A steel tank interior lining system for demineralized water, oil storage and petrochemical tank environments. It forms a dense, continuous anti-corrosion barrier over prepared steel surfaces to support long-term immersion protection and detail-area durability.
Steel primer interface + main spray polyurea anti-corrosion lining
Creates the metal primer interface on prepared steel and supports adhesion between the steel substrate and the main polyurea lining.
Forms the main dense, thick-film spray polyurea lining for long-term tank interior anti-corrosion protection.
The system separates the steel primer interface from the main polyurea lining, helping reduce adhesion failure risk and long-term corrosion risk in steel tank interiors.
Creates a stable primer interface on properly prepared steel before the main lining is applied. In steel tank interiors, this layer helps improve bonding between the steel substrate and the protective lining, reducing the risk of coating detachment, cathodic disbonding and under-film corrosion during long-term service.
Forms a dense, continuous thick-film polyurea lining over the primed steel surface. This layer provides the main protective barrier against immersion exposure, stored demineralized water or oil exposure, and corrosion risks related to pinholes or lining discontinuity, helping protect tank walls, bottoms, weld seams and transition details.
Steel tank corrosion often starts from small weak points: contaminated steel, unsealed weld details, poor primer control or discontinuous lining areas. The BW8008 + BW3-9512 system helps reduce these risks through a controlled coating route from surface preparation to final lining inspection.
Cleaning, profiling and detail inspection help remove weak points before coating begins. This improves the foundation for the complete BW8008 + BW3-9512 system and helps reduce early problems such as weak bonding, pinholes, local corrosion around welds, and defects at nozzles, manholes or bottom-to-wall transitions.
BW8008 is applied to create a stable primer base on the prepared steel surface. With controlled coverage, film thickness and recoat timing, it helps the following BW3-9512 lining bond more reliably and reduces the risk of interface-related failure during tank service.
BW3-9512 forms the final spray polyurea lining over the BW8008-primed steel surface. Final DFT, lining continuity and detail-area coverage should be checked before service, helping the tank interior resist long-term immersion, stored-medium exposure and corrosion risks at critical areas.
System-relevant values for steel storage tank anti-corrosion: metal adhesion, cathodic disbonding, heavy-duty lining strength, impermeability and stored-medium resistance.
| Item | Test standard / reference | Result |
|---|---|---|
| Density g/cm³ | GB / T 6750-2007 | 1.08 |
| Cathodic disbonding | HG / T 3831-2006 | ≤15 mm |
| Dry metal adhesion | ASTM D-3359 | 11.5 MPa or substrate broken |
| Temperature variation | GB / T 9278-1988 | -40 to +180°C, 24 h: normal |
| Salt spray / oil resistance | Chemical Resistance | Salt spray 1000 h; 0# diesel and crude oil, 30 d |
| Acid / alkali / salt resistance | Chemical Resistance | 50% H2SO4 or 15% HCl, 50% NaOH, 60 g/L salt, 30 d |
| Item | Test standard / reference | Result |
|---|---|---|
| Wear resistance | HG/T 3831-2006 | 18 mg |
| Hardness | GB / T 23446-2009 | Shore D 72 |
| Tensile strength | GB / T 23446-2009 | 40 MPa |
| Gel time @ 25°C | Product Information | 25-35 s |
| Cathodic disbonding | HG / T 3831-2006 | ≤15 mm |
| Solid content | Product Information | 100% / 100% |
| Impermeability | GB / T 23446-2009 | 0.4 MPa / 2 h, impermeable |
| Steel / concrete adhesion | GB / T 23446-2009 | 12 MPa steel base / 3.3 MPa concrete base |
| Flexural / impact resistance | SY / T 0315-2013 | No cracking at -20°C; 6 J impact, no leakage point |
| Salt spray / oil resistance | Chemical Resistance | Salt spray 2000 h; 0# diesel and crude oil, 30 d |
| Acid / alkali / salt resistance | Chemical Resistance | 35% H2SO4 or 15% HCl, 35% NaOH, 60 g/L salt, 30 d |
The above values are selected from the current product-detail Product Information, Physical Properties and Chemical Resistance tables. Final film thickness and suitability should be confirmed according to substrate condition, service exposure, detail design, project specification and the latest approved technical data sheet. Chemical or water-contact suitability should be confirmed according to actual medium composition, concentration, pH, temperature, contact time, cleaning method and maintenance procedure.
Before tank service, key inspection should focus on steel readiness, BW8008 primer condition and BW3-9512 lining integrity.
Confirm clean, profiled and dry steel before primer application.
Check whether the BW8008 primer layer is continuous and ready for the main lining.
Verify the BW3-9512 lining before the tank is returned to service.
Use these checks to judge whether the BW8008 + BW3-9512 route fits the tank before final specification.
Prepared steel interiors with immersion exposure and demineralized water contact. Review stored medium, DFT and inspection before confirming suitability.
Steel oil tanks needing primer bonding and a thick-film polyurea lining. Review oil exposure, steel profile and adhesion before confirming suitability.
Projects that require review of surface preparation, medium, temperature and inspection standard.
Welds, nozzles, manholes, pipe penetrations, corners and bottom-to-wall transitions. Review details and pinholes before confirming suitability.
Do not plan consumption from area alone. Confirm steel condition, stored medium, target DFT and inspection requirement.
Key questions about using BW8008 and BW3-9512 for steel storage tank anti-corrosion service.
