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Help CenterS355 Quality Assurance Carbon Steel Plate in Factory
Product Spotlights
Thickness options: 1mm, 2mm, 3mm, 4mm mild steel sheet
Factory direct – Strict QC, competitive pricing
Large stock – Short delivery time, custom sizes available
Applications: Construction, shipbuilding, pressure vessels, machinery
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Carbon Steel Plate – Backbone of Industrial Construction
Carbon steel plate is a flat-rolled steel product manufactured by hot rolling or cold rolling processes. With carbon as the primary alloying element (typically 0.05-0.50%), it offers an excellent balance of strength, ductility, weldability, and cost-effectiveness – making it the most widely used material in construction, machinery manufacturing, and infrastructure projects.
Key characteristics:
High strength – Tensile strength from 400-600+ MPa depending on grade
Excellent weldability – Suitable for arc welding, gas welding, and resistance welding
Good formability – Can be bent, rolled, stamped, and fabricated
Cost-effective – Most economical choice for structural applications
Available in large dimensions – Up to 3000mm width, 12000mm length
Material grades by application:
Grade Series |
Typical Grades |
Key Features |
Primary Applications |
General Structural |
Q235, SS400, S235JR, A36 |
Good balance of strength and weldability |
Buildings, bridges, general fabrication |
Higher Strength |
Q355, SS540, S355JR |
Higher yield strength for load-bearing structures |
Heavy construction, cranes, offshore |
Carbon Steel (Medium) |
20#, C22, S20C |
Good toughness, machinability |
Machinery parts, shafts, gears |
Carbon Steel (Higher) |
45#, C45, S45C |
Higher strength, wear resistance |
Heavy machinery, tools, molds |
Surface treatment options: Mill scale (as-rolled), pickled and oiled, painted (primer coated), galvanized, or other coatings upon request.
Each batch includes EN 10204 3.1 mill test certificate. Third-party inspection (SGS, BV, TÜV) supported. MOQ: 5 tons, trial orders welcome.
Key Specifications (Carbon Steel Plate):
Parameter |
Specification / Range |
Remarks |
Standards |
ASTM A36, A283; GB/T 700 (Q235), GB/T 1591 (Q355); JIS G3101 (SS400); EN 10025 (S235, S275, S355); DIN |
Others on request |
Grades (Structural) |
A36, Q235, Q355, SS400, S235JR, S275JR, S355JR |
Most common for construction |
Grades (Carbon/Machinery) |
20#, 45#, S20C, S45C, C22, C45, 1020, 1045 |
For mechanical parts, heat treatment |
Grade (Pressure Vessel) |
Q345R, P265GH, P355GH |
Boiler & pressure vessel applications |
Thickness |
1.5 mm – 200 mm |
Thin sheet to heavy plate |
Width |
1000 mm – 3000 mm |
Custom slitting/cutting |
Length |
2000 mm – 12000 mm |
Custom cut to size |
Surface Treatment |
As-rolled (mill scale), pickled & oiled, painted (primer), galvanized |
Custom coating available |
Edge |
Mill edge or sheared/slit edge |
– |
Density |
7.85 g/cm³ |
– |
Processing |
Cutting, drilling, bending, welding, laser/plasma cutting |
– |
Testing |
Chemical analysis (OES), tensile, hardness (HB), impact (Charpy), UT (optional) |
Mill cert provided |
Packaging |
Steel strapped bundles, wooden pallet, waterproof paper |
Seaworthy, ISPM 15 |
Product display
Packaging and shipping
Packing Details :
1) Bundle 2) In Bulk 3) Water proof plastic wrap. 4) As per Client's Requirements
20ft GP: 5.8m(length) x 2.13m(width) x 2.18m(high)
40ft GP: 11.8m(length) x 2.13m(width) x 2.18m(high)
40ft HG: 11.8m(length) x 2.13m(width) x 2.72m(high
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