

• Alloy Steel： ASTM A182 F1、 F5a、 F9、 F11、 F12、 F22、 F91、A182F12、A182F11、16MnR、Cr5Mo、12Cr1MoV、15CrMo、12Cr2Mo1、A335P22、St45.8/Ⅲ；

• Delivery type: 30-60 days

Sealing of Socket welding flange

raised face (RF), concave convex face (MFM), tenon groove face (TG), ring connection face (RJ)

Applications of Socket welding flange

• Boiler pressure vessel 

• petroleum  

• chemical industry 

• shipbuilding  

• pharmacy 

• metallurgy  

• Mechanical and elbow stamping