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Help CenterFlat Steel & Customized Flat Steel,3×10×6000、5×20×6000、8×30×9000、10×50×12000、12×60×6000、15×80×9000
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I. Product Overview
Flat steel is a long strip of steel with a rectangular (or slightly rounded) cross-section, uniform thickness and fixed width, belonging to an important category of profiles. With its advantages of stable structure, convenient processing and wide application, it is widely used in construction, machinery, chemical industry, transportation and many other industries, and is an indispensable basic material in modern industrial production and infrastructure construction. This product is produced in strict accordance with national and industry standards, with reliable quality and excellent performance, which can meet the personalized use needs of different scenarios.
II. Classification and Characteristics of Production Processes
This product is mainly divided into two categories according to the production process: hot-rolled flat steel and cold-rolled flat steel. The two have their own focuses in terms of performance, appearance and application scenarios:
Hot-rolled flat steel: Adopting high-temperature rolling process, it has high production efficiency, moderate cost, moderate cross-sectional dimension accuracy and natural oxide scale (black skin) on the surface. It has good toughness, high strength and is not easy to break, so it is the first choice for construction, steel structure and other fields.
Cold-rolled flat steel: After cold rolling, it has a smooth and clean surface, high dimensional accuracy, good thickness uniformity and a bright surface. Its hardness is slightly higher than that of hot-rolled flat steel, and it is mostly used in mechanical manufacturing, precision instruments, decoration and other scenarios that require high appearance and accuracy.
III. Material Types and Application Scenarios
This product covers a variety of commonly used steel materials and can be customized according to customer needs. The core materials and their characteristics are as follows:
Carbon structural steel flat steel (Q235, Q355): The most widely used. Among them, Q235 flat steel has moderate strength, good plasticity and easy welding, which is suitable for general load-bearing structures; Q355 flat steel has higher strength and strong impact resistance, and is mostly used in high-rise buildings, heavy machinery and other scenarios that require high strength.
Special material flat steel: Including alloy flat steel, stainless steel flat steel, galvanized flat steel, etc. Galvanized flat steel forms a dense zinc layer on the surface through hot-dip galvanizing or cold galvanizing treatment, which has excellent anti-corrosion and anti-rust performance, can effectively extend the service life, and is suitable for outdoor, humid environments and chemical corrosion scenarios; alloy flat steel improves the wear resistance, high temperature resistance, corrosion resistance and other special properties of steel by adding alloy elements, meeting the needs of high-end industrial fields.
IV. Material Specifications, Sizes, Models and Chemical Composition Table
(I) Specifications, Sizes and Models
This product has complete specifications and models, supporting standard specifications and non-standard customization. The core specifications, sizes and corresponding models are as follows. The model is expressed as "thickness × width × length" (length can be customized, usually 6m, 9m, 12m):
Standard specifications and models: 3×10×6000, 5×20×6000, 8×30×9000, 10×50×12000, 12×60×6000, 15×80×9000, 20×100×12000, 30×150×6000, 40×180×9000, 60×200×12000
Non-standard customization: According to customer needs, products with thickness of 3mm-60mm, width of 10mm-200mm and any length can be customized, and the model can be marked according to customer requirements.
(II) Chemical Composition Table of Core Materials
Material Model |
Carbon (C) |
Silicon (Si) |
Manganese (Mn) |
Phosphorus (P) ≤ |
Sulfur (S) ≤ |
Other Elements |
Q235 |
0.17-0.24 |
0.35 |
0.35-0.65 |
0.045 |
0.045 |
No special addition |
Q355 |
0.18-0.24 |
0.55 |
1.20-1.60 |
0.045 |
0.045 |
Vanadium (V) 0.02-0.15 |
S235JR |
≤0.17 |
≤0.35 |
≤1.40 |
0.040 |
0.040 |
No special addition |
A36 |
0.25 |
0.40 |
1.00 |
0.040 |
0.050 |
No special addition |
Note: The unit of chemical composition is % (mass fraction). Non-standard materials can be adjusted according to customer needs, and the specific chemical composition shall be subject to the actual test report.
V. Specifications, Sizes and Processing Services
Specification range: Supporting standard specifications and non-standard customization, the standard flat steel has a thickness range of 3mm-60mm, a width of 10mm-200mm, and the length can be customized according to customer needs (usually 6m, 9m, 12m).
Processing services: Cutting, bending, welding and other subsequent processing can be provided to meet personalized installation needs.
Quality standard: Strictly control the dimensional tolerance, the cross-section is flat, free of burrs and cracks, and the surface has no obvious unevenness, inclusions and other defects, ensuring that each batch of products meets the quality standard and ensuring safe use.
VI. Delivery Cycle
The delivery cycle of this product is clear. For conventional standard specification products, the delivery cycle is 5-7 days; for non-standard customized products (including special materials, special sizes and special processing requirements), the delivery cycle can be appropriately extended according to the difficulty of customization. The specific cycle can be confirmed with the customer service to ensure on-time delivery without affecting the customer's construction and production progress.
VII. Wide Application Fields
Flat steel has a very wide range of uses, covering many industries, and the specific applications are as follows:
Construction industry: Commonly used in steel structure supports, curtain wall keels, fence railings, stair handrails, foundation embedded parts, etc., to provide stable support for building structures.
Mechanical manufacturing field: It can be used as raw material for mechanical parts, equipment supports and stamping parts. With good processing performance, it can be processed into various special-shaped parts.
Transportation field: Used in bridges, guardrails, rail transit accessories, etc., to bear the load brought by vehicles and the environment.
Chemical industry: Flat steel made of anti-corrosion materials is used in chemical equipment supports, pipeline supports, etc., to resist the erosion of corrosive media.
Other fields: It can also be used in decoration, agricultural machinery, power facilities, etc., with strong practicability.
VIII. Production Quality Control
In the production process of this product, national and industry standards such as GB/T 704-2015 are strictly implemented, and strict control is carried out from raw materials to finished products:
Raw material control: High-quality steel is selected, which has passed strict composition detection and performance testing to ensure that the raw materials are qualified.
Rolling processing: Advanced production equipment and technology are adopted to accurately control parameters such as temperature and pressure to ensure the dimensional accuracy and performance of products.
Finished product inspection: Before leaving the factory, it has passed multiple processes such as appearance inspection, dimension measurement and performance testing. Unqualified products are strictly prohibited from leaving the factory to ensure stable product quality.
IX. Product Advantages and After-Sales Service
Economy and environmental protection: The production process focuses on energy conservation and emission reduction, meeting the requirements of green production; the product has high cost performance and long service life, which can reduce subsequent maintenance costs, and can be recycled, conforming to the concept of circular economy.
After-sales service: Provide comprehensive technical consultation, size customization, processing supporting and other services to ensure that customers use it conveniently and at ease.
X. Summary
As a multi-functional and high-quality steel product, this product has the advantages of strength, toughness, processability and economy, which can be widely adapted to the needs of various industries and is a cost-effective basic profile choice. We always take quality as the core and customer needs as the guide, and are committed to providing customers with high-quality flat steel products and professional services to help the high-quality development of various industries.
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