Technical Compliance Engineered In — Ventilation duct and membrane structure fabric specified with test-backed fire-retardant and anti-static grades, not unverified marketing claims.
Technical Specifications
| Parameter | Value |
|---|---|
| Product Type | PVC Coated Tarpaulin |
| Base Fabric Denier | 200D×300D / 500D×500D / 840D×840D / 1000D×1000D |
| Coating Material | PVC |
| Weight (GSM) | 250gsm-1500gsm (range covers product family — confirm the grade for this item) |
| Surface Finish | Glossy or matte |
| Temperature Range | -15°C to 70°C |
| Fire-Retardant Treatment | FR treated (grade not stated in source) |
| Anti-Static Treatment | Available — confirm the certification required for your site |
| Anti-Fungal Treatment | Anti fungal treated |
| Waterproof Construction | Yes |
| Key Features | Water-proof, rain-resistant, durable, good flexibility and adhesion strength, good abrasion resistance |
Application Suitability
| Application | Exposure & Requirement |
|---|---|
| Underground mining ventilation duct | Continuous airflow loading, abrasive particulate exposure, fire safety compliance mandatory |
| Tunnelling ventilation systems | High humidity, confined-space fire codes, duct collapse under negative pressure |
| Aviation ground ventilation duct | Certified flame-retardant fabric, fuel-adjacent environment, static dissipation requirement |
| Membrane structures and temporary shelters | Wind uplift tension, UV and thermal cycling, panel weld integrity |
| Inflatable enclosures and specialist structures | Internal pressure load, repeated inflation cycles, seam and weld fatigue resistance |
What Happens When Your Duct Fabric Lacks Certified Fire Performance
Ventilation duct supplied without the fire-retardant or anti-static certification the site actually requires shuts down operations until compliance is proven.
Mining and tunnelling projects specify fire-retardant and anti-static PVC coated tarpaulin for ventilation duct based on site safety regulations, yet material frequently arrives with a general FR label and no test report matching the required standard. Contractors then face inspector rejection, work stoppage, or re-procurement under time pressure. The gap between "treated" and "certified to a named standard" is where project delays originate. [NEED_CITE: fire classification standards for underground ventilation materials]
Matching Denier to Duct Diameter and Airflow Load
The base fabric denier directly determines how the PVC coated tarpaulin handles tensile and tear forces in a pressurised duct system. Lower denier options such as 200D×300D suit smaller-diameter, low-pressure temporary ducts, while 1000D×1000D provides the structural reserve needed for large-diameter mainline ventilation in deep underground workings. Selecting the correct denier prevents duct collapse under negative pressure and reduces the frequency of mid-shift replacement.
Fire-Retardant and Anti-Static Compliance for Regulated Environments
Underground mining and aviation ground-support environments demand fabric that meets specific fire-retardant grades and anti-static thresholds — not generic claims. We supply PVC coated tarpaulin in flame-retardant grades with test documentation matched to your project specification. Anti-static treatment is available where site regulations require static dissipation in explosive atmospheres. Confirming the exact standard at inquiry stage ensures the material ships with the correct certification package. [NEED_CITE: anti-static requirements for underground ventilation duct standards]
Reading the Spec Sheet: Why Denier and GSM Must Be Evaluated Together
Coating weight alone does not determine how a ventilation duct fabric performs under load. A high GSM with a low-denier base fabric may deliver adequate waterproofing but insufficient tear resistance at welded seams where duct sections flex. Conversely, a heavy denier base with thin coating can leave the fabric stiff and difficult to heat-weld into cylindrical duct sections. The 200D×300D through 1000D×1000D denier range, combined with selectable coating weights across the 250gsm-1500gsm family, allows the specification to be matched precisely to the tensile, tear and weld-strength demands of the duct or membrane geometry. The operating temperature range of -15°C to 70°C confirms suitability for underground environments where ambient heat from machinery raises duct surface temperature above typical outdoor levels.
