Welcome to Authentic Steel – Your Trusted China Steel Manufacturer & Global Exporter
Established in 1994 as the dedicated international trade branch of Winroad Group, Authentic Steel has built an outstanding global reputation as a leading steel strip factory in china, a top-tier slit coil supplier, and a global exporter of high-precision steel products. Strategically headquartered near the major international shipping gateway of Tianjin Port, our company integrates sophisticated in-house coil slitting, cold rolling, and continuous coating lines with strong strategic supply chain partnerships with China's premier steel conglomerates, including Baosteel, HBIS, Yanshan Steel, Rizhao, Anfeng, and Zongheng. Over three decades of steady global expansion, our sales and service network has delivered mill-direct steel solutions to overseas clients in more than 78 countries across Asia, Europe, Africa, the Middle East, and the Americas.
Our core manufacturing portfolio encompasses cold rolled steel coils, hot-dipped galvanized coils, galvalume (aluzinc) coils, prepainted color-coated steel coils (PPGI/PPGL), zinc-aluminum-magnesium (ZAM) coils, corrugated roofing sheets, and custom-processed steel strips. Whether you operate a steel pipe manufacturing plant, a cable armor production facility, an automotive stamping workshop, or a structural purlin factory, Authentic Steel provides precision custom slitting, uniform mechanical properties, tight width tolerances, and superior surface finishing for all your B2B manufacturing needs.
High-Precision Steel Strips & Custom Slit Coil Solutions
Professional Custom Slit Coil Supplier & Precision Steel Processing
As one of the leading precision slit steel coil manufacturers and a dedicated B2B manufacturing plant in China, Authentic Steel specializes in converting high-grade carbon steel, cold rolled steel, and metal-coated coils into narrow steel strips engineered for demanding industrial processing. Our advanced high-speed longitudinal slitting lines feature automatic tension control and micro-adjustable carbide rotary shears, enabling us to produce clean-cut steel strips with minimal edge burr, excellent camber control, and strict width accuracy.
Galvanized Steel Strips: High-durability hot-dipped galvanized steel strips with uniform zinc coating (30g-600g), widely specified for cable armor, electrical conduits, welded steel pipes, and C/Z purlin roll forming.
Cold Rolled & Black Annealed Steel Strips: Premium cold rolled narrow coils (SPCC / DC01 grade) and black annealed steel strips offering a smooth surface finish, clean edges, and superior ductility ideal for deep drawing, stamping, hinges, and hardware manufacturing.
Bright & Custom Coated Strips: Precision bright steel strips and prepainted/galvalume slitted coils tailored for decorative architectural trims, automotive reinforcement parts, and specialized electronics enclosures.
Product Category: Precision Slit Steel Strips / Narrow Steel Coils
Width Capabilities: 30mm – 870mm (Custom slitting to exact client engineering drawings)
Thickness Capabilities: 0.2mm – 4.5mm (Ultra-thin to heavy-gauge cold rolled stock)
Coil Inner Diameter & Bundle Weight: 508mm / 610mm ID | 3 – 13 Metric Tons per coil bundle
Available Material Grades: SPCC, DC01, Q195, Q235B, DX51D, DX52D, S250GD, S350GD, SGCC
Surface Finish Options: Oiled, Unoiled, Black Annealed, Bright Finished, Anti-Fingerprint, or Chromated
Edge Options: Mill Edge, Slit Edge, Deburred Edge, or Rounded Edge
Direct Factory Wholesale Advantages: Our narrow steel coil wholesale solutions eliminate intermediate trading markups, allowing overseas steel service centers, OEM factories, and international steel distributors to secure maximum cost efficiency.
Precision Custom OEM/ODM Slitting: We support custom width slitting, customized coil bundle weights, cut-to-length flat bars, and specialized oiled coatings tailored for automated high-speed stamping lines.
Uncompromising In-House Quality Assurance: Every production lot is thoroughly tested in our certified testing laboratory, verifying thickness tolerances, edge burr height, tensile strength, yield strength, and zinc layer adhesion.
Seaworthy Export Packaging & Tianjin Logistics: Located near Tianjin Port, we provide rapid inland transport and heavy-duty seaworthy export packaging (waterproof VCI paper, heavy-duty steel strapping, eye-to-sky or eye-to-wall wooden pallet packing) to guarantee rust-free delivery.
Contact our international sales engineering team today to receive a mill-direct quotation, request technical datasheets, or discuss custom slitting specifications for your upcoming production schedule!
