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One-Component Modified Polyurea Heavy-Duty Anti-Corrosion Coating

BW6-959

One-component modified polyurea heavy-duty anti-corrosion coating for prepared pipelines, tanks, steel structures and industrial maintenance surfaces. It forms a dense protective layer for corrosion-resistant and wear-resistant maintenance.

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Gray protective coating on industrial pipeline and valve surfaces

Product Description

BW6-959 is a one-component modified polyurea heavy-duty anti-corrosion coating synthesized from an MDI resin prepolymer. The cured coating film forms a dense, tough structure that can adapt to slight deformation of industrial metal structures caused by vibration, thermal expansion and contraction. It helps block air, moisture and corrosive media, delaying corrosion on metal structures. The coating film contains urea bonds, biuret bonds, urethane bonds and hydrogen bonds, supporting mechanical properties and long-lasting anti-corrosion performance.

BW6-959 one-component modified polyurea heavy-duty anti-corrosion coating official product packaging

Application Scope

BW6-959 is used for corrosion-protection, waterproofing and protective coating work in petroleum, chemical, transportation, construction, electric power and other industrial enterprises.

  • Petroleum and chemical sitesProtective coating review for prepared pipelines, equipment surfaces and compatible corrosion-protection details.
  • Storage tanks and metal structuresMaintenance coating for prepared tanks, steel structures and industrial metal renovation work.
  • Transportation and construction facilitiesIndustrial waterproofing and protective coating for reviewed steel, concrete and related facility surfaces.
  • Electric power and plant maintenanceCorrosion-protection review for prepared plant assets where adhesion, media exposure and application method are confirmed.

Designed to Protect Prepared Industrial Surfaces

BW6-959 helps form a compact corrosion-protection film on prepared pipelines, tanks and steel structures. It is suitable when the project needs a one-component coating route with practical spray, brush or roller application.

2000 hSalt SpraySupports corrosion-protection review under the listed laboratory salt-spray condition.
5ASteel AdhesionShows strong adhesion reference on prepared steel substrate under ASTM D-3359.
2HPencil HardnessProvides a practical hardness reference for industrial maintenance coating selection.
30 dAcid ResistanceSupports chemical-resistance review under the listed 50% H2SO4 or 15% HCl test condition.

Product Features and Advantages

BW6-959 combines one-component handling with dense anti-corrosion film formation, helping protect prepared industrial surfaces from moisture, air, selected corrosive media and mechanical wear.

Protective Film Performance

  • Strong Substrate AdhesionSupports firm bonding to carbon steel, concrete and other prepared substrates for industrial corrosion-protection work.
  • Dense Flexible FilmThe cured coating is compact and flexible, helping resist minor deformation from vibration and thermal expansion.
  • Mechanical ProtectionThe coating provides wear, impact and scratch resistance for industrial protective coating service.
  • Waterproof and Corrosion ResistanceHelps reduce penetration of water, air and selected corrosive media on prepared industrial surfaces.

Application and Field Handling

  • One-Component Modified PolyureaSingle-component handling avoids mix-ratio errors associated with multi-component coatings.
  • Multiple Coating MethodsThe guide lists airless spray, air spray, brush and roller for reviewed site conditions.
  • Recoat Window ControlThe 4-24 h recoat interval helps plan multi-coat work; sand or blast and clean the surface if the interval is exceeded or dust is deposited.
  • Low-Temperature HandlingLow-temperature work requires bucket preconditioning and controlled material handling before application.

Technical Data

These technical values are measured under controlled laboratory conditions to support product comparison, project selection and specification review. Please confirm final requirements with the latest approved TDS and project-specific conditions.

Product Information

ItemResult
AppearanceColor adjustable
Viscosity (cps) @ 20°C250
Solid content (%)≥65
Surface dry time (h)2-4
Pot life (h)1
Theoretical coverage0.13 kg/m2 at 100 µm film thickness

Physical Properties

ItemTest standardResult
Pencil hardnessGB / T 6739-20062H
Bending test (cylindrical mandrel) mmGB / T 6742-19861
Breakdown resistance strength (kV / mm)HG / T 3330-1980250
Impact resistance (kg.cm)GB / T 173260
Resistance to temperature changes (-40 to +150°C), 24 hGB / 9278-1988No abnormality
Adhesion, steel substrateASTM D-33595A (highest grade)
Density (g/cm³)GB / T 6750-20071.03

Chemical Resistance

For reference: pay attention to ventilation, splash and spillage effects. Independent immersion testing is recommended when detailed project-specific data is required.

Exposure itemResult
Acid resistance 50% H2SO4 or 15% HCl, 30 dNo corrosion, no blistering, no peeling
Alkali resistance 50% NaOH, 30 dNo corrosion, no blistering, no peeling
Salt resistance 50 g/L, 30 dNo corrosion, no blistering, no peeling
Salt spray resistance, 2000 hNo corrosion, no blistering, no peeling
Oil resistance, 0# diesel and crude oil, 30 dNo blistering, no peeling

Application Environment and Guide

Stable coating performance depends on site conditions, substrate preparation, film thickness, recoat timing and material handling. Review the application environment and guide values before installation, and confirm final parameters with the latest TDS and project requirements.

