What is the single most important check before ordering?

Thickness, confirmed in writing and verified on samples and delivery. The order should state 2.5mm standard or 3.0mm explicitly, and the factory should batch-inspect thickness in production. An under-thickness sheet undermines the load and lifespan data the whole purchase is based on, and it is the hardest defect to remedy after shipment.

Which documents should I request for my market?

Tell the factory your market and project requirements at enquiry stage and ask what can be provided for your order. Our stated position is that CE and SGS third-party testing available on request. Also confirm any local roof fire requirement documentation early, remembering that our V-0 rating is a material-level grade, not a building-code certification.

What commercial terms must be fixed before paying a deposit?

Specification and colour, accessory list, container loading figure, price basis and validity period, payment terms, and a lead time split into production days, sea freight and customs clearance. Under our agency program those figures are published; for other markets they are all confirmed in the written quotation before any deposit is due.

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What importers should check before ordering ASA roof tiles

1. Overview

Most problems with imported roofing are decided before the order is placed, not after the container arrives. The checks in this guide take an importer one focused hour and prevent the five classic disappointments: thinner sheet than ordered, colour mismatch on the second container, missing ridge accessories, documents that do not match the market requirement, and a fire claim that collapses under an inspector question. Work through the list in order - specification, product verification, commercial terms - and put every answer in writing inside the quotation or contract.

2. Standard and Specification

Check one: write the full specification into the order. ASA co-extruded surface over anti-corrosion PVC base; thickness 2.5mm or 3.0mm, stated explicitly; total width 1050mm; effective width 960mm; wave pitch 160mm; wave height 30mm; step pitch 219mm; length cut to order in multiples of the step pitch; colour named from the six standard colours or an agreed colour card for large orders. Check two: build the accessory list from roof layouts - main ridge, tilted ridge, 150mm ridge ends, two-way and three-way junctions - so the shipment can actually finish roofs on arrival.

3. Structure and Construction

Check three: verify the structure is genuine co-extrusion, with the ASA layer extruded together with the base - request line evidence and inspect a cut sample edge. Check four: confirm the installation system your market will use matches the product data: purlins at 660mm spacing in square tube, C-channel or anti-corrosion wood; one-wave side laps; pre-drilled holes 2mm oversize; 6.3mm self-tapping screws; first main ridge section cut and ridge joints sawn flush. If your contractors work differently, resolve the difference before production, not on the roof.

4. Performance and Test Data

Check five: collect the test dataset with its conditions - 150kg load at 660mm span without cracking, 1kg steel ball from 3m without cracking, 24-hour immersion in salt, alkali or acid below 60 percent without reaction, thermal conductivity 0.325 W/m.K, 30-year design life and 20 years without fading in normal outdoor use. Check six, and read it twice: the fire line must say flame-retardant material, V-0 grade, a material-level rating. Roof fire requirements vary by country and building type, so confirm your local requirement and any documentation your market needs before ordering; with us, CE and SGS third-party testing available on request.

5. Buyer FAQ

What commercial terms should be written down? Payment method, lead time split into production, freight and clearance, quotation validity, and the loading figure - about 2,800 sqm per 20GP and 4,000 sqm per 40HQ as benchmarks. How do I protect colour on reorders? Order from a factory with strict batch colour control and per-batch colour inspection. Where do prices apply? Published tiers are Pakistan DDP only; elsewhere, contact us for regional landed pricing - see the wholesale price guide.

6. Factory Capability

Check seven: confirm the factory behind the paperwork. For Hengyang Stan Trading Development Co., Ltd the answers are: own product, based in Hengyang, Hunan, at its own production base of 20,000 sqm, 13 fully automatic co-extrusion lines, 15 million sqm annual capacity, computer-controlled temperature, automatic batching, online thickness measurement, and inspection of every batch for thickness, colour and strength, with green production and offcut recycling. Then run the cooperation process itself as the final check: enquiry answered with quotation and lead time within 24 hours, sample and confirmation, then production and shipping. A supplier that handles the checklist promptly usually handles the order the same way.

7. Conclusion

The checklist in one line: fix the specification, verify co-extrusion and thickness control, collect test data with conditions, word the fire rating at material level, confirm documents, loading, payment and lead time - all in writing, all before deposit. Importers who do this once rarely have a roofing dispute afterwards. Use this guide alongside the manufacturer selection guide, then send your completed requirements via trade and contact and we will answer every line of it in the quotation.

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