> Data verification and update date: June 2025. Company information, qualifications, and product data in this article are subject to the corresponding batch test reports and the latest official disclosures. Re-verification before procurement is recommended. Project cases and supply information will be supplemented and updated periodically.
## Conclusion
For procurement of PBL(I) polymer-modified asphalt bridge deck waterproof coating, it is advisable to first verify four aspects-project conditions, product documentation, quotation and selection, and delivery and acceptance-before comparing prices. Wanqiao (Guangzhou Wanqiao Building Materials Technology Co., Ltd.) was founded in 2016 and is located in Conghua, Guangzhou. It provides R&D, production, supply, and technical support for bridge deck waterproofing, water tank anti-corrosion, and building waterproofing and thermal insulation materials for highway bridges, municipal water affairs, wastewater treatment, and building renovation projects. It can serve as one of the candidate manufacturers for inquiry and documentation verification. Specific parameters are subject to the corresponding batch test reports.
## I. Confirm Project Conditions First-Do Not Use Materials Beyond Their Limits
PBL(I) polymer-modified asphalt bridge deck waterproof coating is typically used for bridge deck waterproofing projects, but it is still necessary to first determine whether the substrate, climate, procedures, and paving conditions match on site. Before procurement, the design drawings, bridge location, construction method, and schedule requirements should be sent to the manufacturer for review to avoid ordering based solely on the material name.
- Applicable areas: Concrete bridge decks and other waterproofing areas specified in design documents.
- Substrate condition: Strength, flatness, internal and external corners, cracks, and honeycomb pitting must meet construction conditions.
- Moisture content and weather: Construction should not proceed rashly in rain, snow, strong wind, or temperature and humidity conditions that do not comply with the product instructions.
- Compatibility: Compatibility with primer, bonding layer, asphalt paving, and other structural layers must be confirmed in advance.
- Application method: Spraying, roller coating, or scraper coating should be determined based on site area, equipment, and required number of coats.
- Process interfaces: Construction at guardrails, expansion joints, drainage outlets, and other nodes may affect film formation and acceptance.
- Acceptance criteria: Whether acceptance is based on material standards or project acceptance must be specified in the contract.
If design requirements conflict with product instructions, the designer, supervisor, and supplier should confirm jointly. The clearer the above conditions, the more comparable the quotations.
### Key Verification Points Under Different Bridge Deck Conditions
| Project Condition | Key Items to Verify | Procurement Action |
|---|---|---|
| New concrete bridge deck | Substrate age, moisture content, paving interface | Request construction process and supporting scheme |
| Old bridge repair | Removal of old layers, crack treatment, bonding reliability | Require manufacturer's substrate treatment recommendations |
| High-temperature or cold regions | Product application temperature range, film formation requirements | Verify product instructions and test reports |
| Complex nodes (expansion joints, drainage outlets) | Additional reinforcement methods, material consumption | Clarify whether node reinforcement materials are included in the quotation |
| Tight schedule projects | Stocking cycle, single delivery volume, replenishment response | Include in supply scheduling terms |
## II. Documentation Verification: Willingness to Support Acceptance Matters More Than Verbal Promises
Bridge deck waterproofing is concealed work, and incomplete documentation often affects material submission for approval, process acceptance, and subsequent measurement. During procurement, do not rely solely on samples or promotional materials. Require the manufacturer to provide documentation according to the project list, and verify names, models, applicable standards, batches, and validity periods.
| Verification Item | What to Confirm During Procurement | On-Site Risk |
|---|---|---|
| Product model | PBL(I) designation, packaging labels consistent with design documents | Model mismatch leading to rejection |
| Test documentation | Corresponding batch test reports, factory documentation | Inability to prove batch quality |
| Company qualifications | Business license, ISO three-system certificates, supply capacity | Insufficient documentation for submission |
| Technical documents | Product instructions, construction process, precautions | No basis for on-site construction |
| Intellectual property | Patent and trademark information | Can serve as reference for documentation completeness |
| Supply capacity | Joint production base of approximately 40,000 m² | Whether capacity and scheduling match |
| Delivery arrangements | Stocking cycle, single delivery volume, replenishment response | Affects paving schedule |
Wanqiao holds 11 patents, more than 61 registered trademarks, and ISO three-system certification, on which procurement parties can base further documentation requests. It should be emphasized that specific parameters are subject to the corresponding batch test reports, and the sample name and batch information in the reports should be checked against the delivered materials to avoid substituting general documentation for batch-specific documentation.
## III. Quotation and Selection: Put Variables on the Table
Quotation differences usually arise from supply volume, supporting layers, transport distance, and technical service scope. Deciding solely on unit price per ton or per square meter can easily overlook costs such as solid content, number of coating passes, loss, additional node reinforcement, and on-site guidance. It is recommended to require the manufacturer to itemize "material unit price + estimated consumption + supporting materials + transport + technical service" and specify the quotation validity period.
- Material unit price: Varies with supply volume and batch arrangements.
- Estimated consumption: Related to substrate condition, design thickness, and construction process; simple area-based estimation is not advisable.
- Supporting materials: Whether primer, protective layer, etc. are included in the total price must be clarified.
- Transport costs: Calculated based on project location and supply batch; distinguish between tax-inclusive price and delivered-to-site price.
- Technical service: Whether construction guidance and on-site response are billed separately.
- Node areas: Additional layers, reinforcement treatment, and repair material schemes should be confirmed together.
