JIS B2220 SOH FLANGE tells you that the welding form of plate-type flat welding flange is to insert the pipe into the flange to weld.
Scope of application
JIS B2220 SOH FLANGE tells you that due to its good comprehensive performance, the plate-type flat welding flange is widely used in the chemical industry, construction, water supply, drainage, petroleum, light and heavy industry, refrigeration, sanitation, plumbing, fire protection, electric power, aerospace, shipbuilding, and other basic engineering.

JIS B2220 SOH FLANGE tells you that the plate-type flat welding flange is easy to obtain, simple to manufacture, low cost, and widely used; however, the rigidity is poor, so it should not be used in chemical processes that require supply and demand, flammability, explosion, and high vacuum degree Piping systems and high, extremely hazardous locations. The sealing surface types are flat and raised.
The above information is the JIS B2220 SOH FLANGE manufacturer's introduction and analysis of the SOH FLANGE, hope it helps you.