09-20-2010, 06:00 AM
Spiral steel coil steel strip as raw materials are often warm extrusion molding, to automatically double-wire submerged arc welding process double-sided spiral welded pipe joints.
(1) volume of raw materials that strip, wire, flux. Before we put into rigorous physical and chemical testing. (2) strip head and tail docking, a single wire or double wire submerged arc welding, in the rolled steel after the introduction of automatic submerged arc welding repair welding. (3) before molding, strip after flattening, cutting edge, edge planing, surface transport and to the bending edge cleaning processing. (4) with electrical contacts on both sides of pressure control conveyor cylinder pressure to ensure the smooth delivery of strip steel. (5) by external control or internal control roller molding. (6) by welding gap control device to ensure the weld gap to meet the welding requirements, diameter, misalignment and weld gap have been strictly controlled. (7) in welding and welding are used outside the Lincoln welding machine for single or double-wire submerged arc welding wire, welding specification to be stable. (8) End of the seam welding have been injured on-line continuous automatic ultrasonic inspection apparatus, ensuring 100% coverage of spiral weld NDT. If defective, automatic alarm and spray tags, production workers and so at any time to adjust process parameters, time to eliminate defects. (9) using air plasma cutting machine to cut a single tube. (10) cut into a single tube after the first three to each batch of steel the first rigorous test system, check the weld mechanical properties, chemical composition, fusion state and the surface quality as well as through non-destructive testing inspection process to ensure that the tube qualified before they can formally put into production. (11) have a continuous weld mark the site of acoustic flaw detection, ultrasonic and X-ray after manual review, if there are defects, after repaired through non-destructive testing again until the defects have been identified to eliminate. (12) strip and spiral welded seam weld and the intersection of D-type connector where the tube, all through the X-ray television or film examination. (13) of each pipe after hydrostatic test, pressure radial seal. Test pressure and time by computer testing equipment steel pressure tightly controlled. Test parameters automatically print records. (14) pipe end machining, to face the vertical degrees of slope mouth and blunt edges are accurately controlled.
Spiral Pipe : http://www.zgggxxg.com/
Conveyance of fluids under pressure spiral submerged arc welded pipe SY5036-83 is mainly used for transportation of oil, natural gas pipelines; pressure liquid delivery Spiral Welded Steel Pipe SY5038-83, high frequency welding of lap welding method, using pressure fluid transfer in the spiral seam high frequency welded steel pipe. Strong pressure steel pipe, plastic, and easy welding and metal forming; general low pressure liquid delivery Spiral Welded Pipe SY5037-83, using double-sided automatic submerged arc welding or welding into the legal system for water, gas, air and steam and other general low pressure liquid delivery pipe submerged arc spiral steel pipe commonly used criteria are generally divided into: SY/T5037-2000 (Ministry standard, also known as general fluid pipes with spiral submerged arc welded pipe), GB/T9711 .1-1997 (GB, also known as oil and natural gas industries Steel pipe delivery conditions Part I: A grade steel (to the current demanding a GB/T9711.2 B grade steel)), API-5L (American Petroleum Institute, also known as line pipe; which is divided into two levels PSL1 and PSL2), SY/T5040-92 (spiral submerged arc welded steel pipe pile with a
(1) volume of raw materials that strip, wire, flux. Before we put into rigorous physical and chemical testing. (2) strip head and tail docking, a single wire or double wire submerged arc welding, in the rolled steel after the introduction of automatic submerged arc welding repair welding. (3) before molding, strip after flattening, cutting edge, edge planing, surface transport and to the bending edge cleaning processing. (4) with electrical contacts on both sides of pressure control conveyor cylinder pressure to ensure the smooth delivery of strip steel. (5) by external control or internal control roller molding. (6) by welding gap control device to ensure the weld gap to meet the welding requirements, diameter, misalignment and weld gap have been strictly controlled. (7) in welding and welding are used outside the Lincoln welding machine for single or double-wire submerged arc welding wire, welding specification to be stable. (8) End of the seam welding have been injured on-line continuous automatic ultrasonic inspection apparatus, ensuring 100% coverage of spiral weld NDT. If defective, automatic alarm and spray tags, production workers and so at any time to adjust process parameters, time to eliminate defects. (9) using air plasma cutting machine to cut a single tube. (10) cut into a single tube after the first three to each batch of steel the first rigorous test system, check the weld mechanical properties, chemical composition, fusion state and the surface quality as well as through non-destructive testing inspection process to ensure that the tube qualified before they can formally put into production. (11) have a continuous weld mark the site of acoustic flaw detection, ultrasonic and X-ray after manual review, if there are defects, after repaired through non-destructive testing again until the defects have been identified to eliminate. (12) strip and spiral welded seam weld and the intersection of D-type connector where the tube, all through the X-ray television or film examination. (13) of each pipe after hydrostatic test, pressure radial seal. Test pressure and time by computer testing equipment steel pressure tightly controlled. Test parameters automatically print records. (14) pipe end machining, to face the vertical degrees of slope mouth and blunt edges are accurately controlled.
Spiral Pipe : http://www.zgggxxg.com/
Conveyance of fluids under pressure spiral submerged arc welded pipe SY5036-83 is mainly used for transportation of oil, natural gas pipelines; pressure liquid delivery Spiral Welded Steel Pipe SY5038-83, high frequency welding of lap welding method, using pressure fluid transfer in the spiral seam high frequency welded steel pipe. Strong pressure steel pipe, plastic, and easy welding and metal forming; general low pressure liquid delivery Spiral Welded Pipe SY5037-83, using double-sided automatic submerged arc welding or welding into the legal system for water, gas, air and steam and other general low pressure liquid delivery pipe submerged arc spiral steel pipe commonly used criteria are generally divided into: SY/T5037-2000 (Ministry standard, also known as general fluid pipes with spiral submerged arc welded pipe), GB/T9711 .1-1997 (GB, also known as oil and natural gas industries Steel pipe delivery conditions Part I: A grade steel (to the current demanding a GB/T9711.2 B grade steel)), API-5L (American Petroleum Institute, also known as line pipe; which is divided into two levels PSL1 and PSL2), SY/T5040-92 (spiral submerged arc welded steel pipe pile with a