Batch-Verified Coating Weight — every roll of 550gsm 0.45mm black PVC coated tarpaulin is weighed and inspected at each production stage to confirm GSM matches the material specification sheet before dispatch.
Technical Specifications
| Parameter | Value |
|---|---|
| Product Type | PVC Coated Tarpaulin Roll |
| Weight | 550gsm |
| Total Thickness | 0.45mm |
| Color | Black |
| Coating Material | PVC |
| Base Fabric Denier Options | 200D×300D / 500D×500D / 840D×840D / 1000D×1000D |
| Finish | Glossy or matte |
| Temperature Range | -15°C to 70°C |
| UV Treatment | Available with customized UV treatment — confirm grade required for your market |
| Flame Retardant | Available in FR treated grades — confirm the grade required for your site compliance |
| Anti-Fungal | Anti-fungal treated |
| Waterproof | Yes |
| Size Options | 3×4m / 6×8m / 8×10m / 10×12m or custom made |
| Key Features | Waterproof, anti-fungal treated, suitable for heat welding, flexible across stated temperature range |
Application Suitability
| Application | Exposure & Requirement |
|---|---|
| Fish farming pond liner | Permanent water immersion, soil chemistry contact, puncture risk from substrate |
| Aquaculture water containment | Constant hydrostatic pressure, UV exposure at water surface, welded seam integrity |
| Agricultural reservoir cover | Seasonal temperature cycling, wind uplift on large spans, long-term water contact |
| Outdoor waterproof cover | Rain and standing water, UV exposure, mechanical abrasion from wind-driven debris |
| Industrial water containment | Chemical splash exposure, heavy equipment proximity, high puncture and tear demand |
Why a Stated GSM Without Verification Leaves Your Pond Liner Project Exposed
The 550gsm PVC coated tarpaulin roll you specify must arrive at the weight you paid for, verified per roll — not averaged across a batch.
Pond liner installers have pulled rolls from a container only to find the material feels lighter than expected, and a field cut confirms the fabric is below the quoted GSM. When liner fabric arrives underweight, hydrostatic resistance drops, puncture vulnerability increases, and the welded seams may not hold under full water load. The rework cost of replacing a liner already deployed in a stocked pond far exceeds the material savings. [NEED_CITE:]
550gsm PVC coated tarpaulin fire retardant anti-static certified grades are available for projects that also demand fire compliance on site, though the specific test grade must be confirmed against your local regulation before production.
Coating Weight Control and What It Means for Liner Integrity
The 550gsm weight of this PVC coated tarpaulin roll represents total fabric mass per square metre, combining the base fabric and the PVC coating applied to both sides. Coating weight directly affects the material’s resistance to water penetration and its ability to hold a clean heat-welded seam. When coating is uneven across a roll, thin spots become failure points under sustained hydrostatic pressure. Consistent coating weight is maintained through in-process QA at every stage of the production line, not just a final check at packing.
Denier Selection for Pond and Reservoir Loads
Base fabric denier determines how the material resists tearing once punctured. For lined fish ponds on prepared substrates, a mid-range denier such as 500D×500D provides adequate puncture resistance while keeping the fabric flexible enough for installers to position and weld on site. For reservoir liners exposed to heavier mechanical stress or uneven ground, selecting 840D×840D or 1000D×1000D increases tear propagation resistance. The 550gsm PVC coated tarpaulin roll is produced across these denier options so the fabric matches the actual load case rather than being overspecified or underspecified for the project. [NEED_CITE:]
How Thickness, Temperature Range and Surface Finish Interact
The 0.45mm total thickness of this fabric positions it in the mid-weight range, offering a balance between handling flexibility and structural durability for liner applications. The stated temperature range of -15°C to 70°C covers most aquaculture and agricultural environments, though projects in extreme climates should confirm whether the low-temperature boundary affects welding behaviour during winter installation. A glossy finish sheds sediment and biofilm more readily during cleaning, while a matte finish reduces glare on large water surfaces. Selecting between glossy or matte finish depends on whether the liner will be visible in a commercial aquaculture facility or buried beneath water in a remote reservoir.
