Q235B · St3sp · 1.5–12 mm · width 1 000–2 000 · GOST 19903
Hot-rolled coil
Hot-rolled coil in Q235B, St3sp and 09G2S, 1.5–12 mm thick, for cutting, slit strip, roll-formed profiles and welded tube
DC01 · 08ps · SPCC · 0.4–3 mm · width 1 000–1 500 · GOST 19904
Cold-rolled coil
Cold-rolled annealed coil in DC01, 08ps and SPCC, 0.4–3 mm thick, for pressing, painting and galvanizing
- GOST 19904-90
- GOST 16523-97
- GOST 9045-93
- GB/T 708-2019
- GB/T 5213-2019
- EN 10130:2006
- EN 10131:2006
- ASTM A1008/A1008M
- JIS G3141:2017
- 08ps
- 08kp
- 08Yu
- DC01
- DC03
- DC04
- SPCC
Section
Key parameters
- Thickness
- 0.4–3.0 mm
- Width
- 1 000–1 500 mm; common 1 000, 1 250, 1 500
- Steel grade
- 08ps, 08kp, 08Yu, DC01–DC04, SPCC
- Condition
- annealed and skin-passed; work-hardened to specification
- Surface
- matte or smooth, oiled; dry to specification
- Edge
- trimmed edge
- Coil inside diameter
- 508 or 610 mm
Sizes and weight
Pick a size in the table: each row has a quantity field in tonnes and an “Add to specification” button. Rows from several items go out as one request.
Calculate for your volume
The same formula as the table below: metres to tonnes and tonnes to metres.
—kg per metre
—total, t
—metres per tonne
Formula
| t, mm | Weight, kg/m² | Sheet 1 500×6 000, kg | Add to specification |
|---|---|---|---|
| 0.4 | Weight, kg/m²3.14 | Sheet 1 500×6 000, kg28.3 | Add to specification |
| 0.5 | Weight, kg/m²3.92 | Sheet 1 500×6 000, kg35.3 | Add to specification |
| 0.6 | Weight, kg/m²4.71 | Sheet 1 500×6 000, kg42.4 | Add to specification |
| 0.7 | Weight, kg/m²5.49 | Sheet 1 500×6 000, kg49.5 | Add to specification |
| 0.8 | Weight, kg/m²6.28 | Sheet 1 500×6 000, kg56.5 | Add to specification |
| 1 | Weight, kg/m²7.85 | Sheet 1 500×6 000, kg70.6 | Add to specification |
| 1.2 | Weight, kg/m²9.42 | Sheet 1 500×6 000, kg84.8 | Add to specification |
| 1.5 | Weight, kg/m²11.8 | Sheet 1 500×6 000, kg106.0 | Add to specification |
| 2 | Weight, kg/m²15.7 | Sheet 1 500×6 000, kg141.3 | Add to specification |
| 2.5 | Weight, kg/m²19.6 | Sheet 1 500×6 000, kg176.6 | Add to specification |
| 3 | Weight, kg/m²23.5 | Sheet 1 500×6 000, kg211.9 | Add to specification |
Plate mass per m² is 7.85·t, where t is the thickness in mm; sheet mass is for the 1 500×6 000 mm format.
Theoretical weight at steel density 7.85 g/cm³. Actual batch weight is by scale and mill certificate.
Description
Cold-rolled coil is made from hot-rolled coil: the strip is pickled to remove scale, cold-reduced to the required thickness, annealed to remove work hardening and skin-passed — lightly reduced for smoothness and flatness. The result is strip 0.4–3 mm thick with a matt or smooth surface, a tight thickness tolerance and enough ductility for pressing. The surface is oiled to protect against corrosion in storage and transit.
Details
The grades differ by purpose and drawability. 08ps and 08kp to GOST 16523 are low-carbon steels for general use, for bending and shallow pressing; 08Yu to GOST 9045 is aluminium-killed steel for complex drawing. Mills in China designate the same range DC01–DC04 to GB/T 5213: as the number rises, elongation increases and carbon content falls. SPCC to JIS G3141 is commercial quality, equivalent to DC01 and 08ps. For deep-drawn parts the grade is specified separately rather than substituted with DC01.
Inspection at the mill before shipment: thickness with a micrometer on the outer wrap at the edges and in the middle of the width, width with a tape, tightness of winding and telescoping, absence of dents, scratches, oil stains and rust marks on the outer wraps. The mill test certificate (MTC) is checked against the heat number on the tag: grade, chemical composition, yield strength, tensile strength, elongation, and for deep-drawing grades the ductility indices required by the standard. Marking, the tag, the moisture-proof wrapping and the strapping are checked.
Applications
- pressed housings for household appliances, cabinets and switchboards
- vehicle assembly parts and body repair
- drywall profiles and ventilation ducts
- base for galvanizing and colour coating
- furniture hardware, racking, steel doors
- slit strip for thin-walled electric-welded tube
Packing and shipment
The coil is wrapped in moisture-proof paper and steel sheet, strapped with steel band around the circumference and through the eye; the end faces are closed with protective rings; mill tag with heat number, grade, thickness, width and weight.
