DX51D+Z · 08ps · Z100–Z275 · t 0.3–3 · 1 250×2 500 · GOST 14918
Galvanized sheet DX51D+Z
Cold-rolled sheet with hot-dip zinc coating for ventilation, profiles, roofing and enclosures
PPGI · DX51D+Z · RAL · PE / PVDF · t 0.3–1.2 · 1 250×2 500 · GOST 34180
Pre-painted sheet PPGI
Galvanized sheet with a paint coating to the RAL catalogue for roofing, facades, sandwich panels and enclosures
GOST 34180-2017GOST 14918-2020GB/T 12754-2019GB/T 2518-2019EN 10169:2010EN 10346:2015ASTM A755/A755MDX51D+ZTDC51D+Z08ps
Parameters
| Parameters | |
|---|---|
| Thickness | 0.3–1.2 mm coated |
| Width | 1 000, 1 250 mm |
| Length | 2 000, 2 500, 3 000 mm; fixed length — to specification |
| Substrate | DX51D+Z, zinc Z100–Z275 g/m² |
| Polymer | polyester (PE), matte polyester, polyurethane (PUR), PVDF |
| Colour | per RAL catalogue; sample approved before ordering |
| Protective film | on the face side — to specification |
Sizes and weight
| t, mm | Weight, kg/m² | Sheet 1 500×6 000, kg |
|---|---|---|
| 0.3 | 2.36 | 21.2 |
| 0.35 | 2.75 | 24.7 |
| 0.4 | 3.14 | 28.3 |
| 0.45 | 3.53 | 31.8 |
| 0.5 | 3.93 | 35.3 |
| 0.6 | 4.71 | 42.4 |
| 0.7 | 5.49 | 49.5 |
| 0.8 | 6.28 | 56.5 |
| 1 | 7.85 | 70.6 |
| 1.2 | 9.42 | 84.8 |
Theoretical weight at steel density 7.85 g/cm³. Actual batch weight is by scale and mill certificate.
Description
Pre-painted sheet (PPGI) is a galvanized cold-rolled base on which a continuous coating line applies primer and a paint layer on the face side and a protective backing coat on the reverse; the finished coil is cut to length. Technical requirements are GOST 34180-2017, GB/T 12754-2019, EN 10169 and ASTM A755/A755M. The zinc under the paint protects the steel from corrosion, the polymer protects the zinc and gives the colour; the service life is set by both layers.
The substrate is DX51D+Z to EN 10346 or TDC51D+Z to GB/T 12754 with a zinc weight of Z100–Z275; for roofing and facades the specification usually calls for Z140 and above. The polymer type is chosen for the service conditions: polyester (PE) for most buildings, matt polyester for roofing and facades without glare, polyurethane (PUR) and PVDF for aggressive environments and long-term colour retention. The colour is set by a RAL catalogue number — RAL 9003, 3005, 6005, 8017 and others; gloss and layer thickness are fixed in the specification. The nearest GOST equivalent is sheet to GOST 34180 on an 08ps steel base.
At the mill before shipment the bureau's inspector measures sheet thickness with a micrometer, zinc and paint layer thickness with a coating gauge on the face and reverse sides, checks the colour against the RAL reference and the agreed sample, and checks adhesion and bend resistance on sample pieces by the methods of the standard. The surface is examined for missed paint, orange peel, inclusions, scratches and damage to the protective film. The mill test certificate (MTC) is checked against the pallet tag by heat number, zinc class, polymer type and thickness and RAL number. Packaging with edge protection is checked. The report with photographs is handed to you before shipment.
Applications
- roofing, facades and flashings of buildings
- facings of sandwich panels
- metal roof tiles, corrugated sheeting and siding
- enclosures of household appliances and retail equipment
- metal doors, cabinets and partitions
- fencing and gates
Packing and shipment
Pallet on a timber base: sheets with protective film, paper interleaving, steel corner protectors on the edges, wrapped in moisture-proof film, strapped with steel band; mill tag with grade, heat, zinc class, polymer type, RAL number and number of sheets.
