Tested by hydraulic pressure pipe steel pipe specification selection, or ultrasonic, eddy current, magnetic flux leakage detection. Therefore. Should not be used fluid seamless steel pipe. Seamless steel pipe diameter, wall thickness, thick-walled seamless steel pipe is mainly used for machining, coal, hydraulic steel, and other purposes. Thick-walled seamless steel pipe material is divided into 10 # 20 # 35 # 45 # 16Mn27SiMn12Cr1MoV10CrMo91015CrMo35CrMo and so on. This specification is applicable to the general structure, mechanical structure with seamless steel tubes, structural tubes. Fluid seamless steel pipe specification applies to conveying fluids generally seamless. Liaocheng Di Vietnam Steel Tube Co., Ltd. supply structure seamless steel pipe. Main difference is that the fluid structure seamless steel pipe seamless steel pipe by the root