The Cost of Skipping Pre-Shipment Weight Verification
When a pond liner project receives rolls that have not been individually verified against the material specification sheet, the first sign of a problem often comes during welding. Underweight fabric takes heat differently, and the weld line may fail before the base fabric does. Installers then face a choice between replacing sections mid-project or accepting a liner with compromised seam strength. Batch-to-batch colour variation is a secondary risk when multiple rolls are laid side by side in a visible aquaculture installation. These failures are preventable with documented pre-shipment inspection on every roll. [NEED_CITE:]
What This Manufacturer Brings to Your Liner Supply Chain
Three full production lines and 36 sets of professional equipment support roll stock output that meets container-load volume without extended lead times on standard widths and colours. A dedicated 10-person R&D team develops sample rolls within days when you need to confirm denier, colour or GSM before committing to a full order. QA inspection runs at every production stage rather than only at final packing, catching coating weight drift before it reaches the roll. ISO and CE certified processes underpin the production system, and the factory’s location at No. 319 Jiqi Road, Huaiyin District, Jinan provides direct access to Shandong’s coated fabric supply chain.
Documentation & Verification
- Material specification sheet stating exact 550gsm weight, base fabric denier and coating type per roll
- UV and flame retardant test reports supplied for the specific grade produced, not a generic family claim
- Pre-shipment inspection record confirming GSM and colour match before container loading
- Roll packing list with batch reference for traceability across the full order
- ISO and CE certificates covering coated fabric production scope
- Certificate of origin and customs documentation for international liner shipments
Fabrication, Handling & Storage
- Heat weld at temperatures matched to the 550gsm PVC coating to ensure seam strength equals base fabric strength
- Store rolls flat or upright on cores to prevent creasing through the 0.45mm coating layer
- Allow rolls to acclimatise before unrolling in temperatures near the -15°C lower boundary
- Clean glossy finish surfaces with mild detergent to avoid coating degradation over repeated maintenance cycles
- Plan cut layouts to minimise offcuts, particularly when working with custom width rolls for large pond liners
- Reinforce stress points with additional PVC patches welded over the 550gsm fabric at anchor and drain penetrations
What to Include in Your Enquiry
Specify the denier grade, required roll width and total linear metres needed for your pond or reservoir project. Confirm whether your site requires flame retardant or anti-static certification and which standard applies in your market. Indicate whether you need rolls only or finished cut sizes with welded edges, and whether a sample roll is required for weight and colour approval before production.
Frequently Asked Questions
Q: How do I confirm the GSM I receive matches what was quoted?
A: Every roll undergoes individual weight verification during pre-shipment inspection. You receive a signed inspection record stating the measured GSM per roll, cross-referenced to your material specification sheet. If any roll falls outside the stated tolerance, it is held back before dispatch rather than shipped and discovered on site.
Q: Can I get a sample roll before committing to a full container?
A: Sample rolls are developed within days of your specification being confirmed. The sample carries the same base fabric denier, coating weight and finish as the production run, allowing you to verify GSM, colour and welding behaviour before authorising the full order.
Q: What denier grade is right for a lined pond versus a reservoir?
A: Lined fish ponds on prepared substrates typically suit 500D×500D for a balance of puncture resistance and installation flexibility. Reservoirs exposed to heavier mechanical loads or uneven ground benefit from 840D×840D or 1000D×1000D. The correct denier depends on your specific substrate conditions and hydrostatic head.
Q: How do you ensure colour consistency across multiple rolls in one order?
A: In-process quality control checks colour at every coating stage, not only at final packing. Rolls within a single order are produced in the same batch run where possible, and the pre-shipment inspection record documents colour matching across all rolls before container loading.
Q: What documentation ships with the rolls?
A: Each shipment includes a material specification sheet, pre-shipment inspection record, roll packing list with batch references, ISO and CE certificates, and certificate of origin. Where flame retardant or UV treatment is specified, the corresponding test report for that grade accompanies the documentation package.
