G330 GL Galvalume Steel Coil Requests | 21 24 Gauge and Roofing Sheet Coating Specification
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CoatingZ121~Z180HardnessFull Hard
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Spangle TypeRegular Spangle, Regular SpangleThickness0.21 mm ~ 0.50 mm, 0.20-0.50mm
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TypeSteel Coil, Steel CoilApplicationMaking Small Tools
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CertificateAPI , ISO 9001Delivery Time15-21 days
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GradeGalvalume Steel CoilLengthCustomized, Customized
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Oiled or Non-oiledNon-oiledProcessing ServiceCutting, Punching, Cutting, Decoiling
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Skin PassYesStandardASTM
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TechniqueCold Rolled BasedTolerance±1%
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SampleAvailableMOQ5 Tons
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Price termFOB CIF CFRSurfaceCoated, Chromated, Oiled, Anti-Finger Print
G330 GL Galvalume Steel Coil Requests | 21 24 Gauge and Roofing Sheet Coating Specification
Galvalume steel coil is named in the body grade field with Steel Coil type, customized length and 0.20–0.50mm thickness descriptions. The actual specification is Customized without a selected coating or dimension.
The title GL and galvanized wording need an agreed coating system rather than assumed equivalence. G330, 21 gauge and 24 gauge require a defined grade and dimensional basis. The Z121–Z180 field does not independently verify the proposed aluminum-zinc composition or coating mass.
For roofing-sheet evaluation, provide base metal, thickness and coating acceptance. No strength, corrosion-life or formed-sheet test is supplied. Request material and coating documents before assigning service performance; broad standard or certificate labels do not establish the selected supply specification.
