Roofing and Building Envelope Packages
Building envelope buyers often face delays and cost overruns when sourcing coated coil, tinplate roofing sheets, and galvanized sections from separate suppliers. Jialu Metal consolidates these materials into one package, so a single order covers all envelope components with one inspection window, one shipment and one c
What Buyers In This Position Are Dealing With
Building envelope buyers often face delays and cost overruns when sourcing coated coil, tinplate roofing sheets, and galvanized sections from separate suppliers. Jialu Metal consolidates these materials into one package, so a single order covers all envelope components with one inspection window, one shipment and one contract, eliminating the need to coordinate multiple mills and delivery schedules.
Pain Points
- Separate orders for coated coil, tinplate and galvanized sections lead to mismatched delivery dates and overlapping inspection visits
- Different mill certificates and testing standards for each material family increase documentation complexity
- Custom surface treatments and coating weights require multiple supplier negotiations and inconsistent quality control
- Small quantities of specialty finishes like color printing or mirror finish are often rejected or priced poorly by general stockists
- Inconsistent coil dimensions and hardness grades across suppliers cause installation issues on site
What The Specification Usually Requires
- Color coated steel coil in ASTM-A653, JIS G3302 and EN10147 standards with G250 to G550 material and AZ150G/m² or customized aluminum-zinc coating
- Galvalume steel coil with thickness 0.12–6.0 mm, width 600–1500 mm, coil ID 508/610 mm, and hardness options soft, medium or full hard
- Galvanized steel coil with zinc coating from 30–600 g/m², G40/G60/G90 or customized, with chromed, skinpass or oiled surface treatment
- Corrugated tinplate sheet in GB/T 2520-2000, JIS G3303-2002 and DIN EN 10203-1991 standards, MR/SPCC/SPCH material, tin coating 1.1–11.2 g/m², T2 hardness
- Tinplate sheet tile with same standards as corrugated sheet, with bright, stone, silver, matte, mirror or color printing finishes
- Square and rectangular steel pipe in ASTM A500 Grade B, ASTM A513, ASTM A36, EN 10210 and EN 10219 grades, seamless or welded, S235 to S355, with various hardness and surface options
Material We Supply For This Work
Steel CoilColor Coated Steel Coil
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Steel CoilGalvalume Steel Coil
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Steel CoilGalvanized Steel Coil
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TinplateCorrugated Tinplate Sheet
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TinplateTinplate Sheet Tile
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Steel PipeSquare / Rectangle Steel Pipe
View specifications →Typical Scenarios
- Commercial roofing project using color coated steel coil for main panels and galvalume coil for eaves and flashings
- Industrial warehouse with corrugated tinplate roofing sheets and galvanized steel sections for purlins and gutters
- High-end residential building with tinplate sheet tiles for aesthetic cladding and color-coated steel for wall panels
- Prefabricated building envelope package combining coated coil, tinplate sheets and square steel sections in one delivery
- Roofing system requiring custom surface finishes including mirror, color printing and matte for visual and functional differentiation
How An Order Runs
- Submit the bill of materials with required standards, material grades, coating types, thickness, width, coil ID, hardness and surface treatment
- Jialu confirms availability and pricing per item, flagging any tight sizes or custom requests
- Purchase order issued covering all envelope components as a single contract with mixed material types
- Production and coating applied in-house with chemical and mechanical testing in the CNAS-certified laboratory
- Third-party inspection arranged before shipment if requested, with testing schedule aligned to delivery timeline
- Coils and sections bundled and marked per destination and inspection requirement, ready for container or breakbulk shipment
Delivery And Documentation
- Appointed ocean, rail, air and land freight forwarders handle mixed material shipments to the destination port
- Mill certificates issued per standard and grade, including coating weight, hardness and surface treatment details
- Packing and marking arranged to match destination customs and site acceptance procedures
- If material does not meet the order within one month of receipt, return and refund can be negotiated
Questions From Roofing and Building Envelope Packages Buyers
Can I get coated coil, tinplate and galvanized sections on one order?
Yes. All envelope materials including color coated, galvalume, galvanized, corrugated tinplate and steel sections can be combined into a single purchase order.
What standards do you follow for coated and tinplate materials?
We supply to ASTM-A653, JIS G3302, EN10147 for coated coils, and GB/T 2520-2000, JIS G3303-2002, DIN EN 10203-1991 for tinplate sheets.
Do you support custom coating weights and surface finishes?
Yes. Coating weights (e.g. AZ150G/m², G40–G90, 30–600 g/m²) and surface treatments (chromed, skinpass, oiled, mirror, color printing) are customizable.
What hardness grades are available for steel sections?
We offer soft hard (HRB60), medium hard (HRB60–85), and full hard (HRB85+) for galvalume and galvanized coils.
Can you supply both coated coil and tinplate sheets in the same shipment?
Yes. Mixed material shipments are standard. All items are bundled and marked to suit the delivery and inspection requirements.
What documentation comes with the shipment?
Mill certificates per standard and grade, plus lab test results from the in-house CNAS-certified quality control laboratory.
What payment terms do you accept?
L/C, T/T, PayPal and credit card, in USD, CAD, AUD, SGD, EUR or RMB.
Send The Bill Of Material
Grades, sizes and quantities across every material family in the package. One quote, one order, one shipment.