Wuxi YUTONG

Hard chrome plating  is likely the least understood of these three chroming processes. Hard chrome plating involves heavy coatings of chromium in order to provide wear resistance, oil retention and lubricity. It is not decorative and is instead used to add durability to such things as piston rings,  hydraulic cylinder rods , thread guides and molds. It derives its name from its measurable thickness and is normally applied to steel substrates. While it is metallic and shiny, it is not a decorative finish. Hard chrome plating is a good option for wheels or bumpers. Nickel chrome plating also called decorative chrome plating, nickel-chrome plating involves electroplating a thin layer of nickel onto the item before the chrome layer is plated onto it. The layer of nickel adds smoothness, reflectivity and corrosion resistance. The chrome layer that is applied on top of it is very thin, measuring in the millionths of an inch. The appearance of decorative chrome primarily comes from the nickel

ST52 steel  come under the DIN 2391 specification, it belongs to a standard structural steel grade..  ST52 grade steel is a readily weldable low carbon manganese steel with good impact resistance.  The steel has excellent weldability and machinability that is similar to mild grades of steel. The steel modules are commonly seen in the construction of bridges, buildings, general engineering, etc. And it works well in extreme and cryogenic temperatures. The steel has good impact resistance and is commonly supplied in the standard normalized condition.  ST52 Steel Chemical Properities Standard Grade C Si Mn P max S max DIN2391 St52 ≤0.22 ≤0.55 ≤1.6 0.025 0.025 Yield Strength 520 Mpa Min. Tensile Strength 600 Mpa Min. Elongation 14% Min. DIN2391 ST52 Steel also has widely application in hydraulic industry,like we usually use ST52 steel to produce  cylinder honed barrel  and   precision cold drawn tubes ,  ST52 honed tube  can withstand extreme working pressures and temperatures.As a profess

  Stainless steel cylinder rods  are precision machined from 303/304 stainless steel to provide excellent performance even in harsh environments. Common applications include food processing, chemical, medical, pharmaceutical and other corrosive environments. Piston rods are  hard chrome plated , ground and polished stainless steel. 316 stainless steel is available as an option. Stainless steel multi-stage and triple rod cylinders are available. Stainless steel piston rod  has high corrosion resistance, strength and wear resistance to keep high-efficiency operation. It can be applied to the circumstances subject to oxidization. Specifications of Stainless Steel Cylinder Rod a. Material: 304 stainless steel, 316 stainless steel b. Outside diameter tolerance: f7 - f8 (other tolerances can be custom-made) c. Surface roughness: Ra0.2-0.4 d. Hard chromium thickness: 0.015 - 0.025 mm e. Surface hardness: HV700-1150 f. Straightness: 0.05 - 0.10 m/m g. Standard length: 1- 6 m   Wuxi YUTONG  has

  ISO   h8 honed tube   also can be called h8 cylinder tube/ cylinder barrel . It is manufactured by   precision seamless tube   with very tight tolerances, fully prepared for use in hydraulic and pneumatic cylinders.The ST52 steel used in this tube is E 355 according to EN 10305-1.This type of tube is used in hydraulic and pneumatic circuits, the H8 tolerance both in diameter and roughness allow them to be ready-to-use tubes. CHEMICAL COMPOSITION STEEL GRADES NORM C % max. P % max. S % max. Mn % Si % max. E-355 EN-10305-1 0,22 0,025 0,025 1,6 0,55 MECHANICAL PROPERTIES STEEL GRADES NORM Rm min. (N/mm2) Re min. (N/mm2) A min.% Supply Conditions E-355 EN-10305-1 580 450 10 SR As one of the leading h8 honed tube suppliers and manufacturers, Wuxi YUTONG  has been supplying and exporting  St52 honed tube  and  cylinder barrel for almost 20 years. We produce honed steel tubes and  skived roller burnished tubes  used for hydraulic cylinder or pneumatic cylinder with high quality & good p

  The process of   induction hardened bar   can enhance the mechanical properties of ferrous and alloy components in a specific part. Typically, the material of doing induction hardening includes  CK45 , 20MnV6,  4140  and 4340. First, the piston rod will be put into a copper coil, and it’s heated by alternating current. Then, the outer surface of the  cylinder piston rod  will be heated to a temperature above the transformation range. After that, the piston rod will be tempered immediately to adjust the hardness level.  The final surface hardness of the induction hardened rod will be HRC 55° ± 2°. The chrome layer hardness is 850 HV0.1. The surface hardness in the induction hardened zone immediately beneath the chrome layer is 55 HRC min. The depth of hardening is between 1.0 and 3.0 mm depending on dimension. As a professional  chrome plated bar  supplier, manufacturer,exporter in China,  Wuxi YUTONG  has more than 20 years production experience, we sell hydraulic hard chrome bar,har