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STJ Group delivers high-precision cold drawn seamless steel tubes and value-added components with over 30 years of expertise serving North America and Europe.
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STJ Group is a leading manufacturer and distributor of cold drawn seamless steel tubing, tube parts, stamping parts, and cold-formed components. Founded in 1993 in Shanghai, China, we have been serving the North American and European automotive industries for over 30 years.
With four strategically located manufacturing plants in Suzhou, China, and a dedicated service team in Canada, STJ provides reliable, high-quality solutions tailored to customer needs. Leveraging China's manufacturing cost advantages, we deliver competitive pricing without compromising on quality or service.
30+ Years in Industry | 4 Plants in China | 2 Regions Served
Precision-engineered steel solutions designed for performance, durability, and consistency in automotive and industrial applications.
We combine decades of experience with advanced manufacturing to deliver unmatched value and reliability.
ISO/TS 16949 certified processes with full traceability and rigorous inspection protocols.
Global logistics network ensures on-time delivery to North America and Europe.
Engineering team available for design collaboration and custom part development.
Leverage China's manufacturing advantage without sacrificing quality or service.
Get answers to common questions about our products and services.
Cold Drawn Seamless steel tube is produced by drawing a hot-rolled tube through a die at room temperature. This process improves dimensional accuracy, surface finish, strength, and machinability compared to hot-finished tubes.
We primarily serve the automotive industry in North America and Europe, supplying components for chassis, suspension, safety systems, and structural applications.
Yes, STJ Group offers full customization including cutting, chamfering, end finishing, welding, forming, and surface treatments to meet your exact specifications.
Yes, STJ has a service team based in Canada to support customer needs, manage logistics, and provide technical assistance across North America.
We adhere to ISO/TS 16949 standards for automotive production, with full traceability, PPAP documentation, and rigorous in-process and final inspections.
Reach out to our international sales team for inquiries, quotes, or technical support.
88 Juyuan Rd, Qidu Town, Wujiang, Suzhou, Jiangsu, 215234 China
Mrs. Amy Chen
+86 18036839212
cah@tongjisz.com
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