Description
Roll-Verified Weight — Every 550gsm PVC coated tarpaulin roll ships with a documented inspection record confirming coating weight before dispatch.
Technical Specifications
| Parameter | Value |
|---|---|
| Product Type | PVC Coated Tarpaulin Roll |
| Weight | 550gsm |
| Total Thickness | 0.45mm |
| Base Fabric Denier | 200D×300D / 500D×500D / 840D×840D / 1000D×1000D |
| Surface Finish | Glossy or Matte |
| Coating Material | PVC |
| Temperature Range | -15°C to 70°C |
| UV Treatment | Available in UV-treated grades — confirm the treatment level required for your climate |
| Flame Retardant | Available in flame retardant grades — confirm the grade required for your market |
| Anti-Fungal | Available as treatment option |
| Waterproof | Fully waterproof coated construction |
| Color | Black (Blue, Yellow, Green, White available) |
| Certifications | ISO, CE |
Application Suitability
| Application | Exposure & Requirement |
|---|---|
| Fish farming pond liners | Permanent water contact, soil chemistry exposure, puncture risk from substrate |
| Aquaculture reservoir covers | Extended water containment, UV exposure, wind uplift stress on anchored edges |
| Agricultural irrigation ponds | Seasonal water levels, sediment abrasion, freeze-thaw cycling |
| Tarpaulin distributor stock | Batch-to-batch consistency for regional resale to fabricators and contractors |
| Agricultural stock covers | Moisture ingress, mechanical handling, outdoor weathering |
Why Quoted GSM Often Fails the Pond Liner Test
PVC Coated Tarpaulin Roll wholesale 550gsm — the number on the quotation should match what you receive on the dock.
Coating weight and adhesion control at every production stage keep the roll you unbox aligned with the specification you ordered.
Tarpaulin buyers who import container loads of pond liner fabric frequently report rolls arriving lighter than the agreed weight. The shortfall is not always obvious until the fabric is cut and heat-welded, at which point thinner coating yields weaker seams and reduced puncture resistance at the pond floor. [NEED_CITE: tensile and tear test methods for coated fabrics per ISO 1421] When the base fabric denier is also lighter than quoted, the liner cannot withstand the hydrostatic pressure of a filled reservoir, leading to early failure at the seams and at contact points with sharp substrate.
Consistent Roll Weight Across Container-Load Shipments
Purchasing PVC Coated Tarpaulin Roll wholesale 550gsm in bulk means every roll in a container must hit the same coating target. Our 3 full production lines and 36 sets of professional equipment maintain coating weight through dedicated QA/QC at each stage. The 0.45mm total thickness and 550gsm coating weight are verified roll by roll, not sampled from a single piece at the start of a run.
Denier Options Matched to Pond Depth and Fabrication Method
The available base fabric options — 200D×300D through 1000D×1000D — let fabricators match tensile requirements to specific pond constructions. Deeper reservoirs and larger surface areas demand higher denier base fabric to resist hydrostatic load and wind uplift. Choosing the correct denier at the inquiry stage prevents over-engineering on small ponds and under-specifying on large aquaculture installations. [NEED_CITE: coated fabric tensile and tear performance relative to base fabric denier and weave density]
Understanding How 550gsm, Thickness, and Base Denier Interact
Coating weight alone does not determine how a pond liner performs under load. The 550gsm value represents total weight per square metre, combining PVC coating and the woven polyester base fabric. A 550gsm roll built on 1000D×1000D denier carries a thicker yarn structure with slightly less coating mass, yielding higher tear resistance but a stiffer hand that can complicate field welding. Conversely, the same 550gsm on 200D×300D places more coating weight relative to a lighter base, producing a more flexible sheet suited to complex pond geometries. The 0.45mm total thickness sits in the mid-range for aquaculture liners — thick enough to resist puncture from typical pond substrates while remaining pliable enough for fabricators to heat-seam without excessive energy input. Temperature performance from -15°C to 70°C covers the operating range for most outdoor water containment installations across temperate and subtropical climates. Glossy finish aids water runoff and simplifies cleaning, while matte finish provides better grip during fabrication and reduces glare on large open reservoirs.
