Structure and usage of Sprial Welded Steel Pipe

(1) the raw material is steel strip coil, wire, flux. Have to pass strict physical and chemical inspection before investment. (2) the strip head to tail docking, use single or double wire submerged arc welding, after rolled steel tube adopts automatic submerged arc welding repair welding. (4) on both sides of the electric contact pressure gauge control conveyor under the pressure of oil cylinder pressure, ensure the smooth delivery of strip steel. (5) the use of external control or internal control roll forming. Spiral steel pipe/spiral welded steel pipe/spiral steel pipe factory price (6) the weld gap control device to ensure that meet the requirements of welding seam clearance, pipe diameter, and quantity of the wrong side of weld gap are tightly controlled. (7) welding and welding are used within the United States Lincoln welding machine for single or double wire submerged arc welding, to obtain the stable welding specification. (8) after welding the weld passes the online continuous ultrasonic automatic meter check, ensure the spiral weld nondestructive testing coverage of 100%. If there are defects, automatic alarm and spray tags, production workers in accordance with the adjuster art parameters at any time, in a timely manner to eliminate defects. (9) by air plasma cutting machine to cut the steel tube into single. After cut into single pole (10), the head of every batch of structural steel pipe should be strict inspection system, can check weld mechanical properties, chemical composition, amalgamation, steel tube surface quality and the nondestructive flaw detection, ensure that qualified pipe process, can be formally put into production. (11) have continuous acoustic detection of weld mark parts, after manual ultrasonic and X-ray check, if there are defects, after repair, again through the nondestructive inspection, until defects have been eliminated. (12) strip steel butt weld and fellowship with spiral weld d joint in the tube, all pass X-ray films and television inspection of mild steel pipe.