Shijiazhuang precision seamless steel pipe distributor of precision seamless steel pipe is a high precision cold drawn or hot-rolled after a steel pipe. Oxide layer precision seamless steel tubes, seamless precision steel inner and outer walls to withstand high pressure without leakage, high-precision, high-quality finish, cold bending deformation, flaring, flattening cracks, etc., so mainly used in the production of pneumatic or hydraulic components products, such as cylinder or cylinders, are seamless. Precision seamless steel chemical composition of the C, carbon, silicon of Si, manganese Mn, sulfur S, phosphorus P, Chromium Cr. The difference between precision steel pipe and seamless steel pipe 
 1, the main features of the seamless steel pipe is welded seam, and can withstand greater pressure. Products can be very rough cast or cold call. 
 2, precision steel pipe products in recent years, mainly within the hole, the outer wall of tighter tolerances and roughness size. 
 Cold drawn precision steel tubes of the characteristics of 
 (1) the outer diameter is smaller. 
 (2) high precision can do small batch production. 
 (3) high precision cold drawn finished, good surface quality. 
 4 steel pipe cross area is more complex. 
 5 steel pipe superior performance, the metal is relatively dense. 
 Implementation of standards GB/T3639 GB/T8713 DIN2391-2 HK15-2000 use for the manufacture of the mechanical structure, hydraulic equipment, auto parts