630 piling pipe diameter piling pipe piling 630 spiral www.naimoguanjian.com www.thgangguan.com 
 Ease of welding and molding process; low pressure fluid transmission spiral submerged arc welded steel pipe (SY5037-83), using double-sided automatic submerged arc welding or single-sided welding into the legal system for low pressure fluid such as water, gas, air and steam conveyance of submerged arc welded pipe. The commonly used standard spiral is generally divided into: SY/T5037-2000 (department standard, also known as 
 Common fluid pipeline with spiral submerged arc welded pipe), GB/T9711.1-1997 (GB, also known as the Petroleum and natural gas industries - Steel pipe for pipelines - Technical delivery conditions: Pipes of requirement class A (to currently requires strict GB/T9711 .2 
 Pipes of requirement class B)), API-5L (American Petroleum Institute, also known as line pipe; divided into PSL1 and PSL2 two levels), SY/T5040-92 (pile with spiral spiral submerged arc welded pipe) material: Q235A , 

 Spiral Pipe Spiral Pipe pump tube fabric machine pvdf tube 

 Q23b, 0Cr13, 1Cr17, 00Cr19Ni11, 1Cr18Ni9, 0Cr18Ni11Nb. Q345 L245 L290 
 X42 X46 X70 X80 X95 
 Spiral welded spiral welded pipe: low-carbon carbon structural steel or low alloy steel strip according to the angle of the spiral line (called the forming angle) rolled into the tube, and then the tube welded together made, it can be used more The narrow strip production of large diameter steel pipe. Spiral welded pipe for oil and gas pipelines, its specifications OD * wall thickness. Spiral welded side welding and double-sided welding, the pipe should ensure that the hydrostatic test, the weld tensile strength and cold bending performance to meet the requirements. Integrity is life. Customer satisfaction is our eternal pursuit. The company is committed to: the same quality, lowest price, homegrown, and ensure credibility. Sincerely look forward to cooperation with friends from all walks of life.