Grade equivalents
Equivalents are the nearest, not identical: the exact grade and standard are written into the contract.
| GOST | GB (China) | ASTM | EN | Note |
|---|---|---|---|---|
| St3sp | GB (China)Q235B | ASTMA1011 CS Type B / A36 | ENS235JR | NoteCorrespondence by mechanical properties; the chemical composition and impact toughness requirements differ between the standards — check against the MTC. |
| 09G2S | GB (China)Q355B (Q345B) | ASTMA572 Grade 50 | ENS355JR | NoteNearest analogue: yield strength is comparable, but 09G2S carries more manganese and silicon alloying. |
| 08ps | GB (China)DC01 / SPCC | ASTMA1008 CS Type B | ENDC01 | NoteCold-rolled low-carbon steel for general use; deep drawing calls for DC03–DC04 or 08Yu. |
| 08ps ZN (GOST 14918) | GB (China)DX51D+Z | ASTMA653 CS Type B | ENDX51D+Z | NoteGalvanized base for bending and roll forming; the zinc class is specified separately (Z100–Z275). |
| 250 / 350 (GOST 14918) | GB (China)S250GD+Z / S350GD+Z | ASTMA653 SS Grade 37 / 50 | ENS250GD+Z / S350GD+Z | NoteStructural galvanized grades with a specified yield strength; ASTM SS is the nearest analogue by strength. |
| 08Kh18N10 | GB (China)06Cr19Ni10 | ASTM304 | EN1.4301 | NoteAustenitic chromium-nickel steel; the GOST grade allows a higher carbon content than 304L. |
| 03Kh17N14M3 | GB (China)022Cr17Ni12Mo2 | ASTM316L | EN1.4404 | NoteMolybdenum-bearing low-carbon austenitic steel; close correspondence. |
| 12Kh17G9AN4 | GB (China)12Cr17Mn6Ni5N | ASTM201 | EN1.4372 | NoteNearest analogue: chromium-manganese steel with nitrogen, nickel partly replaced by manganese; corrosion resistance is lower than that of 304. |
Equivalents are the closest match, not identical: chemistry and tolerances differ between standards. The exact grade and standard are written into the contract.
The batch is checked against the order at the mill before shipment: sizes, markings, heat numbers on the certificate and tags, packing
Documents
What arrives with the steel
01
Mill test certificate (MTC)
Heat number, chemical composition, mechanical properties and standard for every heat in the batch.
02
Photo-documented inspection report
Measurements, markings, packing, weighing and bundle numbers, drawn up at the mill before shipment.
03
Specification and packing list
Items, sizes, quantities and mass by bundle: what the warehouse acceptance is checked against.
04
Certificate of origin
Confirms the mill and country of manufacture for customs clearance.
Related items
DX51D+Z · Z100–Z275 · 0.3–3 mm · width 1 000–1 500 · GOST 14918
Galvanized coil
Hot-dip galvanized coil DX51D+Z with zinc weight Z100–Z275, 0.3–3 mm thick, for profiled sheeting, ventilation and profiles
St3sp · Q235B · DC01 · 0.5–6 mm · width 20–630 · GOST 6009
Slit strip
Strip slit lengthwise from coil, 20–630 mm wide and 0.5–6 mm thick, for electric-welded tube, profiles and banding
Buyer questions
How to read a mill test certificate (MTC) for coil
Four blocks in the certificate must agree: the heat number and coil number with the tag on the coil; the grade and standard with the specification; the chemical composition with the limits of the standard for that grade; the mechanical properties (yield strength, tensile strength, elongation) with the values required by the standard. For galvanized coil the zinc coating weight is added, for colour-coated coil the type and thickness of the paint layer. The bureau checks the MTC against the heat at the mill before shipment and hands over the original with the batch.
How hot-rolled coil differs from cold-rolled
Hot-rolled coil is rolled above the recrystallisation temperature: thickness from 1.5 mm, surface with mill scale, wider thickness tolerance. Cold-rolled coil is made from hot-rolled by pickling and cold reduction followed by annealing: thickness from 0.3 mm, smooth surface, tighter tolerance, and the steel is more ductile after annealing. Welded tube, profiles and structures take hot-rolled; pressing, body panels, galvanizing and painting take cold-rolled.
How coil tonnage is calculated
The theoretical weight of one square metre is 7.85 kg per millimetre of thickness; the coil weight is the strip area multiplied by that figure. Shipment and payment go by the actual weight from weighing, recorded in the certificate and on the tag; the difference from the theoretical weight comes from the thickness tolerance. The specification states tonnes, not the number of coils, and separately the maximum weight of one coil and the inside diameter to suit your decoiler.
What the bureau inspector checks at the mill before shipment
Thickness with a micrometer on the outer wrap at several points across the width and on the coil end face; width with a tape; telescoping and tightness of winding; condition of the edge and surface; the heat number on the tag against the MTC; for galvanized coil the uniformity of the coating and absence of bare spots, for stainless coil the grade with a positive material identification (PMI) analyser; packing and strapping. The result is an inspection report with photographs. Rejects recorded in the report are replaced; the replacement is supplied by the mill under its contract with the bureau.
How the batch is sized
The batch is sized to your volume — send your specification: grade and standard, thickness with tolerance, width, surface condition, for coated coil the zinc class and polymer type with the RAL colour, plus the inside diameter and maximum weight of a coil. Mills roll coil to order by width and thickness, so the more precise the specification, the fewer approvals are needed. The bureau selects a mill for that specification and returns confirmed delivery terms.
Price request
Send your specification and we will quote your batch
Price depends on grade, size, tonnage and delivery terms on the day of contract.
Request received