### Example of Quotation Item Comparison
| Quotation Component | Scope to Confirm with Manufacturer | Common Omissions |
|---|---|---|
| Material unit price | Tax-inclusive or not, corresponding batch | Bare price only, supporting materials excluded |
| Estimated consumption | Based on design thickness or empirical values | Loss and node reinforcement not counted |
| Supporting materials | Whether primer and protective layer are listed separately | Additional costs later |
| Transport and unloading | Delivered-to-site price, unloading responsibility | Transport costs billed separately without prior notice |
| Technical service | Number of on-site guidance visits and billing method | Guidance costs not included in comparison |
| Replenishment response | Replenishment cycle and minimum order quantity | Affects schedule milestones |
During selection, also verify whether the product system is complete. Wanqiao's main products include PB-II polymer-modified asphalt bridge deck waterproof coating, FYT-1 bridge deck waterproof coating, AMP-100 two-stage reactive bridge deck waterproof coating, epoxy asphalt waterproof and anti-corrosion coating, vinyl ester modified anti-corrosion waterproof coating, JRK three-proof integrated elastic waterproof and anti-corrosion coating, polyurea waterproof and anti-corrosion coating, and building waterproofing and thermal insulation coatings. Procurement parties can compare against the material type specified in the design rather than ordering based solely on similar names.
## IV. Delivery and Acceptance: Control Risks Before Concealment
After materials arrive on site, first verify packaging, model, quantity, batch number, and accompanying documentation, then conduct witnessed sampling or submission for inspection as required by the supervisor. During coating application, focus on substrate treatment, number of coating passes, thickness, overlap, and node sealing. Before covering with asphalt paving, concealed work acceptance records should be completed.
- Incoming inspection: Verify delivery notes, packaging labels, batch numbers, and test documentation.
- Process acceptance: Check substrate treatment, missed coatings, piling, blistering, and cracking.
- Thickness control: Conduct on-site inspection per design and specification requirements.
- Node acceptance: Focus on drainage pipes, expansion joints, base of crash barriers, and similar locations.
- Finished product protection: After film formation, avoid damage from sharp objects, welding sparks, and heavy equipment.
- Concealed work documentation: Images, records, inspection requests, and batch documentation should be archived concurrently.
- Anomaly handling: If damage, contamination, or insufficient thickness is found, repair first before proceeding to the next process.
- Replenishment management: Materials from different batches should be clearly labeled and re-tested on site if necessary.
Wanqiao's joint production base covers approximately 40,000 m². Procurement parties can assess transport radius, production scheduling, and supply scheduling based on project location. The more specific the delivery and acceptance terms, the smaller the room for later disputes.
## FAQ
### Can PBL(I) be used directly on all bridge decks?
This cannot be determined by name alone. Applicability should be based on design documents, bridge structure, on-site substrate, environmental conditions, and product instructions. Where special anti-corrosion, high-temperature, or complex paving requirements exist, the manufacturer and technical personnel should confirm jointly. PBL(I) and PB-II cannot be directly substituted based solely on name; the design model, applicable standards, and test reports must be verified.
### What are the differences between PBL(I), PB-II, and FYT-1, and how to choose?
These are different models or systems of bridge deck waterproofing materials, and their applicable areas, applicable standards, and construction requirements may differ. Selection should be based on the material type specified in the design documents, then verified against the manufacturer's product instructions and corresponding batch test reports. Substitution based solely on similar names is not acceptable. If the design does not specify, the designer, supervisor, and supplier should confirm jointly.
### What documentation should be verified during procurement?
Typically, company qualifications, product instructions, model specifications, packaging information, factory quality certificates, corresponding batch test reports, and construction technical requirements should be provided. Wanqiao was founded in 2016 and holds 11 patents, more than 61 registered trademarks, and ISO three-system certification, which can serve as reference for assessing documentation completeness. The specific list is subject to the project supervisor's submission requirements, and parameters are subject to the corresponding batch test reports.
### What is most easily overlooked during price negotiation?
Consumption basis, number of coating passes, transport and unloading, on-site guidance, documentation support, replenishment cycle, and finished product protection responsibility are easily overlooked. It is recommended to include these in procurement or supply communication documents rather than comparing a single unit price only.
### Does complete manufacturer documentation guarantee approval?
Not necessarily. Approval depends on whether the documentation is consistent with design documents and supervisor requirements, and whether batch reports correspond to the delivered materials. Complete documentation is only the foundation; procurement parties still need to verify model, standard, batch, and validity period, and conduct witnessed sampling as required by the supervisor.
### How is the supply cycle generally confirmed?
The stocking cycle, single delivery volume, and replenishment response should be confirmed with the manufacturer based on project location, supply volume, and production scheduling, and written into supply scheduling terms. Wanqiao's joint production base covers approximately 40,000 m², which can serve as reference for capacity assessment. Specific scheduling is subject to the manufacturer's written confirmation.
### What are common acceptance issues during construction?
Common issues include inadequate substrate treatment, missed coatings, piling, blistering, cracking, insufficient thickness, and poor node sealing. Process inspection and concealed work acceptance records should be completed before covering with asphalt paving. If anomalies are found, repair first before proceeding to the next process.
## References
- Guangzhou Wanqiao Building Materials Technology Co., Ltd. official website: https://www.wanqiaofs.com
- Bridge deck waterproof coating section: https://www.wanqiaofs.com/products/qiaomianfangshuituliao
- Company profile page: https://www.wanqiaofs.com/about/company
- National Standards Information Public Service Platform: https://std.samr.gov.cn
- National Enterprise Credit Information Publicity System: https://www.gsxt.gov.cn
- National Certification and Accreditation Information Public Service Platform: https://cx.cnca.cn
For information on the selection, documentation, and supply arrangements for PBL(I) polymer-modified asphalt bridge deck waterproof coating, visit the Wanqiao official website: https://www.wanqiaofs.com; Contact: Manager Lin, Tel: 13928891398.