Grade equivalents
| GOST | GB (China) | ASTM | EN | Note |
|---|---|---|---|---|
| St3sp / St3ps | Q235B | A36 | S235JR | Nearest equivalents. Q235B and S235JR specify impact toughness at +20 °C, GOST 14637 by category; A36 has a higher yield strength, 250 MPa. |
| 09G2S | Q355B (Q345B before 2018) | A572 Grade 50 | S355JR / S355J2 | Nearest equivalents by strength. The 09G2S category for impact toughness at −40 or −70 °C is specified separately; Q355B is tested at +20 °C. |
| 08ps | DC01 | A1008 CS Type B | DC01 | SPCC to JIS G3141 is the same class of general-purpose cold-rolled low-carbon steel. |
| 08ps to GOST 14918 | DX51D+Z | A653 CS Type B | DX51D+Z | The DX51D+Z designation in GB/T 2518 matches EN 10346. Zinc coating weight (Z100–Z275) is specified separately from the grade. |
| GOST 34180 based on 08ps | TDC51D+Z | A755 based on A653 | DX51D+Z to EN 10169 | The grade describes the steel substrate and the zinc. Type and thickness of the polymer layer, RAL colour and environment class are set by the specification. |
| 08Kh18N10 | 06Cr19Ni10 | 304 | 1.4301 (X5CrNi18-10) | 12Kh18N10T is the equivalent of titanium-stabilised grade 321, not of 304. |
| 03Kh18N11 | 022Cr19Ni10 | 304L | 1.4307 (X2CrNi18-9) | Low-carbon version of 304 (carbon up to 0.03 %) for welded structures without subsequent heat treatment. |
| 03Kh17N14M3 | 022Cr17Ni12Mo2 | 316L | 1.4404 (X2CrNiMo17-12-2) | Molybdenum 2–3 % to ASTM A240. Mills in China certify to ASTM or EN; the GOST grade is entered in the MTC on request as an equivalent. |
Equivalents are the closest match, not identical: chemistry and tolerances differ between standards. The exact grade and standard are written into the contract.
Related items
08ps · DC01 · SPCC · t 0.5–3 · 1 250×2 500 · GOST 19904
Cold-rolled sheet 08ps
Cold-rolled low-carbon steel sheet with close thickness tolerance and clean surface for stamping, bending and painting
Buyer questions
How to read a mill test certificate for sheet
In the certificate (MTC) the mill states the standard and grade, heat number, thickness and format, chemical composition of the heat, mechanical test results and batch number. We check the heat number against the tag on every bundle and the marking on the sheets, and the composition and properties against the requirements of the standard named in the specification. A certificate without a heat number, or with a composition outside the limits of the standard, is grounds for not accepting the batch.
How St3sp differs from St3ps and from Q235B
St3sp is killed steel, fully deoxidised; St3ps is semi-killed. For welded structures and service at sub-zero temperatures St3sp with a category to GOST 14637 is usually specified. Q235B is the Chinese grade of the same class with a yield strength of 235 MPa minimum and an impact test at +20 °C. A mill in China issues the certificate to GB/T 700 or, under contract, rolls the plate to GOST requirements and states this in the MTC.
How sheet tonnage is calculated
Theoretical weight per square metre is 7.85 kg for every millimetre of thickness; the weight of a sheet is thickness multiplied by area and by 7.85. Actual weight differs because of the thickness tolerance: a minus tolerance makes the batch lighter than theoretical. In the specification we fix which weight the batch is settled by — theoretical or actual by weighing at the mill — and the same weight goes into the packing list.
What is checked during inspection at the mill
Thickness with a micrometer at several points of every sample sheet, width and length with a tape, flatness and squareness of cut, surface for laminations, laps and scale, marking and tags, certificate by heat and composition, packaging. For coated products — zinc or polymer thickness with a coating gauge; for stainless steel — a composition check with a portable analyser. The result is a report with photographs before shipment.
How a batch is calculated
The batch is calculated for your volume — send the specification: grade and standard, thickness, sheet format, coating and surface, quantity in sheets or tonnes, certificate requirements. From the specification we find a producing mill, agree the rolling and packaging terms and reply with a calculation.
Price request
Send your specification and we will quote your batch
Steel pricing depends on grade, size, tonnage and delivery terms on the day of contract. A number on the page would be wrong by the time you read it.
Request received