The top carbon steel lap joint flange manufacturer, JS FITTING, provides powerful solutions for high-pressure oil, gas, and petrochemical systems.
Our ASTM A105 carbon steel flanges meet ANSI B16.5 for corrosion and high-temperature resistance.
Every product passes ISO and API-certified quality checks for application dependability.
Our technical staff rapidly and properly adapts to standard diameters or custom flanges for special applications.
These seamless pipeline and valve flanges save maintenance downtime and improve system life.
JS FITTING focuses offshore rig and refinery pipe safety and efficiency.
Choose a reliable flange manufacturer for durability.
with over 40 years of experience, has a 35,000 m² facility with four automated manufacturing lines.
Steel fittings, flanges, and pipes that satisfy global ASTM/EN requirements are produced over 30,000 tons annually.
Four Decades of Precision Engineering We've perfected steel pipe fitting manufacture since 1983, integrating classic and new methods for customized industrial solutions.
## Quality Global Standards-backed To ensure oil & gas, shipbuilding, and construction reliability, ISO 9001, CE, and GOST-R certifications need thorough quality inspections on every product.
Smart, sustainable manufacturing Automated 100-meter painting lines and eco-friendly sandblasting systems reduce waste while maintaining high-speed production for large-scale orders.
High-capacity delivery network This logistics crew delivers 30,000+ tons of bulk cargoes internationally without delays.
Our components are trusted partners in creating essential infrastructure worldwide due to these qualities.

for Industry Looking for a reliable carbon steel lap joint flange manufacturer with precision engineering and industry expertise.
JS FITTING makes high-performance flanges for oil & gas, chemical processing, and power production.
Why pick our carbon steel lap joint flanges?
ASTM-certified materials provide superior corrosion resistance.
- High-pressure leak-proof couplings with precision-machined surfaces - Customizable dimensions and coatings for customized pipeline configurations - Thorough quality inspections during production for long-term reliability As experienced carbon steel lap joint flange manufacturers, we understand the need of durability in difficult conditions.
Our heat-treated and stress-relieved flanges endure severe temperatures and mechanical stresses, reducing vital operating downtime.
Our team provides adaptable options for standard or bespoke carbon steel flanges based on project size.
We produce worldwide safety-compliant flanges using quick prototyping and ISO methods.
Overview of technical advantages: • Easy maintenance with stub ends seamless compatibility • Reduced assembly friction with smooth bore finishes • Cost-effective design for frequent disassembly Ideal for big orders with rapid turnaround and consistent quality.
Performance is guaranteed by non-destructive testing and 15+ years of industrial application knowledge for each flange.
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