4‑Inch Pipe Cap – High‑Quality, Fast Delivery from Hebei Yuanda
Your reliable 4‑inch pipe cap solution for industrial pipelines, water‑treatment plants, and OEM projects.
Get Free Quote in 24 hWhy Purchasing Managers Struggle with 4‑Inch Pipe Caps
- High price volatility: Imported caps often exceed budget by 20‑30 %.
- Inconsistent quality: Dimensional deviations >0.5 mm lead to leaks and re‑work.
- Long lead times: Standard suppliers need 45‑60 days, delaying plant commissioning.
- Limited customization: OEM/ODM options are rarely offered, forcing design compromises.
Result: Project overruns, higher OPEX, and lost competitive advantage.
Let us solve these issues for you →Hebei Yuanda’s Solution: Premium 4‑Inch Pipe Caps
Leveraging a powerful factory and quality‑assurance system, we deliver 4‑inch pipe caps that meet ISO‑9001, CE, and RoHS standards while offering OEM/ODM design flexibility.
Technical Specifications
| Parameter | Specification |
|---|---|
| Size | 4 inch (DN100) – OD 114 mm |
| Material | Cast Iron, Carbon Steel, Stainless Steel (304/316) |
| Pressure Rating | PN 16 – PN 40 (customizable) |
| Surface Finish | Hot‑dip Galvanized, Powder‑coat, or Polished |
| Tolerance | ±0.2 mm (ISO 2768‑m) |
| Delivery Time | 7‑14 days (stock) / 21‑35 days (custom) |
Application Scenarios & Case Studies
- Water‑treatment plants: Replaced low‑grade caps, reducing leak incidents by 37 %.
- Oil & gas pipelines: Delivered ASTM‑A53 carbon‑steel caps within 10 days, cutting project lead‑time by 45 %.
- Industrial HVAC systems: Customized stainless‑steel caps with anti‑corrosion coating, extending service life to >15 years.
Trusted by Leading Companies Worldwide
“Switching to Hebei Yuanda cut our pipe‑cap procurement cost by 30 % and eliminated the 2‑week delay we faced with previous suppliers.” – John Miller, Procurement Manager, AquaTech Solutions
Certificates: ISO 9001, CE, RoHS, CCC, SGS Inspection Report (2025)
Frequently Asked Questions about 4‑Inch Pipe Caps
What are the minimum order quantities (MOQ) for standard 4‑inch pipe caps?
The MOQ is 500 pieces for stock material (cast iron or carbon steel). For stainless‑steel or special alloys, MOQ starts at 200 pieces.
Can you provide OEM/ODM design for unique flange connections?
Yes. Our engineering team offers CAD‑based design, prototype testing, and full‑scale production with a 2‑week design‑review cycle.
What are the typical payment terms for U.S. buyers?
30 % T/T deposit, 70 % balance against BL copy. We also accept L/C at sight for first‑time orders.
How do you ensure compliance with U.S. import regulations?
All caps are produced under ISO 9001 and CE certification. We provide full material test reports (MTR) and customs‑clearance documents on request.
What after‑sales support is available?
Free technical consultation for 12 months, replacement of any defective units within 90 days, and a 24‑h response hotline.
Ready to Secure Your 4‑Inch Pipe Caps?
Limited stock available – order within 48 h to lock in the 2026 price.
- Free sample (up to 5 pcs) – no obligation
- Money‑back guarantee if dimensions fall outside tolerance
Contact us directly:
Tel: +86-311-808-126-83 |
WhatsApp: Ben / Linda |
Email: info@ydcastings.com
What Our Customers Say
- Emily Chen, Operations Manager, Midwest Water Co. – “The caps fit perfectly on the first try, saving us 2 weeks of re‑work.”
- Mark Davis, Procurement Lead, SteelWorks Inc. – “Pricing was 28 % lower than the previous vendor, and delivery was on schedule.”
- Linda García, Technical Director, EcoPipe Solutions – “OEM design was completed in 10 days, and the quality exceeded ISO standards.”
Alex Li – Senior Foundry Engineer, Hebei Yuanda Trade Co., Ltd.
With 15 years in metal‑casting engineering, Alex has overseen production of over 2 million pipe caps for global infrastructure projects. He holds a B.Sc. in Metallurgical Engineering and is a certified ISO 9001 auditor.
Your reliable 4‑inch pipe cap solution for industrial pipelines, water‑treatment plants, and OEM projects. Result: Project overruns, higher OPEX, and lost competitive advantage. Leveraging a powerful factory and quality‑assurance system , we deliver 4‑inch