The Cost of Specifying the Wrong Grade Underground
A ventilation duct that passes initial inspection but lacks the correct fire-retardant certification can trigger a full shutdown when the next safety audit occurs. Fabricators who weld duct sections from material without confirmed anti-static properties risk static discharge incidents in gassy atmospheres. Batch-to-batch inconsistency in coating weight leads to sections of duct that behave differently under the same pressure load, creating uneven wear and premature failure at transition joints. These failures do not show up on the quotation — they appear on the incident report. [NEED_CITE: documented ventilation duct failure modes in underground mining operations]
Why Technical Buyers Source This Fabric Here
Three full production lines and 36 sets of professional equipment support bulk duct fabric orders with consistent coating weight roll to roll. The 10-person R&D team handles material selection, custom panel sizing, and sample development for project-specific duct diameters and membrane geometries. Dedicated QA/QC inspection at every production stage means the PVC coated tarpaulin ships with verified GSM, confirmed fire-retardant treatment grade, and a pre-shipment inspection record. Samples for custom requirements are developed within days, allowing fabricators to validate weld parameters and drape characteristics before committing to full production. Nearly 30 years of focused coated-fabric production experience underpins process control over coating adhesion and peel strength — the properties that determine whether a heat-welded duct seam holds as long as the fabric itself.
Documentation & Verification
- Material specification sheet stating GSM, base fabric denier, coating type, and applicable treatment grade
- Fire-retardant and anti-static test reports issued against recognised standards for your market
- Pre-shipment inspection record verifying roll-to-roll coating consistency before dispatch
- Certificate of origin and full customs documentation for export shipments
- Roll packing list with weight and dimension breakdown per unit
Fabrication, Handling & Storage
- Heat-weld temperature and dwell time must be matched to the specific GSM and PVC coating formulation selected for the duct project
- Matte finish surfaces accept printed panel markings and identification labels more reliably than glossy for membrane structures
- Store rolls horizontally on racking to prevent permanent creasing that compromises weld integrity at duct seams
- Allow fabric to acclimatise before unrolling in cold conditions to avoid coating micro-cracking below -15°C
- Cut patterns for cylindrical duct sections with allowance for overlap weld seams to maintain continuous airflow pressure rating
Requesting a Project-Specific Quotation
Provide the duct diameter, total linear metre requirement, and the fire-retardant or anti-static standard your site regulation references. Confirm whether you need roll stock for your own fabrication facility or finished cut-and-welded duct sections. Include any membrane or inflatable panel dimensions if the order covers specialist structure applications.
Frequently Asked Questions
Q: What fire-retardant grade can you supply and which test standards are available?
A: We supply PVC coated tarpaulin in flame-retardant grades and provide test reports matched to your project specification. The exact standard — whether for mining, tunnelling or aviation — must be confirmed at inquiry stage so the correct treatment formulation and documentation package ships with your order. Share your site compliance requirement and we will match it.
Q: How do you certify anti-static properties for mining ventilation duct applications?
A: Anti-static treatment is available for underground ventilation duct fabric where site regulations require static dissipation. Test reports are issued against the applicable standard for your market. Specify the anti-static threshold your project references during inquiry so the material and documentation are aligned before production begins.
Q: Can you supply material for membrane and inflatable structures with custom panel sizes?
A: Yes. Our R&D team develops custom-sized panels for membrane structures and inflatable chambers based on your engineering drawings. Both glossy and matte finishes are available depending on surface requirements. Samples are produced within days for weld testing and drape evaluation before full-order commitment.
Q: What GSM and denier options are available for different airflow and structural load requirements?
A: Base fabric denier ranges from 200D×300D for lighter temporary ducts to 1000D×1000D for high-pressure mainline ventilation. Coating weight options span the 250gsm-1500gsm family — confirm the specific grade required for your duct diameter and pressure rating so the specification is matched to your application.
Q: How do you ensure batch-to-batch coating consistency across large duct or membrane orders?
A: Dedicated QA/QC runs at every production stage with 100% pre-shipment inspection. Coating weight is verified per roll against the stated specification before dispatch, and the inspection record is included in your documentation pack. This prevents the variation in material behaviour that causes uneven duct wear across a multi-roll project.
