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7 Key Criteria for Evaluating Sheet Steel Quality in Manufacturing
Sheet steel is manufactured through a stringent process that must meet high technical standards, ensuring confidence for buyers. Understanding this, THACO INDUSTRIES shares the 7 criteria for evaluating sheet steel quality to help customers choose the most suitable supplier based on their usage needs and project specifications.
Sheet Steel Composition
Sheet steel is formed by rolling flat billets at high temperatures, resulting in various sizes and thicknesses to meet diverse application needs. It is commonly classified into cold-rolled and hot-rolled sheet steel.
Advantages of Sheet Steel
- High hardness and durability, excellent load-bearing capacity, and resistance to warping during fabrication and transportation.
- Available in various thicknesses, sizes, and grades of steel. Each grade has unique physical and chemical properties suited to specific project requirements.
- Cold-rolled sheet steel components offer high precision and aesthetic quality.
- Hot-rolled sheet steel is easy to store and resistant to environmental damage.
Common Sheet Steel Specifications Table
| No. | Dimensions: T*W*L (mm) | Standard | Weight (Kg/sheet) |
|---|---|---|---|
| 1 | 2*1250*2500 | SS400 – China | 49.06 |
| 2 | 3*1500*6000 | SS400 – China | 211.95 |
| 3 | 4*1500*6000 | SS400 – Russia | 282.6 |
| 4 | 4*1500*6000 | SS400 – Arab | 353.3 |
| 5 | 5*1500*6000 K | SS400 – Russia | 353.25 |
| 6 | 6*1500*6000 | SS400 – China | 423.9 |
| 7 | 6*1500*6000 | SS400 – Russia | 423.9 |
| 8 | 6*1500*6000 K | SS400 – Russia | 423.9 |
| 9 | 6*1500*6000 | CT3 – KMK | 423.9 |
| 10 | 6*1500*6000 | CT3 – DMZ | 423.9 |
| 11 | 8*1500*6000 | SS400 – Russia | 565.5 |
| 12 | 8*1500*6000 K | SS400 – Russia | 565.5 |
| 13 | 8*1500*6000 | CT3 – DMZ | 565.5 |
| 14 | 8*1500*6000 | SS400 – China | 565.5 |
| 15 | 8*1500*6000 | CT3 – KMK | 565.5 |
Top 7 Standards for Accurate Sheet Steel Quality Assessment
Whether hot-rolled or cold-rolled, sheet steel must meet specific standards to ensure quality. Below are seven key standards commonly used in evaluating sheet steel, compiled by the TCVN/TC Technical Committee on Steel and published by the Ministry of Science and Technology.
Standard TCVN 6522:2018
This standard evaluates the quality of hot-rolled sheet steel and replaces TCVN 6522:2008, equivalent to ISO 4995:2014.
- Type: Hot-rolled structural quality sheet steel
- Scope: Applies to structural-quality hot-rolled sheet steel in grades HR235, HR275, HR355
- Purpose: Helps users understand requirements such as thickness, size, fabrication conditions, dimensional tolerances, coil shape, labeling, and customer information
- Inspection: Includes sampling, tensile testing, retesting, verification, and final inspection
Standard TCVN 10351:2014
This standard evaluates fabricated sheet steel and aligns with ISO 7452:2013.
- Type: Hot-rolled sheet steel – Dimensional and shape tolerances
- Scope: Applies to sheet steel rolled on reversing mills with nominal thickness of 3–400 mm and width ≥ 600 mm
- Purpose: Defines tolerances for thickness, width, length, flatness, squareness, and the methods of measurement
Standard TCVN 5709:2009
This standard replaces TCVN 5709:1993 for structural carbon steel sheet used in construction.
- Type: Hot-rolled carbon steel for construction – Technical requirements
- Scope: Widely applied to sheet steel, strip, shapes, bars, and sections in welded or other jointed structural systems
- Purpose: Clarifies steel grades, technical criteria, and test methods for selecting structural carbon steel
Standard TCVN 10357-1:2014
This standard for hot-rolled sheet steel corresponds to ISO 9444-1:2009.
- Type: Continuously hot-rolled stainless steel – Dimensional and shape tolerances – Part 1: Narrow strip and cut lengths
- Scope: Applies to narrow stainless steel strip under 600mm wide and their cut lengths
- Purpose: Provides information on product type and delivery conditions; dimensional tolerances (thickness, width, length) and methods of measurement; edge camber and squareness tolerances; flatness tolerances for cut lengths; coil form; and ordering framework for cut-to-length products
Standard TCVN 2058:1977
Issued by the State Committee for Science and Technology, this standard defines size and specification tolerances for thick hot-rolled steel sheet.
- Type: Thick hot-rolled steel sheet – Sizes and parameters
- Scope: Applies to hot-rolled sheet steel with thickness from 4 to 60 mm
- Purpose: Identifies standard dimensions and acceptable deviations in thickness, length, width, wave distortion, bulging, crescent curvature, shear tilt, and serration
Standard TCVN 6523:2018
This standard replaces TCVN 6523:2006 and is equivalent to ISO 4996:2014.
- Type: Hot-rolled structural quality sheet steel with high yield strength
- Scope: Applies to hot-rolled sheet steel with high yield strength using trace alloying elements
- Purpose: Provides details on dimensions, fabrication conditions, dimensional and shape tolerances, coil sizes, quality requirements, labeling, customer-supplied information, and the full inspection process including sampling, tensile tests, retesting, and final verification
Standard TCVN 6525-99
This standard is equivalent to ISO 4998:1996.
- Type: Continuously hot-dip galvanized structural carbon steel sheet
- Scope: Applies to galvanized carbon steel sheet in grades 220, 250, 280, 320, 350, 550; sheet or coil format with thickness from 0.25–5 mm and width of 600mm or more
- Purpose: Helps identify standards regarding coating systems, steel grades, manufacturing conditions, dimensional tolerances, coil sizes, surface quality, labeling, buyer-required information, and inspection process including sampling, testing methods, retesting, re-approval, inspection, and acceptance
Selecting a reputable sheet steel supplier is crucial in both construction and manufacturing. However, identifying a reliable supplier isn’t always straightforward. With nationwide distribution and an annual supply capacity of up to 100,000 tons, THACO INDUSTRIES is one of Vietnam’s leading suppliers of high-quality sheet steel for diverse sectors ranging from construction to industrial manufacturing.
