Wear Resistant Shock Base Valve With Consistent Dampingfor Long Service Life

We support a comprehensive range of materials to meet diverse performance requirements. Custom material specifications are available upon request.

1. Precision Density Control — Achieved density range of 6.5–6.7 g/cm³ ensures optimal balance between strength, porosity, and dimensional stability for consistent damping performance.
2. Controlled Hardness — HRB 60–100 hardness range provides excellent wear resistance while maintaining sufficient ductility to absorb shock loads without brittle failure.
3. Advanced Steam Treatment — 2-hour high-temperature steam process creates a uniform Fe₃O₄ (magnetite) layer of 0.004–0.005 mm thickness, delivering superior corrosion resistance and enhanced surface hardness without dimensional change.
4. Complete Shock Absorber Solutions — Full line products available including powder metallurgy pistons, rod guides, foot valves, PTFE bands for pistons, and DU bearings for rod guides, enabling single-source procurement.
5. PPAP Level III Documentation — Production Part Approval Process documentation submitted according to customer requirements, ensuring full traceability and process validation for automotive-grade quality assurance.

Our vertically integrated manufacturing process ensures quality control at every stage:

1. Powder Mixing — Precision blending of metal powders to achieve target composition
2. Forming — High-pressure compaction using auto mechanical presses (50T–140T) and hydraulic presses (100T–800T)
3. Sintering — Controlled atmosphere sintering across six sintering furnaces, including one dedicated harden sintering furnace
4. Sizing — Precision calibration to meet tight dimensional tolerances
5. Post-Treatment — Secondary operations including CNC machining, CNC milling, CNC turning, EDM, stamping, forging, casting, punching, drilling, and broaching
6. Steam Treatment — 2-hour high-temperature steam process for Fe₃O₄ surface layer formation
7. Oil Impregnation — Vacuum oil impregnation for self-lubricating properties where required
8. Final Inspection & Packing — 100% quality inspection before standard export packaging
9. Shipping — Secure logistics coordination for global delivery

• Auto Mechanical Press: 50T, 100T, 140T
• Hydraulic Press: 100T, 315T, 600T, 800T
• Six Sinter Furnaces, including one Harden Sinter Furnace
• Heat Treatment: Carbonitriding Quenching and High-Frequency Quenching
• Ultrasonic Cleaning and Auto De-burring Systems
• In-House Tooling: EDM, Wire Cutting Machine
• Machining Capabilities: Machine Center, CNC Milling, CNC Lathe, Two-End Lapper
• Supply Ability: 50,000 pcs per month

Our comprehensive testing laboratory ensures every component meets specification:

1. Carbon Sulfur Determinator — Precise chemical composition analysis
2. Metallurgic Microscope — Microstructure evaluation and phase analysis
3. Hydraulic Universal Material Tester — Mechanical property verification
4. Hardness Testers — Rockwell and micro-hardness measurement
5. Pneumatic Measuring Instrument — High-precision dimensional air gauging
6. Measuring Projector — Optical profile and contour inspection
7. Gear Testing Instrument — Specialized gear geometry verification
8. Electrical Profile Meter — Surface roughness and profile analysis
9. CMM (Coordinate Measuring Machine) — 3D dimensional verification

• Automotive Shock Absorber Systems — Passenger vehicles, commercial trucks, SUVs
• Motorcycle Suspension — Front forks and rear shock assemblies
• Powder Metallurgy Sintered Parts — General industrial and automotive components
• Locomotive Damping Systems — Railway vehicle suspension components
• Industrial Machinery Parts — Equipment requiring precision vibration damping
• Specialized Tool Parts — Custom tooling and fixture components

• High Precision Manufacturing — Advanced CNC and powder metallurgy processes deliver tight tolerances per customer drawings, ensuring consistent part-to-part repeatability in high-volume production.
• 100% Quality with Competitive Pricing — Every component undergoes full inspection before shipment, combining automotive-grade quality (IATF 16949:2016 certified) with cost-effective Chinese manufacturing.
• Superior Abrasion Resistance — Optimized material formulations and steam treatment processes produce components with excellent wear characteristics, extending service intervals and reducing maintenance costs.
• High Production Efficiency — 50,000-piece monthly capacity across a fully integrated production line, from powder mixing through final inspection, ensuring reliable on-time delivery.
• Energy-Efficient Manufacturing — Lean production methodology and optimized sintering cycles reduce energy consumption per part, contributing to both cost savings and environmental sustainability.