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API 5L & ASTM certified Seamless and Welded (ERW/LSAW) steel pipes. Large inventory ready to ship globally.
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We have established close partnerships with numerous oil &gas companies, inventory dealers, and engineering companies worldwide.
Our factory offers different steel pipes suitable for Petrochemical, shipbuilding, water treatment, petroleum, chemical plants, power generation, pipeline construction, boiler systems, refineries, and other infrastructure construction projects.
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Product | Size (OD) | Standard |
|---|---|---|
SEAMLESS STEEL PIPES | Hot finish: 2″–30″ | API 5L, ASTM A53, ASTM A519, ASTM A106, ASTM A179, ASTM A335, ASTM A192, ASTM A333, BS3059, DIN1629, DIN17175 |
Cold drawn: 1/4″–18″ | DIN2391, JIS G3452, JIS G3445, EN10305, EN10210 | |
ERW STEEL PIPES | 6mm–820mm | API 5L, ASTM A53, EN10217, DIN2458, JIS G3589, JIS G3452, BS1387, AS1163 |
LSAW STEEL PIPES | 406mm–1570mm | API 5L, ASTM A53, EN10217, DIN2458, BS1387, IS:1978-1982, ASTM A252 |
SSAW STEEL PIPES | 219mm–3120mm | API 5L, ASTM A53, ASTM A252, EN10217, EN10219, IS:1978-1982, DIN2458 |
Square/Rectangular Hollow Section | 20×20mm – 800×800mm | ASTM A500, EN10210, EN10219, ASTM A53 |
Casing and Tubing | 48.26mm–508mm | API 5CT |
Surface Treatment | (Not applicable) | Black varnished coating, Anti-rust oil, Bare, Galvanized, 3PE, 2PE |
40+ Years of Excellence | Exported to 50+ Countries | 10,000+ Tons Annual Capacity
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40+Year Experience
Produce cabon steel pipe fittings and flanges, Since 1983. JSFITTINGS is proficient in ASME, GOST, JIS, DIN, SABS, BS, etc.
Professional pre-sales consultation, on-sale process, and after sales service.
Certified Quality
Approved by CE, ISO and GOST-R, strictly production to guarabtee quality. With wide range of testing and inspection services available, JS FITTINGS can help you maintain compliance with industry and customer specifications.
Advanced Technology
JS FITTINGS owns 2 new sandblasting equipment can blast 1/2”-40” fittings. The 100-meters automatic painting lines for flanges and fittings are more efficient and environmentally friendly.
Gurantees Delivery
Annual production up to 30,000 tons & lower wholesale price. Stable monthly output: 700 tons of flanges, 800 tons of pipe fittings. Government support: Environmental certificate
Exclusive logistics fleet and professional shipping agents.
The production of steel pipes involves meticulous processes to meet stringent standards.
1. Raw Material Preparation
High-quality steel billets or coils are used, ensuring the initial material meets standard specifications.
2. Pipe Formation
Seamless Pipes (SMLS): Manufactured by hot-forming a cylindrical steel billet into a hollow pipe.
Welded Pipes: Includes processes like electric resistance welding (ERW) or submerged arc welding (SAW).
3. Heat Treatment
Heat treatments such as normalizing or quenching are performed to refine the grain structure and optimize mechanical properties.
4. Quality Control and Testing
API 5L mandates rigorous testing for dimensional accuracy, chemical composition, and mechanical properties. Hydrostatic testing, UT inspection, and impact testing are common for PSL2 products.

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Our QC process begins from the moment raw materials arrive at our facility. Each batch is thoroughly inspected to ensure it meets our high standards. From there, each stage of the production process involves rigorous checks and inspections to catch any potential issues early.



We utilize state-of-the-art testing equipment to measure and analyze the physical and chemical properties of our products. This includes hardness testers, spectrometers, impact testing machines, and more. These tools allow us to ensure the consistency and reliability of our products.








We’re here to help and answer any question you might have. All your needs for steel pipes, fittings, and flanges will be met through JS FITTINGS.
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