What should non-standard stainless steel flange notice?

According to the requirements of the project, non-standard stainless steel flange also occupies a part of the proportion in the flange type, non-standard stainless steel flange should pay attention to:

In order to prevent intergranular corrosion caused by the heating of flange cover,the welding current should not be too large,about 20% less than the carbon steel electrode,the arc should not be too long, the layer between the rapid cooling, narrow welding path is appropriate.  

During the welding of stainless steel non-standard flange pipe fitting,carbide will be precipitated by repeated heating,which will reduce the corrosion resistance and mechanical properties.

ASTM A182 F304 SCH40SxSCH10S flangeolet

ASTM A182 F304 SCH40SxSCH10S flangeolet

 

Stainless steel non-standard flange,in order to improve corrosion resistance and weldability and appropriately increase the amount of stability elements Ti, Nb, Mo, etc.,weldability is better than chromium stainless steel non-standard flange. When using the same type of chromium stainless steel non-standard flange electrode (G302, G307),should be more than 200℃ preheating and welding after about 800℃ tempering treatment. If the welding part cannot be heat treated, the welding rod (A107, A207) of stainless steel non-standard flange pipe fitting should be selected. 

Stainless steel SS316 weld neck flanges and slip on flanges

Stainless steel SS316 weld neck flanges and slip on flanges

Stainless steel non-standard flange, butt welding flange electrode has good corrosion resistance and oxidation resistance, widely used in chemical, fertilizer, petroleum, medical machinery manufacturing.

Haihao Group can manufacture non-standard stainless steel flanges according to drawings according to customers’ needs.Welcome customers to communicate.Email:sales@haihaogroup.com

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