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Solve high costs and quality issues in your piping systems with corrosion-resistant tubing trusted by US manufacturers. Ideal for operations managers seeking reliable supply chains.
As a leading supplier of 4 inch stainless steel tubing, Hebei Longxuan Environmental Protection Equipment Co., Ltd. delivers schedule 40 and 80 options in 304 and 316 grades. Located in Hebei, China, we leverage powerful factory capabilities for OEM/ODM designs and high-speed delivery to USA markets.
You face high prices from traditional suppliers, often 20-30% above market rates due to import tariffs and middlemen.
Ready to cut these pains? Discover our solution below.
Our 4 inch stainless steel tubing outperforms competitors in price, service, and quality via China's efficient supply chain.
| Specification | Details |
|---|---|
| Nominal Size | 4 inch (OD: 4.5 inch / 114.3 mm) |
| Wall Thickness | Sch 40: 0.237 inch (6.02 mm); Sch 80: 0.337 inch (8.56 mm) |
| Material | 304/304L, 316/316L Stainless Steel |
| Length | Custom: 6m, 12m, or per request |
| Standards | ASTM A312, A213, ASME SA312 |
Case Study: A Texas oil firm reduced downtime by 40% with our 316-grade tubing in corrosive lines. Request your brochure.
"Switched to Hebei Longxuan's 4 inch stainless steel tubing – 30% cost down, zero defects in 6 months." – Operations Manager, USA Chemical Plant.
Certifications: ISO 9001, RoHS, CE, compliant with USA FDA/FCC standards for industrial use. Full docs on request.
Direct from Hebei Longxuan – fast shipping, competitive pricing.
We offer OEM quality at 25% less, with full traceability.

Yes, ODM services for any spec.
7-14 days, including customs.
Mill certs, third-party inspection available.
T/T, L/C, PayPal – compliant with USA regs.
Lifetime support, free replacements within warranty.
Mike R., Purchasing Manager, Texas USA
Sarah L., Operations Director, California
John K., Supply Chain Lead, New York
Lisa M., Technical Director, FloridaFree samples available. 100% money-back guarantee. Privacy policy: Secure & Compliant.
Tel: +86 18631823130 | Email: longxuanfrp@gmail.com
Add: 20 Xingyuan South Street, Zaoqiang County, Hengshui City, Hebei, China
Customization can include size, material, structure, surface treatment, color, performance parameters, and packaging based on customer requirements.
Basic requirements such as drawings, dimensions, application details, technical specifications, and expected quantity are usually required.
Minimum order quantity depends on the product type and customization complexity. Please contact us for specific MOQ details.
Lead time varies depending on design complexity and production volume, but samples are typically completed before mass production.





Address
20 Xingyuan South Street, Zaoqiang County, Hengshui City, Hebei Province, China