We focus on the production of 27SiMn steel tube for making mining hydraulic prop cylinder. Changzhou Tent Hydraulic Machinery Co., Ltd. are specialised in precision machining and hydrauilc technology.And in 2003,we applied the ISO1999:2000 certificate.Since established in 2000,We developed from one workshop into 3 branch factories.Employee number become from 20 to 300.Among of them, 10 people have 20 year experience in designing and manufacturing of hydraulic cylinder and machine .We have Research and Design Center,Technical Department, QC Department, Logistic Department,International Marketing Department,Domestic Marketing Department.There are many advanced machining tools and checking tools.All the workers are trained in professional university . Now we have three main production fields.Hydraulic Machinery ,Hydraulic cylinder,Precision steel tube. 1.Machinery Factory We can design and manufacture the following machine: A: hydraulic cold draw bench for making precision steel pipe,special tube,copper strip ,copper busbar,copper tube. Drawing force from 50tons to 2000 tons B:hydraulic press straightening machine C: Roller pointing machine D: Hydraulic Press E: Cylindrical Grinding Machine F: Horizontal Honing Machine G: Deep hole boring machine Our technical engineers have great experience in Hydraulic Cold Draw technology. We not only sell our machines to our customer but also we can provide our customers with a complete production line and help them to train the workers . Our hydrauic cold draw bench occupied 70% of domestic market.We have exported many sets of hydraulic cold draw bench to many India copper production companies. 2.Hydraulic Cylinder Factory. We have advanced machine tools to meet any machining requirements . Machine Range: Drilling : Max ID 400mm Turing: Max OD 2000mm,Max Length 20 000mm Deep hole boring: Max ID 1000,Max stroke 20 000mm Honing: Max ID 1000,Max Stroke 20 000mm Welding: Arc Welding,TIG welding,Mig Welding,Flux Cored Welding,Stick Welding,SAW,Resistance Welding ,Electron Beam Welding,Robotic Welding,Brazing & Soldering. We have experts to witness the welding procedure. Our hydraulic cylinder are used widely in different field such as Mobile Crane,Lifting platform,Steel Works, Offshore working platform.Hydraulic press. OEM are welcome! We have been cooperating with many famous company from Japan, USA,Finland,Germany. 3. cold drawn presion steel pipe and tube factory; We have two production lines to produce cold draw tube and about 60 sets of honing machine to make honed tube. Production line A: ID from 20 to 250mm, Max finished product's length: 9.5meters Production line B: ID from 40 to 406mm, Max finished product's Length:14.5meters Complete producing equipment,Professional manufacturing , Strict Quality Control. We promise our products can meet the specification stated in the purchasing order or Contract from our customers. We can produce 2000 metric tons of cold drawn tube, 1000 metric tons of honed tube every month. And we have an individual work shope to produce chrome plated rod. Rod range from 10mm to 400mm, Max Length :20meters. Our preicison tube are popular not only in domestic market but also in overseas market.We have stable sales agent in Shanghai,India,Finland, Italy ,Singapore,Vietnam. Any technical question,you are welcome to give us inquiry.We have individual pre-sales,after-sales team to meet any demands from our customers. We do our best to give our customers high quality products ,best services,and complete technology consultant. Welcome to Tent, once cooperation, friend forever!
cold drawn pipe for hydraulic cylinderThe 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 DETAILSSteel Grade Chemical Composition% (max) Mechanical Properties (min)C Si Mn P S Yield Tensile Elongation Impact TestE 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 specimenFor 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.TOLERANCESOutside Diameter: BSEN10305-1 / DIN 2391Bore: Generally H8 with surface finish max 0.4 microns RaInside Straightness: 1mm / 1000mm or betterEccentricity: OD ≤ 110mm max 5% of average wallOD > 110mm max 7.5% of average wallOD > 230mm max 10% of average wallSIZE RANGEMetric: 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
27SiMn steel tube
