Cangzhou Bohai Pipe Co., Ltd. specializes in producing steel elbow P91 alloy tube according to GB / T8162-87 provisions 4.1 specification: Hot tube diameter 32 ~ 630mm. Wall thickness 2.5 ~ 75mm. Cold-rolled (cold drawn) tube diameter 5 ~ 200mm. Wall thickness of 2.5 ~ 12mm. 4.2, the appearance of quality: internal and external surfaces of the steel pipe must not have cracks, folded, rolled off, separation, hairline and scarring defects. These defects should be completely removed selling steel elbow, the wall and not the outer diameter than the negative deviation after clearing. Cangzhou Bohai Pipe Co., Ltd. specializes in producing seamless steel elbow p22 and its different uses into the following varieties: GB / T8162-2008 (structure seamless steel pipes). Mainly used for general structure and mechanical structure. The representative of material (grade): Carbon steel 20,45 steel; steel Q345,20Cr, 40Cr, 20CrMo, 30-35CrMo, 42CrMo and so on. GB / T8163-2008 (transmission fluid with seamless steel tubes). The main pipeline for transporting fluid engineering and large-scale equipment. Representative material (grade) for 20, Q345 and so on. 16Mn steel-made steel elbow elbow, steel elbow, Ltd. Cangzhou Bohai Bohai Sea by Cangzhou tube. Cangzhou Bohai Tube Co., Ltd. (www.czbh628.com) (www.hbbh628.com) strong, credible, three-way, etc. Hebei Cangzhou accumulated a large number of loyal customers. The company better work attitude and constantly improving Cangzhou Bohai innovative ideas will lead into the brilliant and you work for a better future!