Datong Hydraulic

    Seamless Precision Steel Tubes  come under AISI, DIN, EN, GB and other international standard specifications. they range from 4mm to 219mm in outer diameter with wall thicknesses ranging from 0.5mm to 20mm.  ST37-2  Seamless tubes are frequently used for high heat and pressure applications in oil and gas( high pressure oil pipes ) petrochemical, hydraulic cylinders & pneumatic cylinder,mechanical and Automotive engineering petroleum, and other industries. They come in various sizes and forms, including round, square, and U-shaped. Furthermore, these stainless steel tubes’ strength and corrosion resistance are well known. They are frequently produced with a seamless finish and can be used in many different sectors. ST37-2 is one of the best choices among the various types of steel tubes for low-cost, low-corrosion pipes. It has muscular tensile and yield strength and may be formed into round, square, or oval tubes. These stainless steel tubes’ ability to ...

  Hard Chrome plating is a cornerstone of ​hydraulic cylinder maintenance​ due to its exceptional hardness and corrosion resistance. A properly applied chromium layer reduces wear, minimizes metal fatigue, and prevents contamination from moisture or debris. However, the   chromed plating   thickness​ directly influences these benefits: ​Thin Coatings (<0.05 mm):​​ Prone to rapid wear, exposing the base metal to corrosion and increasing the risk of rod scoring. ​Optimal Thickness (0.05–0.15 mm):​​ Balances durability with cost efficiency, ensuring long-term resistance to abrasion and hydraulic fluid exposure. ​Excessive Thickness (>0.15 mm):​​ May lead to brittle coatings, micro-cracks, and premature failure under high stress. How to Optimize Chromium Plating for Maximum Hydraulic Efficiency​ To maximize ​hydraulic system performance, follow these best practices: ​Specify Industry Standards:​​ Adhere to ASTM B653 or ISO 4527 guidelines for chromium plating thickness ...

 When it comes to hydraulic cylinders, the quality of the cyinder barrel directly impacts performance, durability, and efficiency. ​ E355 seamless tubes ​ stand out as a premium solution, offering superior strength, precision, and reliability compared to welded or inferior-grade alternatives. Why Choose a E355 Seamless Tubes?​ ​ ​1. Superior Strength & Durability​ ​Seamless Construction:​​ Unlike welded tubes, seamless E355 tubes have ​no weak points, ensuring uniform strength and resistance to high-pressure conditions. ​High-Quality Material:​​ E355 steel (EN 10297-1) provides excellent ​mechanical properties, including high tensile strength and impact resistance. ​Longer Lifespan:​​ The absence of welds reduces the risk of cracks, leaks, and premature failure, making it ideal for ​heavy-duty hydraulic systems. ​2. Precision Honing for Optimal Performance​ ​Smooth Inner Surface:​​ Honing achieves a ​fine surface finish (Ra 0.2–0.4 µm)​, reducing friction and wear on seals a...

  ​SCM430 hollow chromed tubes​ are critical for components requiring high strength, corrosion resistance, and surface hardness. As a specialist in hydraulic precision tube manufacturing, we leverage advanced alloy metallurgy, electroplating technology, and rigorous quality protocols to deliver tubes that exceed industry standards. Below, we outline the technical and operational factors that distinguish a top-tier SCM430 chromed tube supplier from competitors. Chemical Composition & Mechanical Strength ​ ​SCM430 (JIS G4103)​: A medium-carbon chromium steel (C: 0.36–0.43%, Cr: 0.8–1.1%) with exceptional hardenability and fatigue resistance. ​Tensile Strength: ≥620 MPa (yield strength ≥450 MPa), ideal for heavy-duty load-bearing applications. ​Elongation: ≥15% (in 50 mm gauge length), balancing ductility with structural integrity. Why Hollow Chromed Tubes?​ ​ Chromed plating enhances the cylinder tube ’s surface properties while maintaining the core material’s mechanical strengt...

  SAE​1045 induction hardened rods ​ are the strong, durable solution for high-stress applications. As experienced producers and manufacturer of induction hardened rods , DATONG HYDRAULIC specializing in heat-treated steel solutions, we explain why these rods outperform traditional options and how they can elevate your machinery’s performance. 1045 induction hardened rods​ are engineered for industries where wear resistance, hardness, and reliability are non-negotiable. The process combines:  ​Precision Induction Hardening: A controlled heating and quenching method that creates a super-hard outer layer while keeping the core tough and ductile. ​1045 Steel Composition: High-carbon steel (0.45% carbon content) for exceptional tensile strength (up to 62 HRC) and durability in heavy-duty environments. Why Engineers and Buyers Choose 1045 Induction Hardened Rods​ ​1. Superior Wear & Impact Resistance​ The hardened surface withstands abrasion, corrosion, and high-pressure impac...

 E355 Cold Drawn Seamless Tube Production Process and Heat Treatment​ ​1. Billet Preparation​: ​Material Selection: High-quality carbon steel, alloy steel, or stainless steel billets are sourced.  ​Cleaning: Billets are cleaned to remove surface oxides or contaminants. ​2. Heating​: Billets are heated in a furnace to 1100–1300°C (depending on material) for plasticity and machinability. ​3. Piercing​: A rotary piercer or cross-roll piercer is used to create a hollow tube blank (mandrel bar) at high temperatures. This step forms the initial tube shape. ​4. Hot Rolling (Pilger Rolling)​​ :The hollow tube is elongated and reduced in diameter via a pilger mill, improving dimensional accuracy and surface finish. ​5. Cold Drawing ​ ​Process: The tube is drawn through a die and mandrel at room temperature using a cold drawing machine. Multiple passes may be required to achieve final dimensions. ​Lubrication: Lubricants (e.g., soap or emulsion) reduce friction and prevent galling. ​Res...

 As we all know , When the specific pressure in service is very high or there is a risk to damage the chromium plated surface by shocks or abrasions, it is advisable to use the induction hardened AISI 4140 chrome bars . In this case the chromium overlay receives a better support by the hardened base material and is, therefore, less delicate. Why Induction Hardening? Our controlled induction hardening process ensures: Targeted Hardening: Only the working surface is hardened (HRC 58-62), preserving core ductility. Uniform Case Depth: Precise electromagnetic induction achieves consistent case depth (0.8–1.2 mm), mitigating distortion risks. Thermal Efficiency: Faster than traditional furnaces, with minimal decarburization. The Technical of AISI 4140 Chrome bars Material Composition & Performance. 4140 Alloy Steel: A chromium-molybdenum steel (0.75–1.00% Cr, 0.15–0.30% Mo) offering exceptional tensile strength (≥980 MPa) and torsional rigidity. Chrome Plating: A 50-100 µm thick chr...

  4140 Steel Applications There are many SAE 4140 steel applications and when navigating your way to finding a new metal machining carrier/partner, it can be difficult to grasp just what’s out there. What types of metal rods , bars, and tubing are best suited for your facility, and what materials you should be using? SAE 4140 steel is widely used in many industrial fields for its strength and versatility, and therefore is important to know about it if you are considering using it in your facility. Here is an outline of its key characteristics and most common applications. What is SAE 4140 Steel? SAE 4140 steel is a low-alloy steel containing chromium and molybdenum as strengthening agents. These give great corrosion resistance and strength up to around 600°. These characteristics include high strength and good machinability that can easily be heat treated for increased hardness. 4140 Steel Composition Chromium, Cr 0.80 – 1.10 Manganese, Mn 0.75 – 1.0 Carbon, C 0.380 – 0.430 Silic...