Place of Origin: Shandong, China Application: Hydraulic Cylinder Alloy Or Not: Non-Alloy Section Shape: Round Special Pipe: Hydraulic Cylinder Tube Outer Diameter: 30mm Thickness: 3 - 30 mm Standard: DIN2391, ASTM A106-2006 Certificate: ISO9001 Grade: DIN2391 St52 1.0580 Surface Treatment: Hydraulic Cylinder Tube Tolerance: +-0.2mm Processing Service: Cutting Oiled or Non-oiled: Slightly OiledInvoicing: by actual weight Delivery Time: 31-45 days Secondary Or Not: Non-secondary Keyword: Carbon Tube, Cold Drawn Tube, Cold Rolled Tube, Honed Tube Material: AISI1020, 1045, CK20, CK45, ST52, E355, SAE4130, SAE4140 Payment Terms: 30% TT prepayment, 70% before shipping Delivery Terms: FOB YANTAI, QINGDAO or other main port of China Certification: ISO9001:2015 Supply Ability: 500 Metric Ton/Metric Tons per Month on hydraulic cylinder tube Packaging Details: bundle with steel strips or as client's request Port: Yantai, Qingdao or other China main port1. How can I get a quotation from you ? You can leave us message, and we will reply every message in time. Or we may talk on line by Trademanager. And you can also find our contact information on contact page. 2.Can I get samples before order ? Yes, of course. Usually our samples are free. we can produce by your samples or technical drawings. We can build the molds and fixtures. 3. what is your delivery time ? The time of delivery is usually around 1 month(1*40FT as usual). We can send out in 2 days, if it has stock. 4.What is your payment terms? Our usual payment term is 30% deposite, and rest against B/L. L/C is also acceptatble.EXW,FOB,CFR,CIF,DDU. 5 How do you make our business long-term and good relationship? A:1. We keep good quality and competitive price to ensure our customers benefit ; 2. We respect every customer as our friend and we sincerely do business and make friends with them,? no matter where they come from. Please feel free to leave us message if you have any question about us and our products.1.Seamless steel tube, seamless pipe Widely used in the hydraulic cylinder of the heavy machinery, Cranes, excavator also forklifts. Material is various, mainly STKM-13CT, ST52, CK45 and AISI 1020. We can also offer as customized seamless steel tube. 2.cold drawn steel tube/cold rolled steel tube Grade: 20#  45#  16Mn  25Mn  27SiMn  E355  ST52 S45C STKM11A STKM13A Standard: GB/T8713  GB/T3639  DIN2391  EN10305  ASTMA519 Range: 30-300mm Length: 11m(max) The cold process can change the thickness of tube to meet client's request and offer better mechanical property. 3. Honed steel tube, honed tube, honed steel pipe ID Tolerance: H8  H9 ID Roughness: RA0.4micron(max) Length: 6m(max) Inner roughness: Ra0.2-0.8um Straightness: 1:1000 or customized This process can improve the roughness of the inner tube to 0.2-0.8um and make inside tube more smooth which can be used for cylinder directly.1. Free sample can be supplied 2. Trial order  is acceptable 3. Third party test is acceptable 4. Delivery time guarantee(1) No Oxidation Layer on the outer and inner walls; (2) No Leakage under high pressure; (3) No Crake under flating and flattening; (4) No distortion after cold bending; (5) High precision high cleanness; (6) Excellent brightness