Anbao Hydraulic

  STKM13C Cylinder Tube is the standard carbon steel tubes for hydraulic cylinder purpose,After seamless cold drawing , the inner diameter is processed by high-precision boring, the inner tolerance can reach H7 H8, and the surface roughness is 0.2-0.4um. JIS STKM 13C cylinder tube and SAE 1020 aim at mechanical structural uses with similar but less working pressure than that of ST52 cylinder tube. However, such material is suitable for lathing and other further processing. ST52 and ST52.3 cylinder honed tubes are with good weld-ability, high yield strength to bear high pressure, and good impact resistance in low temperature.  If the working pressure is not high, STKM 13C honed tube is also a good choice, because the cost is relatively low than ST52. Advantages of Our STKM13C Cylinder Tube 1.High precision tolerances; Our STKM13C  honed tube can meet ID tolerance H7, H8, H9, … etc according to the customer’ requirements, and its I.D dimension. 2.Seamless tube with high pressure r

  4140 Round Steel Rod  is a Chromium-Molybdenum through-hardening steel rod of medium hardenability. It is a general purpose high-tensile steel with medium strength level and good impact properties. Hardness is another key mechanical property of 4140 steel affected by temperature. Typical hardness of hot rolled 4140 round steel bar is about 28-32 HRC at room temperature. However, as the temperature increases, the hardness of the steel decreases. At 200°C the hardness drops to about 25-28 HRC and at 400°C to about 22-25 HRC. If by Induction hardened , 4140 round steel bar can be surface hardened to 58HRC. Advantages Of Our 4140 Round Steel Rod and Chrome Rod Precision material parts strictly according to customer&request drawing,packing and quality request 2.Tolerance of 4140 chrome rod : can be kept in +/-0.01mm 3.The most advanced inspector to ensure the quality 4.Experienced technology engineers and well trained workers 5.Fast and timely delivery. Speedily &professional se