Hydraulic Oil cylinder Seamless Carbon and Alloy Steel Mechanical Tubing ASTM A519 ASTM A519 Oil cylinder Seamless Carbon and Alloy Steel Mechanical Tubing China Precision Steel Tube leading supplier, choose the high quality Hydraulic Precision Steel Tube, Precision Carbon Steel Tube, Precision Seamless Steel Tube, CDS Steel Tube, CDW Steel Tube Torich Cylinder tubing O.D. size range: 50-350mm W.T.:0.5-35mm Length:Fixed length,random length,as per requests max size is 12000mm Precision steel tube is using material: SAE1010,SAE1020,SAE1026,SAE4130,SAE4140 Production Method: Cold drawing or cold rolling Grade and Chemical Composition ( % ) Grade C Mn P≤ S≤ Si Cr Mo 1008 ≤ 0.10 0.30-0.50…