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 GB spiral steel pipe, the Ministry of Oil the standard SY/T5037 spiral steel pipe, 
 PE.2PE.3PE anti-corrosion steel pipe, epoxy anti-corrosion steel pipe, cement, pulp lining anti-corrosion steel pipe, oil and gas PP anticorrosive steel pipe Cangzhou spiral steel pipe anti-corrosion steel pipe, anti-corrosion steel pipe of large diameter American standard anti-corrosion steel pipe, water purification anti-corrosion steel pipe. The product raw material hot rolled steel strip, often warm spiral shape, welded by automatic submerged arc welding process, the product of API 
 SPEC 
 5L, EN10217, GB/T9711.1, GB/T9711.2 standard. Mainly used in petroleum, natural gas industry to transport flammable fluid and non-flammable fluid and steel structure. http://www.hbthgg.com 
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 Pump tube