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We supply full-category shock absorber components, including pistons, stampings, rubber seals, piston rods, springs, and self-developed banding/grooving machines.
Stamped Welded End Cap
Stamped Welded End Cap from XIAYI comes in five stamped styles — flat end, reinforced boss, wide flange, narrow lightweight and off-road — finished with four surface options up to a 65 μm dual coating. As the manufacturer, we pair style with working condition so assembly jams, weld cracks and peeling paint simply stop happening.
Most end cap complaints — assembly jamming, weld cracking, bottom bulge, coating peeling — trace back to one decision made at the sourcing stage: picking a generic cap instead of the right structural style. Our Stamped Welded End Cap line offers five stamped structural styles and four surface process grades, so each working condition gets a purpose-built part instead of a compromise.
Five Stamped Styles, Five Jobs
| Style | Structure Feature | Application | Failure It Prevents |
|---|---|---|---|
| Standard Flat End | Straight cylinder, flat welding surface, universal design | Sedans, hatchbacks, city SUV mono/double-tube shocks | Messy part selection, difficult assembly |
| Reinforced Boss | Annular reinforcing rib + central boss, partially thickened wall | MPV, light truck, heavy-load passenger vehicles | Bottom bulge, fatigue crack under heavy pressure |
| Wide Flange Sealed | Wide arc flange, widened sealing face, full rounded edge | Heavy-duty trucks, construction machinery | Weld crack and leakage under strong vibration |
| Narrow Mouth Lightweight | Narrow diameter, thin streamline shape, polished surface | Mini cars, compact EVs, small suspension shocks | Space limits, extra weight, running noise |
| Off-Road Anti-Scratch | Thickened outer wall, full arc wrap-around, wear-resistant matte coating | Off-road SUV, modified vehicles, desert & mountain use | Gravel scratching, coating peeling, impact deformation |
Four Surface Processes, Matched to Environment
| Process | Workflow | Key Strength | Best For |
|---|---|---|---|
| Basic Phosphating | Degreasing → rinsing → phosphating → drying | Base adhesion & weldability, salt spray ≥ 20 h | Urban roads, indoor storage, standard cars |
| Cathodic Electrophoresis | Pre-treatment → phosphating → e-coat → curing | Dense film 20–30 μm, even on edges, welding-friendly | City SUV, EV, aftermarket programs |
| E-coat + Powder Coating | E-coat → powder spraying → high-temp curing | Dual protection, film 45–65 μm, stone-chip resistant | Mixed roads, rainy & humid regions |
| Mirror Finishing & Passivation | Grinding → polishing → mirror passivation → sealing | Low friction, precision sealing, premium appearance | High-end shocks, premium export market |
5 + 4
Style & process combinations
45–65 μm
Dual-coating film, edge covered
Full round
Burr-free edges, no abnormal noise
Pain Point to Style Pairing
| Customer Pain Point | Root Cause | XIAYI Pairing |
|---|---|---|
| Oil leakage & poor welding | Residual oil, narrow sealing area | Mirror finishing + Wide Flange Sealed style |
| Outdoor rust & paint peeling | Thin coating, exposed edges | E-coat + powder system + full wrap-around style |
| Bottom bulge & crack under load | No reinforcing structure | Reinforced Boss style + phosphating base |
| Assembly jam & part scratch | Sharp edges, burrs | Full rounded design + passivation, Standard / Narrow styles |
| Gravel damage off-road | Thin wall, weak wear resistance | Off-Road Anti-Scratch style with matte wear-resistant coating |
FAQ
Q: Can I combine any style with any surface process?
A: Yes — styles and processes are independent options. For example, a Wide Flange Sealed cap with e-coat suits coastal truck fleets, while a Narrow Mouth Lightweight cap with mirror finishing suits premium compact EV shocks. We advise the best combination per your climate and welding setup.
Q: We are not sure which style our shock needs. Can you help?
A: Send the cylinder drawing, vehicle type and typical road conditions. Our engineers map them to a style + process recommendation, and we can produce trial samples for assembly verification before bulk order.
Q: Is there an MOQ per style?
A: Standard tooling styles support economical batch sizes; custom style + process combinations are quoted per drawing. Contact us with your annual volume for the best structure.
Get a style & process recommendation for your shock program
Ningbo XiaYi Electromechanical Tech Co., Ltd. — five stamped end cap styles, four surface grades, one factory. Send your application details and receive a tailored selection chart with samples.
About XIAYI style engineering: the five styles above were not created by a catalog team — each one originated from a real customer failure case, from gravel-shredded coatings on desert off-road vehicles to bulged flat caps on overloaded MPVs, then engineered, tooled and validated as a permanent option in the XIAYI line.
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Contact Info
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Address
No.209 Lane 520 Tongning Rd,Qianjiang Street,Jiangbei District, Ningbo City, Zhejiang Province, China
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Get a Tailored Quote for Your Shock Absorber Parts
Why Global Buyers Choose Ningbo Xiayi:
✓ IATF 16949 Certified — Defect rate strictly controlled below 0.1%.
✓ Full-Category Supply — Pistons, rods, springs, stampings & rubber parts.
✓ R&D Support — Custom powder metallurgy formulas & 7-10 day rapid prototyping.
✓ Proven Capacity — 50 million core pistons produced annually for global OEMs.
Ready to start? Complete the form below and our engineering team will respond within 24 hours with a custom recommendation.
