Datong Hydraulic

  ​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...