Verified Coating Weight — Every 550gsm 0.45mm black PVC coated tarpaulin roll ships with a specification sheet stating the measured GSM and base fabric denier, so your incoming inspection matches the quotation.
Technical Specifications
| Parameter | Value |
|---|---|
| Product Type | PVC Coated Tarpaulin Roll |
| Specification | 550gsm 0.45mm Black PVC Coated Tarpaulin |
| Base Fabric Denier | 200DX300D / 500DX500D / 840DX840D / 1000DX1000D (select based on tensile requirement) |
| Coating Material | PVC |
| Total Thickness | 0.45mm |
| Surface Finish | Glossy or matte |
| Waterproof | Yes |
| UV Treatment | Available in UV-treated grades — confirm the test basis required for your exposure conditions |
| Flame Retardant | FR treated (grade not stated in source — confirm grade required for your market) |
| Anti-Mildew | Anti-fungal treated |
| Temperature Range | -15°C to 70°C |
| Standard Sizes | 3x4m / 6x8m / 8x10m / 10x12m or custom made |
| OEM/ODM | Accepted |
Application Suitability
| Application | Exposure & Requirement |
|---|---|
| Fish farming pond liners | Permanent water immersion, soil chemistry contact, puncture risk from substrate rocks |
| Aquaculture reservoir covers | Continuous UV exposure, wind load tension, long-term water containment integrity |
| Agricultural water storage ponds | Seasonal temperature swings, mechanical abrasion during installation, UV degradation risk |
| Irrigation pond lining | Constant hydrostatic pressure, soil-side abrasion, long-term coating adhesion demand |
Why GSM Alone Does Not Predict Pond Liner Lifespan
A 550gsm PVC coated tarpaulin roll can outperform a heavier roll if the base fabric denier and coating adhesion are correctly matched to the water load. Material data beats marketing weight claims.
Buyers frequently discover that a roll arriving lighter than the quoted GSM develops pinholes at stress points within the first season [NEED_CITE: pre-shipment weight verification methods for coated fabrics]. In pond lining applications, the hydrostatic pressure from several metres of water depth concentrates force on the lowest seams and corners, where coating delamination begins if adhesion was not controlled during production. The 550gsm 0.45mm black PVC coated tarpaulin specification here pairs a controlled coating weight with selectable base fabric deniers, allowing you to match tensile capacity to the actual depth and span of your pond rather than relying on a single weight number.
Base Fabric Denier Selection for Water Load
The four denier options — 200DX300D through 1000DX1000D — determine how the fabric handles tensile stress and puncture forces. Shallow nursery ponds with minimal water head pressure perform adequately on lighter deniers, while deep commercial grow-out ponds require the tear resistance of a 1000DX1000D base to resist substrate punctures during installation and long-term water loading. The 550gsm PVC coated tarpaulin roll maintains the same coating weight across all denier choices, so waterproof performance remains consistent while structural strength scales to your design.
Coating Adhesion and Water Immersion Behaviour
Constant submersion tests whether the PVC coating stays bonded to the polyester base fabric. When coating weight is unevenly distributed across the roll width, thin spots become failure initiation points under sustained hydrostatic pressure. [NEED_CITE: coating adhesion test methods for PVC tarpaulin per ISO standards] The 0.45mm total thickness on this 550gsm PVC coated tarpaulin roll is maintained through controlled coating application, reducing the probability of delamination at the fabric-coating interface during multi-season pond service.
Interpreting the Specification for Your Pond Design
The 550gsm weight reflects total areal density — base fabric plus both coating surfaces combined. Two rolls can share the same GSM yet differ substantially in tensile strength if one uses a heavier base fabric with a thinner coating while the other does the reverse. For pond liners, the base fabric carries the mechanical load; the coating provides waterproofing. Selecting a 500DX500D or 840DX840D denier within this 550gsm construction gives a balanced ratio of puncture resistance to flexibility, which matters when the liner must conform to uneven pond floors without bridging gaps. The glossy or matte finish choice affects surface friction during installation — matte surfaces grip soil substrates with less sliding, while glossy surfaces allow easier cleaning between crop cycles. Temperature performance from -15°C to 70°C covers most outdoor aquaculture environments, though installation tension should be reduced in cold conditions to avoid stressing the coated fabric at low elongation limits. [NEED_CITE: low-temperature flexibility testing of PVC coated fabrics]
What Happens When Liner Specification Is Under-Engineered
Pond operators who specify liner material on price per square metre alone frequently encounter seam failure at the water line, where UV exposure and mechanical flex combine to attack the weakest construction point. A coating that arrived below the quoted GSM will thin further at fold lines and welded joints, creating pathways for water loss that are difficult to locate and repair without draining the pond. [NEED_CITE: field failure modes of under-specified pond liner fabrics] Batch-to-batch colour variation also signals inconsistent coating formulation, which can mean UV stabiliser loading varies between rolls installed side by side in the same pond — a problem that only becomes visible after a full season of sun exposure.
