One is that the steel plate used for plant materials is cut and rolled and welded to a plurality of roll tube support plates.
The other is to use pipe blanking and assembly welding process for forming. The specification is generally above 200mm. The ambient temperature should not be higher than 200, which can be produced by general enterprise construction personnel. High pressure elbow, high-quality low-carbon steel or forged alloy steel.
According to the connection structure of different pipes. Both ends of the elbow are machined into threads or grooves with high machining accuracy. The nozzle thread and flange thread are required to be closely connected, and the supporting enterprises can screw in freely without loosening. Petrochemical pipeline with pressure of 22.0 and 32.0 MPa, DN6200. General specification range.
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