Explore our primary manufacturing catalog, fabricated under rigorous quality standards and shipped globally from Xingang Port.
Established in 1998, Tianjin Minjie Steel Co., Ltd has developed into an industry-leading structural steel and rebar manufacturing power, occupying a state-of-the-art facility spanning over 70,000 square meters. We are strategically situated just 40 kilometers from Xingang Port (Tianjin), the largest maritime gateway in Northern China. This logistical advantage ensures highly efficient, low-cost international shipping and fast port turnarounds for major engineering buyers globally.
Our manufacturing matrix is anchored by advanced automation, housing 4 pre-galvanized product lines, 8 ERW steel pipe product lines, and 3 hot-dipped galvanized processing lines. By strictly aligning with world-renowned technical protocols, including GB, ASTM, DIN, and JIS, we maintain a robust quality management framework certified to ISO9001 standards.
We are holders of 3 key structural design patents including specialized groove pipes, shoulder pipes, and victaulic coupling systems, reinforcing our status as innovators in steel fabrication.
Navigating compliance standards, modern reinforcement technologies, and cost efficiencies in megastructures.
Modern civil infrastructure projects require structural steel rebars that exceed minimum tensile strengths. Our high-yield deformed bars utilize specific micro-alloying elements (such as Vanadium and Niobium) to secure optimal elongation characteristics, preventing sudden structural failures during seismic events.
Epoxy coatings, hot-dip galvanization, and customized polymer coatings protect steel rebars from chlorides and ocean air. Our processing plants apply zinc layers matching global marine environment regulations, substantially expanding the service life of concrete structures.
By implementing advanced multi-stand rolling systems, we guarantee consistent nominal diameters, tight pitch tolerances, and uniform transverse rib geometry. This guarantees optimal mechanical bonding with concrete matrices, ensuring high structural load distribution.
We manufacture reinforcement bars matching varying global building codes. The table below represents core metallurgical profiles we supply.
| Steel Grade Designation | Standard Association | Yield Strength (Min) | Tensile Strength (Min) | Elongation at Fracture | Key Project Application |
|---|---|---|---|---|---|
| HRB400 / HRB500 | GB 1499.2 (China) | 400 / 500 MPa | 540 / 630 MPa | ≥ 15% - 17% | High-rise residential frames, highway bases |
| ASTM A615 Grade 60 / 75 | ASTM International (US) | 420 / 520 MPa | 620 / 690 MPa | ≥ 9% - 12% | Heavy industrial concrete foundations, bridge decks |
| BS 4449 Grade 500B | British Standards (UK/EU) | 500 MPa | 540 MPa (TS/YS ≥ 1.08) | ≥ 12% (Total Elongation) | Commercial infrastructure, coastal seawalls |
| AS/NZS 4671 Grade 500N | Australia / New Zealand | 500 MPa | ≥ 540 MPa | ≥ 15% (Uniform Elongation) | Seismic hazard zone structural frameworks |
Every year, engineering firms and metal distributors travel to Tianjin Minjie Steel to verify production capabilities and secure partnerships.
In September 2019, our management team visited clients in Singapore. Through technical alignment and commercial transparency, we established partnerships supplying high-quality structural steel products to local development projects.
During 2019, a South Korean engineering client toured our rolling lines to inspect customized profile variations. We reached an agreement to manufacture and deliver custom components matching their design specifications.
A long-term Australian construction partner visited our plant in November 2018. They conducted verification of our raw material trace-ability and physical testing benches, securing our role in their supply chain.
In 2019, after visiting several structural steel plants in Northern China, an Indian importing agency chose Tianjin Minjie. They signed a contract for 10 containers monthly, citing our delivery times and surface finishes.
In June 2017, a delegation from Lebanon inspected our hot-dip galvanizing lines. They placed a spot order of 1,000 tons of protective steel tubes for local municipal infrastructure development.
Following introductory meetings at the Canton Fair, a Saudi Arabian buyer toured our facility in 2018. They signed a supply agreement for structural steel tubes and scaffoldings to support ongoing oil and gas housing developments.
Tianjin Minjie Steel maintains a regular presence at the annual Canton Fair, serving as a primary platform for face-to-face quality demonstrations with global engineering contractors. Approximately 80% of our international clients schedule visits to our Tianjin factory after meeting at the fair.
This path from first introduction to on-site testing builds long-term confidence in our industrial capability, guaranteeing that bulk steel buyers receive structural steel products tailored to their regional standards.
Our industrial components undergo verification checks at every step of fabrication to meet global regulatory requirements.
Tianjin Minjie Steel has been granted 3 national patents designed to improve pipe installation and load handling:
These features minimize welding labor costs on-site, accelerating construction timelines for pipeline networks.
Our Quality Management System meets the requirements of the ISO9001 standard. Every shipping batch is backed by certified mill test reports, detailing raw material chemistry, yield strength, yield-to-tensile ratios, and elongation results.
We work with international inspection bodies (including SGS, BV, and Lloyd's Register) to perform regular audits, verifying structural steel reliability for global deployment.
Take a closer look at our material applications, packaging methods, and structural specifications.
Custom 50x150mm painted square tubes built for heavy industrial machinery framing, complying with EN 10219 structural criteria.
2 3/8-inch galvanized steel pipes made of Q235B low carbon steel, built for industrial scaffolding and safety systems.
Galvanized steel pipe configurations for foundation pile stabilization, structural building frames, and industrial fencing panels.
Standard light and medium grade pre-galvanized circular pipes engineered for fluid transmission and fire sprinkler frameworks.
Carbon steel ERW pipes manufactured using longitudinal welding techniques, tailored for global building projects.
Custom hot-dipped zinc coatings built for plumbing systems, framing structures, and electrical conduits.
Large-diameter spiral welded steel pipes engineered for deep foundation piles, drainage projects, and low-pressure fluid transport.
Hot-dip galvanized utility pipes with high corrosion protection, designed to meet outdoor mechanical framing requirements.
High-yield-strength black steel tubes designed for heavy structural fabrication and industrial material handling platforms.
Get clear, professional answers regarding metallurgy, standards compliance, shipping logistics, and custom manufacturing orders.
Browse additional structural components, manufactured to support diverse infrastructure, piping, and industrial framing applications.
Minjie Steel
