Description
Verified GSM Per Roll — pre-shipment inspection confirms every roll ships at the quoted 550gsm before container loading, eliminating weight discrepancies at your warehouse.
Technical Specifications
| Parameter | Value |
|---|---|
| Product Type | PVC Coated Tarpaulin Roll |
| Weight | 550gsm |
| Total Thickness | 0.45mm |
| Base Fabric Denier Options | 200D×300D / 500D×500D / 840D×840D / 1000D×1000D |
| Coating Material | PVC |
| Color | Black (Blue, Yellow, Green, White available) |
| Surface Finish | Glossy or Matte |
| Temperature Range | -15°C to 70°C |
| UV Treatment | Customized — confirm the test basis required for your market |
| Flame Retardant | FR treated — confirm the grade required for your market |
| Anti-Fungal | Treated — confirm the standard required for your market |
| Waterproof | Yes |
| Custom Sizing | Available in widths and lengths to order |
| OEM / ODM | Accepted |
Application Suitability
| Application | Exposure & Requirement |
|---|---|
| Fish farming pond liners | Permanent water contact, soil chemistry, UV exposure, puncture risk from substrate |
| Aquaculture tank covers | Constant moisture, temperature fluctuation, cleaning chemical resistance |
| Agricultural water containment | Seasonal UV load, mechanical stress from water weight, edge abrasion |
| Tarpaulin distributor roll stock | Batch consistency across rolls, container-load volume planning, downstream converting |
Why Quoted GSM Rarely Matches What Arrives on the Dock
Roll weight is controlled at the coating head, not at the quotation desk.
Most PVC coated tarpaulin roll buyers have opened a container to find material that feels lighter than what was specified. The 550gsm PVC Coated Tarpaulin Roll wholesale market is full of quotations that state one weight while the delivered rolls fall short — sometimes by a significant margin. This gap is not always intentional; coating weight can drift during production if the line is not calibrated per batch. For distributors stocking pond liner grades, a lighter roll means your downstream converters receive material that fails mid-season, and the complaint lands on your desk. [NEED_CITE:]
Roll-to-Roll Consistency as a Stocking Requirement
When you buy PVC Coated Tarpaulin Roll wholesale for pond and aquaculture applications, your customers expect the same thickness and hand-feel from one roll to the next. Batch variation in coating weight creates visible differences once two rolls are unrolled and welded side by side in the field. Our production process holds the coating weight within a controlled tolerance across every roll in a single order, so your warehouse inventory performs uniformly regardless of which roll your converter pulls first.
Colour Uniformity Across Container-Load Volumes
Black PVC tarpaulin rolls can shift in tone between production runs if pigment batching is not managed tightly. For distributors fulfilling multiple orders from one shipment, a colour mismatch between rolls becomes a problem the moment a fabricator joins two panels on a large pond liner. Pigment is metered at the compounding stage and matched against a reference standard before the run begins. [NEED_CITE:]
Reading the Specification Sheet Beyond the GSM Number
The 550gsm weight is the combined mass of base fabric and PVC coating together. Two rolls can share the same GSM yet perform very differently if one uses a heavier base fabric with a thinner coat and the other reverses that ratio. A heavier base fabric denier — such as 840D×840D or 1000D×1000D — provides higher tensile and tear strength, which matters when a pond liner must resist puncture from rocky substrates. A thicker coating layer contributes more to waterproof integrity and chemical resistance. The 0.45mm total thickness at this grade positions it as a mid-heavy option balancing flexibility during installation with durability under continuous water exposure. Selecting the correct denier from the available options — 200D×300D through 1000D×1000D — depends on whether your end user prioritises easy handling or maximum puncture resistance.
What Happens When Roll Stock Is Chosen on Price Alone
A lighter roll may pass the initial warehouse check but reveal its shortcomings during fabrication. Welded seams on underweight PVC tarpaulin tend to fail before the fabric body does, particularly at the points where a pond liner flexes under water load. Converters who heat-weld seams on roll stock with inconsistent coating thickness also struggle to maintain a stable weld temperature — the seam either burns through or does not bond fully. For distributors, these fabrication complaints erode trust with your aquaculture customers faster than any other defect. [NEED_CITE:]
Why Converters and Distributors Source Roll Stock Here
Three full production lines with 36 sets of professional equipment support container-load volumes without the schedule compression that causes quality drift. The 10-person R&D team handles custom width and colour development, producing samples within days so you can verify appearance and hand-feel before committing to a bulk order. Dedicated QA and QC inspection runs at every production stage, with 100% inspection before shipment — not a sampling plan that lets marginal rolls through. Nearly 30 years of coated fabric production means the coating weight control on this 550gsm grade is built on established process parameters, not trial runs. ISO and CE certification underpins the documentation package that travels with your shipment.
Documentation & Verification
- Material specification sheet stating 550gsm weight, base fabric denier, and PVC coating weight per roll
- Pre-shipment inspection record with actual GSM measurement verified roll by roll
- Test report for UV or flame retardant grades where specified at order stage
- Roll packing list with net weight and roll count for container load planning
- Certificate of origin and customs documentation included with every export shipment
Fabrication, Handling & Storage
- Heat-weld at temperatures matched to the 0.45mm thickness — test a scrap piece from the 550gsm roll before full production runs
- Store rolls upright on pallets to prevent flat-spotting on the PVC coating surface
- Unroll in temperatures above -15°C to avoid creasing the black PVC coating at low flexibility
- Clean glossy finish surfaces with mild detergent; avoid solvents that soften the PVC coat
- Plan cutting layout to maximise yield from the available roll width and reduce welded seam count
What to Include in Your Roll Stock Inquiry
Provide your target roll width, the denier option best suited to your end use, and the annual volume you plan to draw down. Specify whether glossy or matte finish is required and whether your market demands a particular flame retardant or UV test basis. Let us know if you need samples dispatched before bulk production so your fabrication team can validate weld settings and colour match.
Frequently Asked Questions
Q: How is the 550gsm weight verified before shipment, and what documentation is provided?
A: Every roll is weighed and measured during the pre-shipment inspection. The actual GSM is recorded per roll and compared against the specification. A pre-shipment inspection record accompanies the shipment, along with a roll packing list showing net weight and roll count. You receive documentation confirming the 550gsm specification was met before the container was sealed.
Q: What roll widths and lengths are available for bulk container loading?
A: Custom widths and lengths are available to suit your container loading plan and downstream converting equipment. Provide your preferred roll dimensions at inquiry stage so we can calculate roll count per container and confirm lead time. Samples in your requested width can be produced for fabrication trials before the bulk order runs.
Q: How do you ensure colour consistency across multiple rolls in a single order?
A: Pigment is compounded against a reference standard before the production run begins. All rolls in one order are produced from the same batch of compounded PVC, which controls colour drift. A pre-shipment inspection checks visual consistency roll to roll, so panels cut from different rolls match when installed side by side on a pond liner.
Q: What base fabric denier is recommended for fish pond liner versus general cover use?
A: Higher deniers such as 840D×840D or 1000D×1000D offer greater puncture resistance, which suits pond liners laid over uneven or rocky substrates. Lower deniers like 200D×300D are lighter and more flexible, fitting general cover applications where ease of handling matters more than substrate abrasion. Confirm your end-use conditions so the correct denier is selected.
Q: What is the MOQ for custom width or colour on roll stock orders?
A: Minimums are set based on the custom width and colour requested, balanced against practical production run lengths. Container-load orders typically absorb custom specifications readily. Provide your required width, colour, and estimated volume at inquiry stage, and the minimum will be confirmed alongside lead time and sample availability.
