Duplex Steel S31803 Weld Neck Flanges

Standard and classification of butt welding flange:

Common production standards: Ministry of Chemical Industry standards HG/T20592-2009, HG/T20615-2009, National standards GB/T9115.1-2000, GB/T9115.2-2000, GB/T9115.3-2000, GB/T9115.4-2000, Ministry of Machinery standards JB/ T862-94, Marine Standard CB/T47-1999

Butt welding flange includes many types and models. Butt welding steel flange is used for butt welding of flange and pipe. It is mainly used in welding technology. Need to determine according to the specific situation, to ensure the specific use value and performance of butt welding flange, withstand high temperature and high pressure.

Purpose of butt welding flange:
The welding flange has a wide range of uses, and the range of use is determined according to different characteristics. It is mainly used in the case of moderate medium conditions, such as low pressure unpurified compressed air and low pressure circulating water. Its advantage is that the price is cheaper. 

Suitable for steel pipe connection with nominal pressure no more than 2.5MPa, the sealing surface of butt welded flange can be made of smooth, concave and convex and tenon type three. The application of smooth butt welding flange is large, and the other two ways of butt welding flange is also relatively common in use.
 

Parameter (Specification) of Duplex Steel S31803 Weld Neck Flanges 

Duplex Steel S31803 Weld Neck Flanges  Product advantage