Supply welded steel pipe, straight seam welded steel pipe, Q345B straight seam welded steel pipe factory straight seam steel pipe manufacturing factory is a scale model of the northern region, the company has a world-class straight seam steel pipe production, testing and inspection equipment, pipe joints straight annual production capacity 40 tons, straight seam pipe size 1/4 inch to 20-inch (outer diameter Φ57mm to Φ660mm), wall thickness 3mm ~ 22mm ERW ,325-1620mm, submerged arc welding straight seam steel pipe wall thickness of 8 ~ 88mm straight seam steel pipe in accordance with the national standard GB/T3091-2001 GB/T13793-92, GB/T6728-2002 organization the production; welding thick-walled volumes pipe 400-4000 * 8-125mm product sales throughout the country and in South Asia, The products are mainly used large span Wangjiagongcheng, water gas pipelines, construction, electrical engineering, mechanical, bridge beams, steel structure, foundation piling and other supporting facilities. My company "in good faith principle, the quality of survival, to the credibility of development", welcome new and old customers coming in contact.