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Help CenterSteel Coil & Strip & Hot Rolled Coil，A283 S235JR, S355JR, ST37-2, ST52-3, Q235B, Q355B SS400, SM490 A36
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1. Product Overview
Hot rolled coil is a basic core profile in the steel industry and one of the most widely used raw materials for industrial processing and infrastructure projects. In the industry, hot rolled coil, hot rolled steel coil and hot rolled plate coil are collectively referred to as hot rolled plate materials, serving as the core base material for downstream deep processing.
Manufactured from continuous casting slabs, hot rolled coil is produced through high-temperature heating, high-pressure descaling, continuous rough and finish rolling, laminar cooling and coiling forming. The high-temperature rolling process endows hot rolled steel coil with excellent plasticity and toughness, suitable for various bending, stamping and welding processes.
Compared with cold-rolled plates, hot rolled plate coil features lower production cost, wider specification coverage and stable structural strength without work hardening. It can be directly used for semi-finished product processing and structural fabrication. Ordinary hot rolled coil can be put into production without complicated pretreatment, delivering extremely high practicality.
Most industrial hot rolled coils on the market are produced by standardized rolling. High-quality hot rolled steel coil has a flat plate surface and uniform thickness without warping and deformation, while premium hot rolled plate coil boasts excellent appearance, making it the preferred raw material for steel structure, mechanical manufacturing and sheet metal processing industries.
2. Production Standards
All hot rolled coils, hot rolled steel coils and hot rolled plate coils produced by our factory strictly comply with national and international general production standards, ensuring stable and compliant dimensional accuracy, mechanical properties and surface quality of each hot rolled coil.
Domestic Standards: Strictly implement GB/T 700, GB/T 1591, GB/T 3274 and other national standards, covering the production requirements of full-range carbon structural steel and low-alloy high-strength steel hot rolled plate coils. Domestic hot rolled steel coils fully meet the standards of domestic engineering and equipment processing.
International Standards: Compatible with mainstream international standards such as ASTM, JIS, DIN and EN. We can produce foreign trade grade hot rolled coils including A36, SS400 and S235JR to meet the quality requirements of export orders and foreign-funded enterprises.
All factory-outlet hot rolled plate coils have compliant parameters and stable performance. Various specifications of hot rolled steel coils can be mass-produced according to customer customized standards and industry-specific standards to adapt to the usage requirements of hot rolled coils under different working conditions.
3. Common Materials and Grades
Ordinary Carbon Hot Rolled Coil: The mainstream grade is Q235B. This hot rolled coil features high cost performance, excellent plasticity and good weldability. It is the most widely used hot rolled steel coil for general processing, ordinary steel structures and sheet metal accessories, suitable for most conventional processing scenarios.
Low-Alloy High-Strength Hot Rolled Coil: The mainstream grade is Q355B. Compared with ordinary materials, this hot rolled plate coil has higher strength, better bearing capacity and excellent impact resistance, widely used in heavy-duty steel structures, construction machinery, bridge supports, equipment bases and other heavy-load scenarios.
High-Quality Carbon Hot Rolled Coil: Including 20#, 45# and other grades with high material purity and uniform performance. Precisely rolled hot rolled steel coils are suitable for high-precision processing scenarios such as precision stamping, mechanical parts and mold base plates.
Our full range of hot rolled coils, hot rolled steel coils and hot rolled plate coils are complete in materials. We can customize coils with different grades and performance parameters to fully meet the needs of civil infrastructure, industrial manufacturing and foreign trade export scenarios.
4. Core Technical Parameters and Specifications
Specification Range: The thickness of conventional hot rolled coils is 1.2mm-20mm, with mainstream widths of 1000mm, 1250mm, 1500mm, 1800mm and 2000mm. The weight of a single coil ranges from 5 to 28 tons. Slitting, flattening and fixed-length shearing are supported, and hot rolled plate coils of various sizes can be customized and processed.
Dimensional Accuracy: The thickness and width tolerances of hot rolled coils are strictly controlled. The plate surface is flat without waves and edge warping. The hot rolled steel coils in the same batch have uniform thickness and regular plate shape, and the flattened plates have high flatness without secondary leveling.
Surface Quality: Conventional hot rolled coils have original black surfaces without peeling, bubbles, cracks and large-area rust spots. Pickled hot rolled coils are available with clean and smooth surfaces, which greatly improve the effect of subsequent spraying, welding and stamping.
Mechanical Properties: Finished hot rolled plate coils have stable tensile strength, yield strength and elongation, with good toughness, easy bending, stamping and welding performance, and no cracking or deformation during cold processing, adapting to various cold and hot processing technologies.
Processing Performance: Hot rolled steel coils have no residual internal stress, and can be easily processed by bending, punching, cutting, rolling, welding, polishing and other deep processing methods, suitable for various automatic production lines.