Application environment

Check site temperature, humidity and dew point before coating prepared metal or concrete surfaces.

ConditionRequirement
Environment temperature-5°C to 35°C
Relative humidity35-85% RH
Dew pointFor metal surfaces, substrate temperature should be at least 3°C above the dew point

Substrate preparation

Prepare each substrate according to the technical sheet before full application.

SubstratePreparation requirement
Metal surfaceSand blast to ISO 8501-1 or GB 8923 Sa2.5; electric-tool polish to St3 is also listed
Concrete surfaceStrong, compact, flat, clean and dry; repair sanding, shelling, cracks, honeycombs and pitted defects as needed
Wood surfaceClean and dry, with no burrs, debris or loose fragments
Other substratesConsult BW technical personnel before application

Application instructions

Use the coating method, recoat interval and handling notes below for project planning.

Guide itemRecommendation
Theoretical coverage reference0.13 kg/m2 at 100 µm; final film build according to the latest TDS and project requirements
Recommended dry film thickness100-200 µm, or as design requirements
Recoat interval4-24 h; if over 24 h or dust is deposited, sandblast and clean before application
Coating methodAirless spray, air spray, brush or roller
Low-temperature useCan be used at -10°C; for low-temperature use, keep the coating bucket in an air-conditioned room for more than 24 hours before use
Material handlingStir evenly, pour out only the required amount, seal immediately, and use poured material within 1 hour
Thinner controlDo not add thinner without supplier approval and guidance for the designated special thinner

Chemical resistance

For reference: pay attention to ventilation, splash and spillage effects. Independent immersion testing is recommended when detailed project-specific data is required.

Exposure itemResult
Acid resistance 50% H2SO4 or 15% HCl, 30 dNo corrosion, no blistering, no peeling
Alkali resistance 50% NaOH, 30 dNo corrosion, no blistering, no peeling
Salt resistance 50 g/L, 30 dNo corrosion, no blistering, no peeling
Salt spray resistance, 2000 hNo corrosion, no blistering, no peeling
Oil resistance, 0# diesel and crude oil, 30 dNo blistering, no peeling

Product Curing Time, Shelf Life and Packing

Use the listed curing profile, shelf life, packing and storage requirements for application scheduling, warehouse handling and order planning.

Product Curing Time

The curing time varies with the environment condition, especially temperature and relative humidity.

Substrate temperatureSurface dry timeFoot trafficSolid dry time
+10°C6 h24 h7 d
+20°C3 h12 h6 d
+30°C2 h8 h5 d

Shelf Life & Packing

ItemDetails
Package5 kg/bucket, 20 kg/bucket
Shelf life10 months unopened
Storage temperature5-35°C
Storage precautionStore in a cool, ventilated place; avoid direct sunshine and keep away from heat

Product Health and Safety Information

Product Health and Safety Information

For information and advice on the safe handling, storage and disposal of chemical products, users shall refer to the most recent Safety Data Sheet containing physical, ecological, toxicological and other safety-related data.

Integrity Declaration

Colorful Whale Advanced Materials (Shanghai) Co., Ltd. guarantees that the technical data stated in this sheet is based on laboratory tests. Actual testing methods may vary due to different circumstances. Users should test and verify applicability. Colorful Whale Advanced Materials (Shanghai) Co., Ltd. does not take any other responsibility except product quality and reserves the right to modify the listed data without prior notice.

FAQ about BW6-959 industrial corrosion protection coating.

These answers follow the BW6-959 technical sheet and focus on industrial buyers, substrates, corrosive media and application methods.

BW6-959 is a one-component modified polyurea heavy-duty anti-corrosion coating for prepared pipelines, tanks, steel structures and selected industrial maintenance surfaces.

It can be reviewed for pipeline maintenance, tank exterior or reviewed tank service, steel renovation, equipment coating and prepared concrete industrial protection after exposure and substrate checks.

Permanent immersion or highly specific chemical service should not be assumed from the page. Review the listed test data and request project-specific compatibility guidance.

Metal surfaces should be prepared according to the listed Sa2.5 or St3 guidance, and primer or surface-condition requirements should be reviewed before full application.

BW6-959 can be reviewed for airless spray, air spray, brush or roller application, with opened-material handling and final film build confirmed by the latest TDS and site conditions.

Use the listed test data for the stated acids, alkali, salt, diesel and crude oil conditions. Laboratory results should not be presented as unlimited media coverage.

Buyers can request the latest TDS, SDS, application guidance, available test data and project-specific corrosion-protection review before ordering.

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If you are evaluating BW6-959 for pipelines, tanks, steel structure renovation, prepared concrete or industrial corrosive-media exposure, request the latest technical data sheet and project-specific compatibility review before ordering.

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