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High-Quality Seamless Carbon and Alloy Steel Pipes for Industrial Use1
Steel ProductsPremium Steel PipeSeamless Alloy Pipe
Fujian Bluesky Pipe Manufacturing Co., Ltd.
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Product Description Cold rolled seamless pipe is a precision seamless steel pipe with high dimensional accuracy and good surface smoothness, used for mechanical structures and hydraulic equipment.Cold rolling has higher dimensional accuracy than hot rolling. Advantages: Fast molding speed, high output, and no damage to the coating. It can be made into a variety of cross-sectional forms to meet the needs of usage conditions; Cold rolling can cause significant plastic deformation in steel, thereby increasing its yield point. The promotion and application of high-precision cold-rolled precision steel pipes can save steel, improve processing efficiency, and save energy. The so-called high-precision cold-rolled seamless steel pipes refer to strict inner and outer diameter dimensional accuracy (tolerance range), good inner and outer surface smoothness, roundness, and straightness, which can greatly save machining hours, improve material utilization, and also help improve product quality. This product has a wide range of uses, mostly for automotive parts, motorcycle parts, and hydraulic engineering machinery Size tolerance ODStandard toleranceSpecial toleranceOuter DiameterGB/T3639DIN2391EN10305O Dthickness4mm-20mm±0.10 mm±0.08 mm±0.08 mm±0.05mm±0.05mm20mm-30mm±0.10 mm±0.08 mm±0.08 mm±0.08 mm±0.08 mm31mm-40mm±0.15 mm±0.15 mm±0.15 mm±0.10 mm±0.08 mm41mm-60mm±0.20 mm±0.20 mm±0.20 mm±0.15 mm±0.15 mm61mm-80mm±0.30 mm±0.30 mm±0.30 mm±0.20 mm±0.20 mm81mm-120mm±0.45 mm±0.40 mm±0.40 mm±0.30 mm±0.30 mmEquivalent Material referance:GBTOCTASTMBSJISNFDIN10F 1010040A10 XC10 101010,101,012045M10S10CXC10C10,CK1020201020050A20S20CXC18C22,CK2245451045080M46S45CXC45C45,CK4530CrMo30XM41301717COS110SCM42030CD4 42CrMo 4140708A42 42CD442CrMo4 708M40 35CrMo35XM4135708A37SCM335CD434CrMo4Material10#-45#, 16Mn, A53-A369, Cr-Mo alloy, Q195-Q345, ST35-ST52, 10#, 20#, 45#, 16Mn, A213, A315, 30CrMo, Q195, Q215, Q235, Q345, ST35, St37, St45, St52SurfaceBlack/ BrightStandardDIN, GB, JIS, DIN 17175, DIN 2391, GB 5310-1995, GB/T 13793-1992, GB/T 3094- 2000, GB/T 8163-1999, JIS G3101SizeOD 15mm-70mmThickness 1-12mmProcessingCold rolled/ Cold drawn1. BK (+C) No heat treatment after last cold forming process.2. BKW (+LC) After last heat treatment there is a light finishing pass ( cold drawing)3. BKS (+SR) After the final cold forming process the tubes are stress relieve annealed.4. GBK (+A) After the final cold forming process the tubes are annealed in a controlled atmosphere.5. NBK (+N) After the final cold forming process the tubes are annealed above the upper transformation point in a controlled atmosphere.PackingWoven bag/ Wooden or crate carton/ Bundle Packing/ Plain end or vanished as per customer's request.Delivery timeNormally 20-30 working days
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