What Happens When Batch Colour Shifts Across Rolls
A distributor stocking black pond liner for regional aquaculture operators cannot deliver rolls that vary in shade once installed side by side in adjacent ponds. Colour inconsistency across rolls in a single order signals incomplete pigment dispersion during the coating process or mixing variations between production batches. For fabricators cutting custom pond shapes, a visible colour boundary where two rolls meet undermines the professional finish the end user expects and can trigger rejection at installation. [NEED_CITE: pigment dispersion standards for PVC coated textile batch consistency]
Why Fabricators Source Roll Stock Through This Line
Three full production lines with 36 sets of professional equipment support bulk roll output with reliable on-time dispatch for container-load orders. A 10-person R&D team handles denier selection, custom width development, and sample production for pond liner fabricators evaluating material before committing to volume. Dedicated QA/QC at every production stage with 100% inspection before shipment means the 550gsm weight and 0.45mm thickness are confirmed on every roll, not assumed from a line setting. Samples are developed within days for custom width or finish requirements, letting fabricators validate heat-seam behaviour before ordering a full container. Nearly 30 years of process control over coating weight and adhesion underpin the consistency that distributors need when supplying regional aquaculture markets.
Documentation & Verification
- Material specification sheet stating 550gsm, 0.45mm thickness, and base fabric denier for the ordered roll
- Pre-shipment inspection record with roll-by-roll weight verification before dispatch
- Roll packing list detailing roll count, net weight, and container loading configuration
- Test documentation for UV-treated and flame retardant grades where specified on the order
- ISO and CE certificates included with shipment documentation package
- Certificate of origin and customs support for international pond liner roll shipments
Fabrication, Handling & Storage
- Heat-weld the 550gsm PVC coating at temperatures matched to glossy or matte surface finish for consistent seam strength
- Use 840D×840D or 1000D×1000D denier rolls for deep pond liners where hydrostatic pressure demands higher tear resistance
- Store 0.45mm rolls upright on pallets to prevent flat-spot deformation that compromises fabrication accuracy
- Allow cold-shipped rolls to acclimatise before unrolling to avoid cracking the PVC coating below -15°C
- Cut and seam 550gsm material on clean flat surfaces to prevent substrate particles from embedding in heat-weld zones
Request a Specification Match for Your Application
Provide your pond depth, surface area, and local climate conditions so we can recommend the correct base fabric denier and surface finish for your liner fabrication. Specify whether you need glossy or matte finish and whether UV or flame retardant treatment is required by your market. Confirm your target roll width, annual volume, and whether you need sample rolls for welding trials before placing a container order.
Frequently Asked Questions
Q: How is the 550gsm weight verified before shipment and how can I recheck on arrival?
A: Every roll undergoes 100% pre-shipment inspection with documented weight verification. On arrival, you can recheck by cutting a measured sample from the roll end and weighing it on a calibrated scale. The pre-shipment inspection record shipped with your container provides the baseline weight for each individual roll.
Q: What roll width and length options are available, and what is the lead time for non-stock sizes?
A: Standard stock widths and lengths are available for immediate dispatch. Custom widths and colours require sample approval first, with typical multi-week lead times depending on order volume and specification complexity. Contact us with your required dimensions to confirm availability and scheduling.
Q: How do you ensure colour consistency across multiple rolls in a single container?
A: Pigment batching is controlled at the mixing stage before coating begins. Rolls for a single order are produced within the same coating run where possible. Pre-shipment inspection includes visual colour comparison across rolls in the order to catch any shade variation before loading.
Q: What are the roll packing and container loading options for bulk orders?
A: Rolls are packed in carton or bale wrapping depending on your preference and destination handling requirements. The roll packing list details roll count, net weight, and container loading plan for 20ft and 40ft containers, supporting your customs clearance and warehouse receiving.
Q: What guidance is available for hot-air welding this PVC coated fabric for pond liner fabrication?
A: Welding parameters depend on the surface finish selected — glossy and matte respond differently to heat input. We recommend ordering sample rolls to establish your welder temperature and speed settings before committing to production volume. Our R&D team can advise on seam overlap and weld bead technique for the 0.45mm thickness.
