6 Inch Cap – Precision‑Engineered Metal Casting for USA Industrial Buyers
High‑Quality, Low‑Cost 6 inch caps that eliminate downtime for your production line
Get Free Quote in 24 hWhy Your Current 6 Inch Caps Are Holding You Back
1. High Purchase Price – Most suppliers charge premium rates for small‑batch caps, inflating your BOM by up to 25 %.
2. Inconsistent Quality – Dimensional tolerances exceed ±0.15 mm, causing leaks and early wear in critical equipment.
3. Long Lead Times – Overseas factories often need 6‑8 weeks, forcing you to keep excess inventory.
4. Limited Material Options – You’re forced to choose between costly stainless steel or low‑strength cast iron.
5. Lack of OEM/ODM Support – Custom designs are rejected or priced out of reach.
Your All‑In‑One 6 Inch Cap Solution
Key Benefits
- Cost‑Effective Pricing – Up to 30 % lower than typical Chinese exporters.
- ISO 9001 & CE Certified – Guaranteed dimensional accuracy (±0.05 mm).
- Fast 3‑Week Delivery – High‑speed shipping from Hebei’s modern foundry hub.
- Material Flexibility – Choose cast iron, aluminum, or stainless steel per spec.
- Full OEM/ODM Design – Your CAD file, our production line.
- After‑Sales Support – 24/7 technical hotline and free 1‑year warranty.
Technical Specifications
| Parameter | Specification | Unit |
|---|---|---|
| Cap Diameter | 6.00 | inch |
| Material | Cast Iron / Aluminum / Stainless Steel | - |
| Tolerance | ±0.05 | mm |
| Surface Finish | Rz ≤ 1.6 µm | µm |
| Weight (per piece) | 0.85‑1.30 | kg |
| Process Options | Sand Casting, Die Casting, Lost Wax | - |
Where 6 Inch Caps Excel
Automotive Engine Blocks – Our caps reduced leakage incidents by 42 % for a Tier‑2 supplier in Detroit.
Hydraulic Pump Assemblies – A US‑based OEM cut assembly time by 15 minutes per unit, saving $12 k per month.
Industrial Food Processing – Stainless‑steel caps met FDA & HACCP standards, enabling fast market entry.
Trusted By Industry Leaders
“Switching to YD’s 6 inch caps cut our scrap rate by 37 % and saved $45 k in the first quarter.” – James Liu, Procurement Manager, Midwest Manufacturing
“The fast 3‑week lead time let us meet an urgent client deadline without extra inventory costs.” – Sarah Patel, Operations Director, Pacific Gearworks
Certificates: ISO 9001, CE, FDA, FCC, RoHS, VDE, ISO 14001, CB, GS.
Frequently Asked Questions
Q1: What is the minimum order quantity for a custom 6 inch cap?
A: We accept orders as low as 500 pieces for OEM/ODM projects. Larger runs receive volume discounts.
Q2: Can you provide a CAD model based on my design?
A: Yes. Upload your .STEP, .IGES, or .DWG file via our contact form; our engineering team will validate and quote within 48 hours.

Q3: How do you ensure compliance with US regulations?
A: All caps are manufactured under ISO 9001 and CE standards, with optional FDA/HACCP certification on request.
Q4: What shipping options are available to the USA?
A: We offer FOB, CIF, and DDP. Typical transit is 7‑10 days via air freight or 20‑25 days by sea.
Q5: Is after‑sales service included?
A: Yes. We provide a 12‑month warranty, free technical assistance, and a 30‑day replacement policy for any manufacturing defects.
Limited Offer: 10 % Discount on First Order (Expires 30 Days)
Secure your quote now, receive a free sample, and enjoy a money‑back guarantee if specifications are not met.
Request Quote WhatsApp Ben Email SalesWhat Our US Clients Say
- Michael Torres, Senior Buyer, Texas Machinery – “The 6 inch caps arrived on schedule, matched our tolerance specs perfectly, and reduced our line downtime by 22 %.”
- Emily Chen, Procurement Lead, California Plastics – “Y‑D’s price was 28 % lower than the previous vendor, and the quality exceeded expectations.”
- David Kim, Operations Manager, Ohio Energy Solutions – “Fast delivery allowed us to meet a critical project deadline without extra inventory costs.”
Alex Wu – Senior Foundry Engineer with 15 years of experience in metal casting for automotive and industrial sectors. Former Lead Engineer at a Fortune 500 OEM, now heading product development at Hebei Yuanda Trade Co., Ltd.
Contact: info@ydcastings.com | Phone: +86‑311‑808‑126‑83
1. High Purchase Price – Most suppliers charge premium rates for small‑batch caps, inflating your BOM by up to 25 % . 2. Inconsistent Quality – Dimensional tolerances exceed ±0.15 mm, causing leaks and