Co***ny Profile We specialize in the production and study of S355/ Q345/ A500/ STKR490 welded steel pipe and seamless pipe, Square steel pipe, rectangular steel pipe, straight seam welded steel pipe, spiral welded pipe, we can supply the following specifications, standards, material steel: Square steel tube: 30 * 30-800 * 800mm ,wall thickness :3.0-30mm, rectangular steel tube: 50 * 30-800 * 300 ,wall thickness :3.0-30mm ERW Pipe: Φ48-1420mm ,wall thickness :2.5-60mm seamless steel pipe: Φ60-...
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