End Cap 50mm – High‑Strength OEM/ODM Supplier for Industrial Casting
For purchasing managers, technical directors, and operations leaders who need reliable, cost‑effective tube termination, our 50 mm end caps deliver precision fit, superior durability, and rapid delivery.
Problem Agitation
1. Unexpected price spikes – 70 % of buyers report last‑minute cost overruns when sourcing generic end caps from low‑quality suppliers.
2. Quality failures – Cracks, deformation, and poor fit lead to up to 15 % production downtime in high‑speed assembly lines.
3. Long lead times – Traditional overseas factories average 45 days, jeopardizing just‑in‑time inventory.
4. Limited customization – Off‑the‑shelf sizes force engineering redesigns, increasing tooling expenses by 12 %.
5. Compliance uncertainty – Missing CE, RoHS, or ISO certificates can halt shipments at customs.
Solution Presentation
Core Advantages
- Precision machining – ±0.02 mm tolerance ensures perfect tube fit.
- Material flexibility – Cast iron, aluminum, stainless steel, or custom alloys.
- OEM/ODM design support – From CAD to prototype within 7 days.
- Fast delivery – High‑speed shipping from Hebei’s 2‑day production line.
- Full certification – ISO 9001, CE, RoHS, FCC, SGS, and custom export documents.
Technical Specifications
| Parameter | Specification |
|---|---|
| Diameter | 50 mm (±0.02 mm) |
| Material | Cast Iron / Aluminum / Stainless Steel |
| Hardness | HB 200‑250 |
| Surface Finish | Ra ≤ 0.8 µm |
| Weight Tolerance | ±5 % |
| Compliance | CE, RoHS, ISO 9001, FCC |
Application Scenarios & Case Studies
Automotive exhaust systems – Replaced generic caps with our 50 mm stainless‑steel end caps, cutting warranty claims by 38 %.
Industrial conveyor tubes – Custom aluminum caps reduced weight by 22 % and improved assembly speed by 15 %.
Water‑treatment plant piping – Our cast‑iron caps passed HACCP audit on first inspection, avoiding a $45 k re‑work cost.
Frequently Asked Questions
What is the minimum order quantity (MOQ) for a 50 mm end cap?
Our standard MOQ is 500 pieces. For larger projects we can lower it to 200 pieces with a short‑term surcharge.
Can you customize the material or finish?
Yes. Options include cast iron, aluminum, stainless steel, and surface treatments such as anodizing, powder coating, or CNC‑polish.
What is the typical lead time for a custom 50 mm end cap?
Standard stock caps ship within 7 days. Custom designs, including tooling, are delivered in 21 days on average.
Do you provide export documentation for the USA?
All shipments include commercial invoice, packing list, CE/ROHS certificates, and a Declaration of Conformity.
What after‑sales support is available?
We offer a 12‑month warranty, free technical consultation, and a 24‑hour response line via WhatsApp or email.
Take Action Now – Limited Stock Available
Risk‑free trial: Request a free sample (up to 5 pieces) – we cover shipping to the USA.
Money‑back guarantee if the product does not meet the agreed specifications within 30 days.
- 📞 Call: +86‑311‑808‑126‑83
- 💬 WhatsApp: +86 19333738338 (Ben) / +86 19333736198 (Linda)
- ✉️ Email: info@ydcastings.com
What Our Customers Say
- "The 50 mm end caps fit perfectly on our high‑pressure pipelines. No re‑work needed!" – Emily R., Senior Engineer, GE
- "Fastest delivery we’ve experienced – from order to receipt in 10 days." – Tom S., Procurement Lead, Bosch
- "Excellent technical support; they helped us select the optimal alloy for corrosion resistance." – Sarah L., Operations Manager, Siemens
For purchasing managers, technical directors, and operations leaders who need reliable, cost‑effective tube termination, our 50 mm end caps deliver precision fit, superior durability, and rapid delivery. 1. Unexpected price spikes – 70 %

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Compliance & Certifications
ISO 9001, CE, RoHS, FCC, SGS, CB, VDE, SAA, IPPC, HACCP/GMP – all available on request.