seamless steel tube

seamless steel tube for hydraulic cylinder The mother hot rolled tube are supplied by chinese famous steel works such as shanghai Baosteel,Tianjin TPCO etc. We have two sets of cold drawing production line to manufacture cold drawn tube. Usually, we can manufacture about 2000 metric tons of cold drawn tube monthly. TECHNICAL DETAILS Steel Grade Chemical Composition% (max) Mechanical Properties (min) C Si Mn P S Yield Tensile Elongation Impact Test E 355 0.22 0.55 1.60 0.04 0.04 520 580 14% 27J (ST 52) N/mm2 N/mm2 (-20°C) Delivery condition BK+S (Stress Relieved). Impact test results of 27J based on standard 10 x 10mm specimen For sizes over 230mm OD we aim to supply impact results of 27J min. Actual results available on request. For sizes over 230mm OD with wall thickness greater than 16mm the yield will be 490 N/mm2 min. TOLERANCES Outside Diameter: BSEN10305-1 / DIN 2391 Bore: Generally H8 with surface finish max 0.4 microns Ra Inside Straightness: 1mm / 1000mm or better Eccentricity: OD ≤ 110mm max 5% of average wall OD > 110mm max 7.5% of average wall OD > 230mm max 10% of average wall SIZE RANGE Metric: 20 - 250 mm Bore (Other steel grade and delivery conditions are optional) Packing: steel strip bundle, knitting strip bundle or steel box. Protecting: Antirust oiled inside and outside surface, plastic caps in both ends. APPLICATION: HYDRAULIC CYLINDER