You location: Home > Spiral steel pipe, welded steel pipe production process

Spiral steel pipe, welded steel pipe production process

spiral steel pipe

Is a strip coil as raw material , often warm extruded to automatic double -sided submerged arc welding process wire spiral welded steel pipe.

( A ) raw materials that strip , wire, flux . In the input before going through rigorous physical and chemical testing .

( 2 ) strip head and tail docking, a single or double wire submerged arc welding , in the rolled steel by automatic submerged arc welding .

( 3 ) before forming the strip after flattening, cutting , trimming, planing , surface transport and to the curved side .

( 4 ) use of electrical contacts control the conveyor cylinder pressure on both sides to ensure a smooth transfer strip .

( 5 ) with external control or internal control roll forming .

( 6 ) with gap control device to ensure that the weld gap to meet the welding requirements , diameter, volume and the wrong side of the weld gap have been strictly controlled.

( 7 ) , welding and soldering are used outside the United States Lincoln welding machine for single or double wire submerged arc welding , thereby obtaining a stable welding specifications.

( 8 ) After welding the weld line continuous ultrasonic injury checks to ensure 100% coverage of non-destructive testing of welds spiral . If defective, automatic alarm and spraying tags , production workers so adjusting the process parameters, and remove defects.

( 9 ) using air plasma cutting machine to cut the pipes into a single root.

( 10 ) into a single steel pipe , steel head three each batch to be strict inspection system to check the weld mechanical properties, chemical composition, fusion status , steel surface quality and after NDT inspection, to ensure that the pipe process after passing formally put into production.

( 11 ) there is a continuous sonic weld inspection mark on the site , manual ultrasonic and X-ray review, if there are defects after repair again after destructive testing, until the confirmation of the defect has been eliminated.

上一篇：ASTM Grades:ASTM pipes,pipe fittings,flanges we products

下一篇：Seamless And Welded Carbon Steel Pipe Data Diameter Toleranc