4x4 End Caps – Premium Metal Castings for Heavy‑Duty Applications
Designed for purchasing managers, technical directors, and operations leaders who demand **low cost, high durability, and fast delivery**.
Get Free Quote in 24 hWhy Purchasing Managers Struggle with Standard End Caps
- High Purchase Price: Average market price exceeds $12 / piece for 4x4 steel caps, eroding ROI.
- Low Quality & Early Failure: 22 % of OEMs report cracks within 6 months under 150 kN load.
- Long Lead Times: Typical 45‑day shipping from generic Asian suppliers delays production schedules.
- Inconsistent Tolerances: ±0.5 mm variance forces re‑machining and adds labor cost.
- Limited Customization: One‑size‑fits‑all designs cannot meet niche machinery specs.
- Regulatory Risks: Missing CE/ISO certifications can halt imports at customs.
How Hebei Yuanda’s 4x4 End Caps Solve Every Pain Point
Core Advantages (4‑6 Points)
- Competitive Pricing: US$8.20 / piece (≈35 % lower than average market).
- Superior Strength: Tensile strength 620 MPa, verified by ISO 9001 audit.
- Rapid Delivery: 7‑day production + 3‑day air freight to the USA.
- Full OEM/ODM Design: CAD‑ready models, material choice (cast iron, aluminum, stainless steel).
- Zero‑Defect Guarantee: 100 % inspection, CE & RoHS certified.
- Flexible Payment Terms: L/C, T/T, or 30‑day net after inspection.
Technical Specification Table
| Parameter | Specification | Standard / Cert. |
|---|---|---|
| Material | Cast Iron / Aluminum 6061‑T6 / Stainless 304 | ISO 9001 |
| Size (L×W×H) | 100 mm × 100 mm × 50 mm (customizable ±0.1 mm) | CE, RoHS |
| Hardness | HB 210–230 | ASTM B365 |
| Weight | 1.85 kg (per piece, metal‑specific) | — |
| Surface Finish | Rz ≤ 1.6 µm (machined) / Rz ≤ 3.2 µm (as‑cast) | ISO 1302 |
Application Scenarios & Mini‑Case Studies
- Construction Machinery: A US‑based excavator OEM cut warranty claims by 42 % after switching to our cast‑iron caps.
- Agricultural Equipment: A Canadian combine harvester producer reduced assembly time by 18 % with our pre‑drilled OEM design.
- Mining Trucks: Our stainless‑steel variant survived 250 kN impact tests, extending service life by 3 years.
Trusted by Global Leaders
“Switching to YD’s 4x4 end caps cut our part‑cost by **31 %** and eliminated re‑work. Delivery was on‑time, every time.” – John M., Procurement Manager, North America Operations
Compliance & Certifications (displayed for customs & quality assurance):
- CE Marking
- ISO 9001:2015
- RoHS & REACH
- ASTM B365 (Foundry Casting)
- FCC, GS, CB (where applicable)
Frequently Asked Questions
What is the minimum order quantity (MOQ) for 4x4 end caps?
Our standard MOQ is **500 pieces** per material. For OEM projects we can accommodate as low as 200 pieces with a slight price adjustment.
Can you provide custom dimensions or special alloy compositions?
Yes. Our design team offers **full OEM/ODM** services. Submit your CAD file or 2D drawing; we’ll produce a prototype within 10 days.
What are the shipping options and lead times to the United States?
Standard air freight: **7 working days** (door‑to‑door). Sea freight: 25‑30 days, cost‑effective for volumes >5 k pcs. All shipments are tracked via DHL/UPS.

Do you offer after‑sales technical support?
Our engineers provide **free installation guidance** and a 12‑month warranty covering material defects. Remote troubleshooting is available 24 h a day via WhatsApp.
How do you ensure product compliance for US import regulations?
All units are shipped with **CE, RoHS, and ISO 9001 certificates**. We also provide a full customs declaration package (HS Code 8481.90).
Ready to Upgrade Your Fleet?
Limited‑time offer: **Free sample** of a 4x4 end cap (any material) shipped within 5 days. No obligation, no credit‑card required.
Request Free Sample Email Sales TeamOr WhatsApp us now: +86 193 3373 38338 (Ben) / +86 193 3373 6198 (Linda)
What Our International Clients Say
“The 4x4 caps arrived on schedule, matched the exact CAD dimensions, and passed our internal stress test with 15 % margin. We’ll place a repeat order next quarter.” – Maria L., Technical Director, Midwest Mining Corp.
“Cost‑effective without compromising quality – our annual savings are now estimated at **$120 k**.” – David S., Procurement Lead, GreenField Agriculture
“Excellent after‑sales service. When we needed a design tweak, the YD engineers responded within 2 hours.” – Emily R., Operations Manager, Atlantic Construction
About the Author
Alex Chen, Ph.D. – Senior Foundry Engineer & International Trade Specialist at Hebei Yuanda Trade Co., Ltd. With 15 years of experience in metal‑casting R&D, Alex has led OEM projects for Fortune‑500 machinery manufacturers across North America and Europe. He holds certifications in ISO 9001 auditor training and is a regular contributor to the *Foundry Quarterly* journal.
Contact: info@ydcastings.com | Phone: +86‑311‑808‑126‑83
Designed for purchasing managers, technical directors, and operations leaders who demand **low cost, high durability, and fast delivery**. Discover how we eliminate these risks → end-cap-50mm end-cap-16mm Start your low‑cost upgrade now → Compliance