Yuantai Yuanda Mass-Produces 4024mm SAW Steel Pipes
TIANJIN, CHINA — Tianjin Yuantai Yuanda Pipeline Technology Co., Ltd., a fully owned subsidiary of Tianjin Yuantai Derun Steel Pipe Manufacturing Group Co., Ltd., has officially reached full-scale mass production of 4024mm extra-large diameter spiral welded steel pipes. This milestone sets a new benchmark in ultra-large diameter pipe manufacturing, positioning the group as a premier global supplier for heavy-duty pipeline infrastructure.
Engineering Breakthrough: Overcoming 4-Meter Diameter Manufacturing Challenges
Manufacturing a spiral welded steel pipe with an outer diameter exceeding 4 meters (4024mm) presents significant technical hurdles in steel strip feeding, continuous edge forming, and internal/external double-sided submerged arc welding (SAW).
Equipped with 3 advanced automated spiral pipe production lines, Yuantai Yuanda enforces strict quality control standards throughout the process:
Advanced Non-Destructive Testing (NDT): 100% of weld seams undergo X-ray inspection and Ultrasonic Testing (UT).
Hydrostatic Pressure Testing: Dual-stage pressure testing guarantees structural integrity under extreme working conditions.
CNAS/CMA Lab Verification: Physical and chemical properties are continuously monitored by a dual-certified testing center to maintain a 100% qualification rate.
Comprehensive Supply Chain & Anti-Corrosion Capabilities
Operating from a 50,000 m² facility in Jinghai District, Tianjin, Yuantai Yuanda maintains an annual production capacity exceeding 200,000 tons of spiral welded pipes and 2,000,000 m² of anti-corrosion coatings.
By integrating 2 JCOE longitudinal submerged arc welding (LSAW) lines and 4 specialized anti-corrosion coating lines, the mill provides a single-source supply chain covering:
Spiral Welded Steel Pipes (SAW/SSAW)
Advanced Anti-Corrosion Coatings: Including 3PE (Three-Layer Polyethylene) and TPEP (Three-Layer Polyethylene / Epoxy Powder)
Custom Pipe Fittings and Flanges
The company holds major international quality certifications, including API-Q1, API-5L, ISO 9001/14001/45001, EU PED (Pressure Equipment Directive), CPR (Construction Products Regulation), and drinking water hygiene permits. Products are manufactured strictly to API-5L, GB/T 9711, and other global standards.
Proven Track Record in Global Infrastructure
Yuantai Yuanda's extra-large diameter pipes are deployed in landmark engineering projects worldwide:
Egypt New Capital Water Project: Supplied 3028mm and 3036mm TPEP-coated steel pipes for mega-city water diversion.
Middle East Municipal Infrastructure: Delivered TPEP-coated water pipelines tailored for high-temperature desert environments in Saudi Arabia via batch container transport.
Maritime Renewable Energy: Supplied over 10 km of heavy-wall painted spiral pipes for China Huadian’s Caofeidian offshore photovoltaic pile foundation project.
Domestic Gas Networks: Supplied 3PE underground gas transmission lines for urban utility networks in Yulin, Shaanxi.
Contact Our Engineering Team
Looking for certified large-diameter spiral welded steel pipes or specialized TPEP/3PE anti-corrosion solutions? Contact Tianjin Yuantai Derun Group today for technical specifications, mill test certificates, and project quotes.
