Explore our elite range of structural steels, galvanized wiring systems, and high-tolerance industrial piping direct from our state-of-the-art facilities.
Why leading global EPC contractors, structural engineers, and agricultural developers choose China's leading integrated metallurgy plants.
Global infrastructure calls for unmatched reliability. As supply chains adapt to post-pandemic challenges, procurement departments must balance high material properties, rigorous certification compliance, and complex shipping logistics. Tianjin Minjie Steel Co., Ltd. stands at the intersection of production capacity and technical innovation.
Founded in 1998, our facilities are located just 40 kilometers from XinGang Port—the primary maritime gateway in Northern China. This geographic advantage drastically cuts land transportation timelines and keeps shipping costs highly competitive, giving overseas buyers a significant edge.
With an annual output of over 300,000 metric tons of high-grade piping, we supply key components to fields ranging from mechanical manufacturing and agricultural greenhouse installations to modern skyscrapers and global railway networks.
Precision engineering powered by advanced metallurgy automation and specialized processing lines.
Equipped with 4 high-efficiency pre-galvanizing production lines, 8 high-speed Electric Resistance Welded (ERW) steel tube lines, and 3 specialized hot-dip galvanizing process units to meet strict structural specifications.
We hold 3 core patents in pipeline connection technology: proprietary groove pipes, shoulder pipes, and high-sealing victaulic joints, which reduce installation labor by up to 35% on site.
Our output complies strictly with international certifications including ISO 9001, European CE, ASTM, British Standards (BS), DIN, and Japanese Industrial Standards (JIS) to guarantee compatibility.
Compare our primary production parameters against global structural project requirements.
| Steel Pipe Class | Available Dimensions | Standards Compliance | Zinc Coating Options | Primary Grade Match |
|---|---|---|---|---|
| Pre-Galvanized Pipe | OD: 21.3mm - 219mm | WT: 0.8mm - 2.5mm | ASTM A53, BS 1387, EN 10219, GB/T 3091 | 40g/m² – 120g/m² | Q195, Q235B, S235JR |
| Hot-Dip Galvanized Pipe | OD: 21.3mm - 406mm | WT: 1.5mm - 12.0mm | ASTM A53, BS 1387, EN 10219, DIN 2440 | 200g/m² – 500g/m² (up to 70 microns) | Q235B, Q345B, S355JR |
| Square & Rectangular Tube | 15x15mm - 400x400mm | WT: 0.6mm - 16.0mm | ASTM A500, EN 10219, JIS G3466 | Pre-galvanized / Hot-dipped / Painted | Q195, Q235B, Q345B, S355 |
| ERW Welded Black Tube | OD: 10mm - 406mm | WT: 0.5mm - 15.0mm | ASTM A53, EN 10219, GB/T 13793 | Self-color / Lightly Oiled / Varnished | Q195, Q235B, Q345B |
*Custom sizing, wall thickness adjustments, and specific end-preparations (threading, coupling, grooving, bevelling) are available on request.
Providing infrastructure components for essential global industries.
Our certified H-Beams, structural channels, and equal/unequal angle bars offer high mechanical yield strength, forming the core skeletons for pre-engineered steel buildings, warehouses, and industrial roofing systems.
With specialized high-zinc pre-galvanized pipes and square sections, we provide complete, rust-resistant frame configurations that stand up to the high humidity levels found in industrial crop cultivation setups.
Designed and manufactured to handle heavy structural loads, our premium galvanized round tubes and coupling accessories comply with stringent international safety regulations for high-rise work platforms.
How our R&D keeps our products ahead of global green regulations and engineering standards.
The steel industry is moving rapidly toward decarbonization and smarter product design. As a forward-thinking exporter, Tianjin Minjie is adapting our processes to match these shifting market requirements:
Over two decades of supplying major projects across the Asia-Pacific, the Middle East, and beyond.
In September 2019, our technical team visited project managers in Singapore, securing supply agreements for high-grade structural framing components.
Long-term Australian clients visited in November 2018 to perform quality audits on our heavy hot-dip galvanized lines, confirming compliance with local build codes.
In June 2017, a delegation from Lebanon placed an immediate order for 1,000 tons of structural steel pipes following an on-site testing session at our factory.
Our team represents Tianjin Minjie at the Canton Fair every year. Over 80% of our new clients arrange a visit to our Tianjin facility after initial consultations at our booth, building partnerships on clear, verifiable proof of our production capabilities.
Get clear, detailed answers regarding technical specifications, minimum orders, and shipping logistics.
Our materials undergo strict testing to ensure they meet the quality standards demanded by industrial projects worldwide.
High-performance structural steel sections and specialized utility tubing built for extreme load conditions.
Reviewing real-world applications of our precision painted tubes and standard construction profiles.
50x150mm steel square sections designed for modern manufacturing machinery, meeting European EN 10219 safety specifications.
2 3/8 inch building scaffolding pipes fabricated from low-carbon Q235B steel, offering excellent weldability and high loading safety margins.
Threaded and coupled light-class piping, widely applied in structural support configurations and mechanical liquid lines.
Minjie Steel
