Direct from Hansheng Technology’s advanced cold-rolling facilities. High-tolerance certified industrial materials.
Established in 2006, Hansheng Technology (Hebei) Co., Ltd. is strategically situated in Tangshan City, Hebei Province—the heart of China's steel industry. With a prime location just 150 kilometers from the Tianjin seaport and 150 kilometers from the capital, Beijing, we benefit from an exceptional logistics network that ensures efficient global shipping.
We operate 8 high-efficiency production lines with a total annual production capacity of 300,000 metric tons. Our extensive product portfolio includes Galvanized Steel Wire, Hot/Cold Rolled Steel Coils and Sheets, GI/PPGI, GL/PPGL, and various Section Steels, all meticulously manufactured to adhere to rigorous international standards such as GB, JIS, ASTM, DIN, EN, and AS/NZS.
Driven by a commitment to supply chain excellence, competitive pricing, and professional service, our products have earned unanimous recognition across markets in the Middle East, Southeast Asia, North Asia, Africa, the Americas, and Europe. We operate under the firm philosophy of "honoring contracts and keeping promises."
An engineering guide on recrystallization mechanisms, dimensional accuracy, and custom structural applications.
Unlike hot rolling, which occurs above the recrystallization temperature of steel (typically above 1100°C), the cold-rolling process is executed at room temperature. The process begins with pickled hot-rolled coils being fed through a series of rollers (reduction mills). Cold reduction introduces severe plastic deformation into the grain structure of the steel. This induces strain hardening (work hardening), significantly increasing the material's yield strength and tensile strength while reducing its ductility.
To restore the necessary mechanical properties for stamping, drawing, or structural applications, the cold-rolled steel must undergo annealing (either batch annealing or continuous annealing). The heat treatment recrystallizes the elongated grain structures, transforming them back into equiaxed grains. This dynamic balancing of hardness and ductility allows direct manufacturers to tailor the material to specific requirements, from ultra-high-strength structural steels (UHSS) to deep-drawing steel grades (EDDS).
One of the primary drivers for opting for cold-rolled coil over hot-rolled coil is its superior dimensional precision. Precision manufacturers utilize continuous thickness automatic control systems (AGC) utilizing X-ray thickness gauges. This enables thickness tolerances to be maintained within ±0.02 mm or better.
| Parameter | Cold-Rolled Coil (CRC) Capability | Relevant Quality Standard |
|---|---|---|
| Thickness Range | 0.15 mm – 3.0 mm | ASTM A1008 / EN 10130 |
| Width Range | 600 mm – 1500 mm | JIS G3141 / GB/T 708 |
| Thickness Tolerance | ±0.015 mm to ±0.03 mm | ISO 9445 / DIN EN 10131 |
| Surface Finish Options | Bright (B), Semi-Bright, Dull (D), Matte | EN 10130 Surface Class A & B |
| Oiling Configurations | Lightly Oiled, Heavily Oiled, Dry, Passivated | ASTM A568 Protective Protocols |
Industrial applications of Cold-Rolled Coils span across multiple sectors due to their clean finish and high formability:
Why leading global supply chains partner with Hansheng Technology for their steel inventory needs.
We believe in building mutual trust and reliability. We are committed to achieving a passion for excellence and maintaining absolute integrity in everything we do. We empower our workforce to continuously innovate and adapt dynamically to shifting market and consumer trends.
Our quality assurance includes pre-shipment inspections for every batch. Supported by ISO 9001:2000 and ISO 14001 certifications, we check dimensional tolerance, chemistry profiles, coating adhesion, and mechanical performance to prevent defects prior to shipment.
Located in Tangshan, the steel production capital of China, we have access to local raw materials and reliable ports. The proximity to Beijing and Tianjin port ensures short lead times, lowering overall transport costs for overseas buyers.
Versatile steel profiles and wires designed to meet rigorous architectural and engineering demands.
Proving reliability on major infrastructure projects globally.
High-standard structural steel profiles supplied for prestigious national convention infrastructures.
Clinker production line project requiring high structural stability under heavy industrial loads.
Precision steel structural framing components fabricated for modern architectural residential builds.
As direct manufacturers, Hansheng Technology ensures complete compliance with local and international quality standards. The cold-rolled steel coils satisfy the performance thresholds of the EU EN 10130, American ASTM A1008, and Japanese JIS G3141 specifications. Each production run is documented with Material Test Certificates (MTC) showing chemical composition (Carbon, Manganese, Phosphorus, Sulfur, Aluminum) and mechanical properties (Yield strength, Tensile strength, Elongation, r-value, n-value).
In accordance with global ecological targets, we utilize waste acid recovery systems within our pickling lines. This minimizes chemical waste and optimizes water recycling during manufacturing. We are steadily reducing carbon footprints in our processing lines to align with target emission limits defined under international environmental agreements.
To support next-generation structural requirements, our technical roadmap integrates real-time thickness and flatness control modules driven by machine learning algorithms. By monitoring tension and rolling speed in real time, cold-reduction mills can dynamically adjust roll gaps to keep tolerances under ±0.01 mm.
Additionally, we are developing thin-gauge Zinc-Aluminum-Magnesium (ZAM) structural steel configurations. ZAM coatings provide corrosion resistance up to 3 times greater than traditional galvanizing. This extends the service life of industrial equipment, solar racking, and outdoor enclosures in high-humidity or coastal locations.
Strengthening our material supply chain through strategic alliances.
Technical answers to critical questions regarding cold-rolled steel coils, customization, and logistics.
Hot-rolled steel is processed at elevated temperatures (typically over 1100°C), resulting in a rough surface finish with scale and broader dimensional tolerances. Cold-rolled steel is further processed at room temperature, which increases strength through strain hardening, improves flatness, reduces thickness deviation to microns, and yields a smooth, scale-free surface finish ready for direct coating or painting.
We supply a wide range of steel grades under ASTM, DIN, EN, JIS, and GB standards. Typical grades include commercial steel (CS Types A, B, C), drawing steel (DS Types A, B), deep-drawing steel (DDS), extra-deep drawing steel (EDDS), and structural steel (SS) with customizable yield strengths ranging from 280 MPa up to 550 MPa.
Cold-rolled steel is sensitive to moisture. We protect coils by applying rust-inhibitive oils (ranging from light to heavy, based on buyer preference) along with vacuum-sealed vapor corrosion inhibitor (VCI) paper wrapping. The outer packaging includes steel bands and edge protectors to safeguard the coil structure during sea shipping.
We offer multiple surface finishes, including dull finish (matte, Ra 0.6 to 1.9 µm) which is ideal for paint adhesion, bright finish (highly polished, Ra < 0.2 µm) which is ideal for plating, and standard commercial semi-bright finishes suited for general fabrication and stampings.
For custom thickness, width, or specific mechanical qualities, the standard MOQ typically ranges from 15 to 25 metric tons (roughly equivalent to one 20ft container load). Lead times range from 20 to 35 days from receipt of a confirmed Letter of Credit (L/C) or Deposit, depending on current production scheduling and mill loading.
Browse our broader range of structural materials, wire ropes, and protective building products.
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