Large diameter spiral welded pipe spiral steel pipe spiral steel pipe pile with spiral steel pipe Hebei Steel Pipe Manufacturing Co., Ltd. 13703275487/QQ308969729/0317-5128266 ten billion production of spiral steel pipe, pressure fluid transport spiral submerged arc welded steel pipe (SY5036-83) is mainly used in the transportation of oil, natural gas pipelines; pressure fluid transmission high-frequency welded spiral seam steel pipe (SY5038-83), lap welding method with high-frequency welding, pressure fluid delivery for high-frequency welded spiral seam steel pipe. Steel pressure ability, good plasticity, easy welding and forming process; generally low pressure liquid delivery spiral submerged arc welded pipe (SY5037-83), using double-sided automatic submerged arc welding or welding into the legal system for water, gas, air and steam is generally low pressure liquid delivery such as submerged arc welding steel pipes. Spiral Pipe of common standards now generally divided into: SY/T5037-2000 (Ministry of 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 Technical delivery conditions for steel Part: A grade steel (to the current demanding a GB/T9711.2 B grade steel)), API-5L (American Petroleum Institute, also known as line pipe; PSL1 and PSL2 which is divided into two level), SY/T5040-92 (spiral submerged arc welded steel pipe pile with) ten billion company is willing to cooperate sincerely with all levels of users, welcome.