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TP 321 stainless steel welded pipe
Features of TP 321 stainless steel welded pipe:
High temperature resistance: TP 321 stainless steel welded pipe can still maintain good mechanical properties and corrosion resistance at high temperature, suitable for high temperature applications.
Welding performance: TP 321 stainless steel welded pipe has good welding performance, suitable for various welding processes, such as TIG (tungsten pole argon arc welding) and MIG (metal inert gas protection welding).
Corrosion resistance: in a variety of corrosive media, such as acid, alkali, salt, etc., TP 321 stainless steel welded pipe shows good corrosion resistance.
Production Engineering
Raw material preparation
Use TP 321 stainless steel sheet or strip meeting ASTM A213 standard as raw material.
Shear and edge preparation
Sile plates or strips to appropriate sizes and process edges to ensure accurate docking during welding.
Roll
The cut plate or strip roll into a tube.
Welding
Weld the edges of tubes using welding techniques such as TIG or MIG.
Heat treatment
After the welding is completed, the welded pipe is fixed by heat treatment to restore the corrosion resistance and mechanical properties of the material.
Straighten and cut
Straighten and cut the welded pipe to achieve the desired size and shape.
NDT
Conduct nondestructive testing such as ultrasonic testing or radiographic testing to ensure that the welded pipe is free of defects.
Surface treatment
Surface-treat the welded pipes, such as pickling, passivation or polishing, to improve their corrosion resistance and aesthetics.
Inspection and testing
Final inspection and testing of welded pipes, including dimensional inspection, pressure test and chemical composition analysis.
Packaging and transportation
Qualified welded pipes are properly packed and ready for shipment.
Throughout the production process, manufacturers need to strictly comply with the relevant international and domestic standards, such as ASTM A213, ASTM A312, to ensure product quality.
