Straight seam steel pipe for drainage in straight seam steel pipe drainage pipe Shandong drainage pipe 
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 Process process. This is an important feature of the spiral welded pipe production distinguish it from welded pipe production. 
 Spiral welded pipe, spiral steel pipe, welded steel pipe manufacturer. Production: spiral welded steel pipe, spiral submerged arc welded pipe, dredge pipe, steel pipe, seamless tube, thermal expansion, spiral steel pipe, spiral welded pipe, straight seam pipe, elbow flanges, spiral welded steel pipe welding the pipe volume, T-shaped pipe, pressure pipe, water pipe, straight seam steel pipe, hot-rolled steel, billboards with steel pipes, municipal water supply pipe. The factory has five double-sided submerged arc spiral pipe production line, produce processing-diameter 219-3020mm, wall thickness 4-30mm spiral welded pipe of a variety of materials. U.S. Lincoln welder line of automatic two-sided submerged arc welding products, the implementation the standard SY/T5037-2000 of oil and gas industry, SY/5040-92 the, GB/T9711.1-97 production, the company based on quality, the full implementation of quality management . Passed the ISO9002 quality management system certification, and passed the ISO9001-2000 quality management system certification. And is equipped with X-ray, ultrasonic and hydrostatic pressure across the board automatically detect. This product is widely used in the field of water engineering, petrochemical industry, hydroelectric power industry, agriculture, irrigation and urban construction. The transport of liquids: water supply, drainage; gas transportation: gas, steam, liquefied petroleum gas; for structure: for piling pipe, as pillars, piers, roads, building structures tube. Spiral steel pipe material: Q235 according to customer needs-demand material. Standard basis of the spiral pipe: SY/T5037 standard production and testing. 
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 Hebei Tian Hui Steel Pipe Company mainly produces for central heating, water supply, sewage treatment, petroleum, natural gas, gas transmission projects in low-pressure fluid conveying pipe with the steel pipe. Product specifications 219mm-3200mm, wall thickness 5mm-20mm, steel grade B-X70, the annual output of 150,000 tons, with advanced production equipment, perfect testing means, strong technical force, our products sales in the market high innovation, product users get the praise. The company passed the ISO9001 international quality management system certification, and special equipment manufacturing license of the People's Republic of China and the import and export permits, many times by the provincial, city and county departments of recognition awards.