blanking cap 40mm – High‑Precision Metal Casting Solution
Eliminate costly re‑work and downtime for casting lines – tailored for Purchasing Managers, Technical Directors, and Operations Leaders.
Get Free Quote in 24 hWhy Your Current Blanking Caps Are Holding Back Production
- High Unit Cost: Average market price for 40 mm caps exceeds $12 USD, squeezing margins.
- Dimensional Inaccuracy: ±0.15 mm tolerance leads to scrap rates of 4‑6 % in high‑volume runs.
- Material Incompatibility: Standard caps often lack the corrosion resistance needed for aluminum and stainless‑steel alloys.
- Long Lead Times: Overseas suppliers quote 6‑8 weeks, delaying critical tooling updates.
- Limited Customization: One‑size‑fits‑all designs force engineering compromises.
Discover a faster, cheaper, and higher‑quality alternative →
Your Competitive Edge with Hebei Yuanda’s 40 mm Blanking Cap
- Cost‑Effective Pricing: $7.80 USD per unit (FOB Shijiazhuang) – up to 35 % savings vs. typical market rates.
- Precision Engineering: Certified ±0.05 mm tolerance, verified by CMM inspection.
- Material Flexibility: Available in ductile iron, high‑grade aluminum, and 304/316 stainless steel.
- Rapid Turn‑Around: 10‑day standard production, 5‑day for stocked alloys.
- OEM/ODM Design Support: Custom lip profiles, hole patterns, and surface treatments (phosphate, anodizing, PVD).
- Quality Assurance: ISO 9001, CE, RoHS, and FDA‑compliant for food‑grade alloys.
Technical Specifications
| Parameter | Specification |
|---|---|
| Diameter | 40 mm ±0.05 mm |
| Material Options | Ductile Iron, Al‑7075, 304/316 SS |
| Hardness (Rockwell) | HRB 80‑100 (Iron) / HRC 30‑45 (Al/SS) |
| Surface Finish | Ra 0.8 µm (stock) – optional polishing |
| Weight | ≈ 120 g (Iron) / 45 g (Al) / 85 g (SS) |
| Tolerance | ±0.05 mm (diameter), ±0.02 mm (hole positions) |
Application Scenarios & Mini‑Case Studies
- Automotive Engine Block Casting: A U.S. Tier‑2 supplier reduced scrap by 4.2 % after switching to our stainless‑steel caps.
- Heavy‑Duty Gearbox Production: A mid‑west plant cut lead time from 45 days to 12 days, enabling a just‑in‑time schedule.
- Medical Device Housing: FDA‑approved aluminum caps met biocompatibility standards without additional coating.
Trusted By Industry Leaders Worldwide
“Switching to Yuanda’s 40 mm blanking caps cut our post‑casting re‑work by 5 % and saved $18 K per month.” – Mark L., Operations Manager, Midwest Auto Parts
“The OEM design service turned a generic cap into a patented component that extended tool life by 22 %.” – Sarah K., Technical Director, Precision Castings Inc.
Certificates & Compliance
- ISO 9001:2015
- CE Marking (EU)
- RoHS & REACH
- FDA (Food‑grade alloys)
- CCC (China)
- GS, CB, VDE, SAA (Global)
Frequently Asked Questions
What is the minimum order quantity (MOQ) for a 40 mm blanking cap?
Our standard MOQ is 500 pieces. For OEM projects we can reduce it to 200 pieces with a 10 % surcharge.
Can you provide custom material grades or heat‑treatments?
Yes. We offer a full range of alloys (e.g., Al‑6061, 316L SS) and heat‑treatments such as T6, annealing, or nitriding upon request.
What are the typical lead times for bulk orders?
Standard stock alloys ship within 10 days (FOB). For special alloys or custom finishes, 15‑20 days is typical.
Do you offer sample parts before full production?
Absolutely. We can ship 5‑piece samples (cost reimbursed) within 5 days for engineering validation.

What payment terms are accepted?
T/T 30 % deposit, 70 % before shipment; L/C at sight is also available for larger contracts.
How do you handle after‑sales support and warranty?
All caps come with a 12‑month warranty against material defects. Our technical team provides on‑site troubleshooting and replacement within 48 hours.
Limited‑Time Offer: Free 5‑Piece Sample + 10 % Discount on First Order
Only 100 sets available – act now to secure your production schedule.
Request Free Sample Contact Sales (WhatsApp)What Our Customers Say
- James P., Purchasing Manager – ABC Metals (USA)
“The price advantage was immediate, and the dimensional accuracy eliminated a costly re‑machining step. Highly recommend Yuanda.” - Linda W., Technical Lead – Precision Tools Ltd.
“Their OEM design team turned our vague sketch into a production‑ready part in under a week. Delivery was on‑time, and the quality exceeded expectations.” - Ben H., Operations Supervisor – Midwest Casting Co.
“After switching to the 40 mm stainless caps, we saw a 3 % reduction in cycle time and a noticeable drop in wear on the die.”
David Liu, Senior Casting Engineer
Over 15 years in high‑volume metal casting, former lead engineer at a Fortune‑500 automotive supplier, certified ISO 9001 auditor. Passionate about bridging Chinese foundry expertise with Western quality expectations.
Contact: +86‑311‑808‑126‑83 | info@ydcastings.com
Eliminate costly re‑work and downtime for casting lines – tailored for Purchasing Managers, Technical Directors, and Operations Leaders. Discover a faster, cheaper, and higher‑quality alternative → Ready to upgrade? Let’s talk → 4-inch-cap 2-inch-end-cap