5. Standard Production Process
Strict inspection of high-quality slab raw materials to screen qualified raw materials, guarantee the basic quality of hot rolled coils, hot rolled steel coils and hot rolled plate coils from the source, and eliminate defective products from production.
The slabs are heated by stepping high-temperature heating furnace with uniform temperature rise to ensure rolling stability, followed by high-pressure water powerful descaling to remove surface oxide layers and improve the surface finish of hot rolled coils.
Multi-pass continuous rough and finish rolling accurately controls the thickness, width and plate shape of hot rolled plate coils, ensuring uniform size and compliant tolerance of each hot rolled steel coil.
Precise computer laminar flow cooling stabilizes the metallographic structure of steel, locks the mechanical properties of hot rolled coils, and avoids deformation and cracking in subsequent processing.
After coiling forming, plate shape correction and end trimming to complete the basic forming of hot rolled coils, surface inspection, dimensional re-inspection and performance sampling inspection are carried out.
Qualified hot rolled coils, hot rolled steel coils and hot rolled plate coils are bundled, labeled and put into storage with full-process standardized quality inspection to ensure all delivered products meet quality standards.
6. Main Application Fields
Steel Structure Engineering: Hot rolled plate coils are core raw materials for factory steel structures, grid structures, bridge supports, curtain wall frames and tower structures. High-strength hot rolled steel coils deliver stable bearing capacity and high safety.
Mechanical Manufacturing Industry: Hot rolled coils are widely used for manufacturing mechanical equipment shells, bases, brackets, guard plates and stamping parts, featuring convenient processing and good forming effect, suitable for the production of various mechanical parts.
Sheet Metal and Hardware Processing: General sheet metal, equipment boxes, hardware accessories, shelf profiles and conveyor equipment parts are all made of hot rolled coils as basic materials, which can be flattened and slit on demand.
Automobile and Construction Machinery Industry: High-quality hot rolled steel coils are selected for automobile chassis parts, construction machinery cover parts, agricultural machinery parts and heavy industrial structural parts, whose strength and toughness meet the requirements of heavy-load working conditions.
Infrastructure and General Industry: Hot rolled plate coils are widely used in pipe guard plates, embedded parts, steel structure accessories, municipal engineering components and other scenarios with prominent cost performance advantages, serving as essential profiles for industrial infrastructure.
7. Core Product Advantages
Stable and Reliable Performance: Hot rolled coils have uniform metallographic structure and balanced mechanical properties, with excellent bending, stamping and welding performance, low cracking and deformation rate during processing and high finished product qualification rate.
Complete Specifications and Wide Adaptability: Hot rolled steel coils cover all mainstream thickness and width specifications, supporting slitting, flattening and fixed-length customization to meet the processing needs of different industries and equipment.
Outstanding Cost Performance: Compared with cold-rolled plates, hot rolled plate coils have lower production and procurement costs, suitable for large-scale engineering and mass processing production, effectively reducing customers’ material costs.
Strong Processing Adaptability: Hot rolled coils have high plasticity, support various cold and hot deep processing technologies, adapt to automatic production lines with high processing efficiency and no complicated pretreatment required.
Full Quality Control: Material quality certificates are provided for each batch of hot rolled coils, hot rolled steel coils and hot rolled plate coils. The batches feature consistent performance and stable appearance without quality deviation in mass supply, with perfect after-sales guarantee.
8. Processing Services, Packaging, Delivery Cycle and Purchasing Instructions
Value-Added Processing Services: Our factory provides customized processing services for hot rolled coils including flattening, slitting, shearing, bending, sandblasting and pickling. We can directly process raw coils into finished plates and special-shaped accessories to save customers’ secondary processing procedures.
Professional Packaging Protection: All hot rolled steel coils and hot rolled plate coils are wrapped with waterproof and rust-proof packaging externally and reinforced with steel strip binding and end protection to avoid moisture, rust, deformation and wear during transportation, suitable for long-distance land transportation and sea export.
Flexible Delivery Methods: Support multiple trade terms such as EXW, FOB and CIF. Hot rolled coils can be sold in whole coils, slit on demand and supplied in batches with sufficient spot inventory and stable supply.
Delivery Cycle Instructions: Conventional in-stock hot rolled coils, hot rolled steel coils and hot rolled plate coils can be delivered within 3-5 working days after order confirmation; standard customized size and conventional material coils take 5-7 working days for production; special thickness, special width and customized pickling & finishing hot rolled plate coils require 7-10 working days of production. Bulk orders support batch delivery negotiation, and urgent orders can be arranged for priority production.
Custom Purchasing Guidelines: When purchasing hot rolled coils, customers can specify material grade, thickness & width, weight, processing requirements, plate shape standards and special process requirements. We can customize exclusive hot rolled steel coils and hot rolled plate coils adapted to actual working conditions.
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