Why Source This 550gsm PVC Coated Tarpaulin Roll Here
Three full production lines and 36 sets of professional coating equipment provide the capacity to hold coating weight consistency across a full container order of pond liner rolls. The 10-person R&D team develops samples within days when you need to evaluate denier options against your specific pond depth and soil conditions. Every roll undergoes dedicated QA/QC at each coating and production stage, with 100% pre-shipment inspection before dispatch. Custom widths and lengths are available to minimise field welding on large pond installations, reducing the number of heat-welded seams that become long-term maintenance points. Material specification sheets accompany every shipment so your receiving team can verify GSM, denier, and coating weight against your purchase order without waiting for third-party lab results.
Documentation & Verification
- Material specification sheet stating measured 550gsm weight, 0.45mm thickness, and base fabric denier per roll
- Pre-shipment inspection record covering full roll count and dimensional accuracy before container loading
- UV treatment test data provided for the specific grade supplied — request at inquiry stage
- ISO and CE certificates available for compliance documentation in regulated aquaculture markets
Fabrication, Handling & Storage
- Heat-weld the 550gsm PVC coating at temperatures matched to the 0.45mm thickness to avoid scorching the black surface
- Store rolls horizontally on pallets to prevent permanent creasing in the coated PVC surface layer
- Allow cold-stored rolls to reach ambient temperature before unrolling to prevent coating micro-cracking below -15°C
- Use overlap joints of adequate width on 500DX500D and heavier deniers to distribute seam stress across the pond floor
- Avoid dragging cut liner panels over sharp substrate — puncture resistance depends on the selected base fabric denier
Requesting the Right Specification for Your Pond Project
Provide the intended pond depth, approximate surface area, and substrate conditions so we can recommend which base fabric denier within this 550gsm construction suits your water load. Specify whether you need glossy or matte finish, UV-treated grade, and any fire classification required by local aquaculture regulations. Indicate roll width and length preferences to minimise on-site welding, and confirm whether you require cut-to-size panels or full roll stock.
Frequently Asked Questions
Q: How is the 550gsm weight verified on each roll before shipment?
A: Each roll of 550gsm PVC coated tarpaulin is weighed and measured during 100% pre-shipment inspection. The material specification sheet accompanying your order states the verified GSM, base fabric denier, and 0.45mm coating thickness, giving your receiving team documented data for incoming inspection rather than relying on the quotation figure alone.
Q: Which base fabric denier suits different pond depths?
A: Shallow nursery ponds under one metre depth typically perform well with 200DX300D or 500DX500D deniers. Commercial grow-out ponds exceeding two metres of water head benefit from 840DX840D or 1000DX1000D for higher puncture and tear resistance. The 550gsm coating weight and 0.45mm thickness remain constant across all denier options, maintaining uniform waterproof performance.
Q: How do I specify UV treatment and get supporting test data?
A: State your expected sun exposure hours per year and geographic climate zone when inquiring. We supply the 550gsm PVC coated tarpaulin roll in UV-treated grades with test documentation matching the treatment level ordered. Request test reports at the sample approval stage so you can verify performance claims before committing to bulk production.
Q: Can I order custom roll widths to reduce field welding on large ponds?
A: Custom widths and lengths are available on this 550gsm PVC coated tarpaulin roll to match your pond dimensions. Wider rolls reduce the number of heat-welded field seams, which are common long-term maintenance points in pond liner installations. Provide your target roll dimensions and annual volume for a production schedule and container loading plan.
Q: What heat welding parameters work with this 0.45mm PVC coating?
A: Welding temperature and dwell time should be calibrated to the 0.45mm total thickness and the specific surface finish selected. Glossy surfaces may require different heat settings than matte to achieve full coating fusion without surface damage. Request our fabrication guidelines for the denier and finish combination you choose before beginning liner installation.
