Hydraulic and pneumatic cylinder with precision internal diameter of large diameter Rectangular Pipe (GB8713-88) is the manufacture of hydraulic and pneumatic cylinder with drawn or cold rolled precision diameter size with precision large diameter square and rectangular tube. On the weight of the table-side management. Cold drawn or cold rolled precision large diameter Rectangular Pipe (GB3639-2000) is used for mechanical structure with high dimensional accuracy, hydraulic equipment and good surface finish of cold-drawn or cold rolled precision large diameter square and rectangular tube. Hebei square tube. Use precision large diameter Rectangular Pipe manufacturing mechanical structure or hydraulic equipment, can greatly reduce machining time, improve material utilization, and help to improve product quality. Galvanized square tube. Rectangular Pipe divided by the production process: hot-rolled seamless pipe, cold drawn seamless pipe, extruded seamless pipe, welded square tube. Welded square tube which is divided into: (a) according to process sub - arc welding pipe, ERW square tube (high frequency, low frequency), welding pipe, square tube furnace brazed (b) by weld points - straight seam welded pipe, spiral welded square tube Rectangular Pipe divided by the production process: hot-rolled seamless pipe, cold drawn seamless pipe, extruded seamless pipe, welded square tube. Welded square tube which is divided into: (a) according to process sub - arc welding pipe, ERW square tube (high frequency, low frequency), welding pipe, square tube furnace brazed (b) by weld points - straight seam welded pipe, spiral welded pipe Hebei square tube, accessible Steel Union, stainless steel pipe from the Tianjin Steel Trade Co., Ltd. Mastery. Hebei square tube, around the steel joint, stainless steel pipe is accessible Tianjin Steel Union Co., Ltd. (www.tjtdgl.com) (www.tdglgt.com) this year introduced a new upgrade, the above picture is for reference only, please dial this page Phone or pictures on obtain the latest information, contact: Yanjing Li.