4 inch carbon steel pipe manufacturer

Engineering for Global Excellence: JS Fittings

Built to Last Over four decades, we've made precise steel pipe fittings trusted by industries worldwide.

Since 1983, every solution combines expertise and innovation.

Global Standards, Local Trust For ISO 9001, CE, and GOST-R certification, every product is rigorously tested.

Quality in oil, gas, and construction projects is proved.

Smarter, cleaner production Automated 100-meter painting lines and eco-friendly sandblasting reduce waste and increase efficiency.

Sustainability is included at every phase.

Powering Massive Projects Produce 30,000+ tons annually with seamless logistics.

Bulk orders arrive on time from factories to ports worldwide.

Modern robots and human knowledge build fits that survive high pressures and conditions.

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Exact 4 Inch Carbon Steel Pipe

Solutions Durable and efficient 4 inch carbon steel pipes from JS FITTING. We supply pipes that meet demanding industrial specifications and project needs after decades of experience.

Elite Manufacturing Skills Our manufacturing uses cutting-edge technology and fine craftsmanship.

Every carbon steel pipe is quality-checked from raw material selection to precision welding for structural integrity and corrosion resistance.

CQA-certified quality assurance All 4-inch carbon steel pipes are ISO 9001 and API 5L certified.

We prioritize material traceability and third-party testing for shipment reliability.

Multiple Industry Customized Solutions Our custom carbon steel pipes can handle oil and gas, construction, and water treatment high-pressure and intricate design.

Please specify dimensions, coatings, or threading—we'll comply.

Full Tech Support We offer end-to-end support beyond manufacturing.

Our industrial-grade pipes are installed and maintained to fit your needs.

Innovation and customer service make JS FITTING a trusted sustainable infrastructure partner.