Explore our engineered structural steel offerings, manufactured under strict international quality controls.
In global manufacturing, Hot Rolled (HR) Steel Coil Grade Q235 represents the cornerstone of structural carbon steel production. Governed by the national standard GB/T 700 in China, Q235 is categorized as a low-carbon structural steel designed for optimal weldability, ductility, and mechanical performance. The letter "Q" denotes the Yield Point (Qu Fu Dian), while "235" indicates its minimum yield strength of 235 Mega-Pascals (MPa) for material thicknesses up to 16mm.
From a metallurgical perspective, Q235 maintains a ferrite-pearlite microstructure. This basic composition delivers exceptional mechanical flexibility, enabling structural engineers to form, cut, weld, and bend the steel sheet without inducing micro-cracks or structural failure. The alloy is divided into four quality classifications—Q235A, Q235B, Q235C, and Q235D—distinguished primarily by their chemical control thresholds for phosphorus (P) and sulfur (S), and their requirement for Charpy V-notch impact testing at varying temperatures.
Understanding the exact chemical limits is crucial for international procurement teams validating materials against alternative international standards such as ASTM A36, JIS G3101 SS400, or EN 10025 S235JR. Below is the chemical threshold breakdown for Q235 Grade Steel Coils:
| Grade Quality | C (Max %) | Mn (%) | Si (Max %) | P (Max %) | S (Max %) | Impact Temp (°C) |
|---|---|---|---|---|---|---|
| Q235A | 0.22% | 0.30 - 0.65% | 0.35% | 0.045% | 0.050% | Not Required |
| Q235B | 0.20% | 0.30 - 0.70% | 0.35% | 0.045% | 0.045% | 20°C (Charpy V-Notch) |
| Q235C | 0.17% | 0.35 - 0.80% | 0.35% | 0.040% | 0.040% | 0°C (Charpy V-Notch) |
| Q235D | 0.17% | 0.35 - 0.80% | 0.35% | 0.035% | 0.035% | -20°C (Charpy V-Notch) |
Mechanically, Q235 exhibits a tensile strength ranging from 370 to 500 MPa. Its elongation rate, depending on the thickness of the sheet, spans 21% to 26%. This substantial plasticity facilitates seamless deep drawing, bending, and roll-forming processes, which is why it remains the structural backbone of general mechanical components, architectural supports, and roll-formed profiles.
A premier global steel manufacturer and exporter utilizing China's largest industrial supply chain.
Strategically situated in Tangshan City, Hebei Province—the heart of China’s steel industry—Hansheng Technology (Hebei) Co., Ltd. benefits from an exceptional logistics network. Our facility is located just 150 kilometers from the Tianjin seaport and 150 kilometers from the capital, Beijing. This premium location ensures rapid, efficient global shipping and domestic distribution.
Since our inception in 2006, we have evolved into a comprehensive, export-oriented enterprise specializing in the manufacturing and customization of premium-grade steel products. We operate 8 high-efficiency production lines with a total annual production capacity of 300,000 metric tons (with capabilities expanding to 650,000 tons with cooperative mill alignments). Our extensive 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.
Advanced rolling, drawing, and hot-dip treatment lines.
Guaranteed high-capacity supply for global projects.
Direct transit to Tianjin port minimizes shipping times.
Exporting since 2006 to over 45 countries worldwide.
The global demand for Hot Rolled steel coils remains robust, with Q235 acting as the fundamental structural medium. In construction, ship-building, logistics equipment, and automotive chassis production, procurement departments select carbon steel primarily based on localized cost-efficiency and mechanical consistency. Chinese manufacturing centers, particularly in the Hebei-Tangshan region, represent more than half of the world's hot-rolling production capacity, producing high-quality material at scale.
Source factories in China maintain a massive competitive advantage in producing Q235 hot rolled coils due to several structural factors:
A major purchasing trend for international buyers is the shift from standard master coils to customized hot-rolled steel strips. Hansheng Technology meets this demand by providing tailormade options including:
Q235 Hot Rolled Steel is utilized across diverse industrial applications, engineering projects, and infrastructure developments.
Q235 serves as the core carbon wire rod element, drawn down to wire sizes for industrial mesh, binding, and fencing applications.
Hot-rolled Q235 coils are slit and leveled into flat steel bars, utilized in metal framing, industrial brackets, and structural supports.
Formed into robust safety walking planks and scaffolding tubes. High load-bearing capacity guarantees site safety.
Q235 HR coils are cold rolled and fed into continuous hot-dip galvanizing lines, creating corrosion-resistant roofing sheets.
Direct application in structural chassis, shipping containers, storage silos, and transport railcars due to its high weldability.
Coils are cleaned, coated with primers and protective topcoats, and roll-formed into wall cladding and aesthetic panels.
High-frequency welded (HFW) pipes are formed from Q235 steel strips, widely used in fluid transport and framing construction.
Coated with ZAM alloys, Q235 serves as the mechanical base for solar racking systems designed to withstand outdoor weathering.
International procurement managers looking for hot-rolled steel coil suppliers must evaluate more than just baseline pricing. Supply chain stability, consistency, quality inspection, and contract compliance form the foundation of successful global logistics. At Hansheng Technology, we prioritize these criteria to ensure reliable deliveries.
Focusing on prime building materials to create a better life for human beings by delivering certified structural steel globally.
Strict pre-shipment inspections for every batch, supported by ISO 9001:2000, ISO 14001, and third-party certifications (SGS, BV, TUV).
Comprising 35+ steel professionals who manage international trade, freight routing, custom processing, and technical support.
Hansheng Technology operates under the firm philosophy of "honoring contracts and keeping promises." We view our clients not just as customers, but as valued partners, maintaining a strong track record of contract fulfillment. Our strategic positioning in Tangshan, supported by offices in major industrial hubs throughout China, allows us to source raw materials efficiently, secure cargo space at low freight rates, and provide real-time updates from the production floor to the port container yard.
Inside Hansheng's manufacturing facility and cold/hot rolling lines in Tangshan, Hebei.
Production Yard Area
Coil Slitting Plant
Heavy Strip Decoiling
Precision Leveling Line
Automatic Wire Drawing
Sheet Rolling Station
Coil Packaging Yard
Finished Goods Warehouse
Demonstrated engineering excellence through successful supply runs to international infrastructure projects.
High-capacity structural H-Beams manufactured from Q235B steel substrate, shipped to Dubai for industrial warehouse framing.
Custom 12mm hot rolled carbon steel plates delivered to Dammam, Saudi Arabia, for local tank construction.
JIS standard structural steel channels manufactured from Q235 carbon steel, shipped to Busan for ship-building frame assemblies.
High-tensile hot-dip galvanized wire reels delivered to Florida, USA, for agricultural and industrial fencing installations.
High-tensile prestressed concrete steel strand shipments, supporting bridge girder construction in Manila.
Heavy U-type steel sheet piles used for marine retaining wall installations, protecting harbor terminals in Jakarta.
Steel structure components supplied in 2013 for the national-level summit facility.
Clinker production line project in 2014, utilizing heavy machinery structural steel framing.
Prefabricated light-gauge carbon steel framing project exported to Canada in 2020.
We maintain strategic alliances with China's largest state-owned and private steel conglomerates.
This technical FAQ section addresses common queries from procurement managers and structural engineers sourcing carbon steel coils.
We offer a comprehensive range of structural sections, wire rods, and coated steel solutions.
Hanshen
