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High Temperature Pipeline Coating up to 302°F (150°C). Used on girth welds, pipe, fittings, valves and fabrication.
Description
Denso Protal 7900HT is a VOC free, 100% solids epoxy coating for pipelines operating at higher temperatures. It is a high-build liquid coating that can be hand or spray applied in one coat in the field or shop. It cures fast to allow quick backfill when applied to hot pipe.
Uses
Spray or hand applied to pipelines operating at temperatures up to 250°F (121°C). Used on girth welds, pipe, fittings, valves and fabrication.
Features
High build (up to 40 mils in one coat)
Can be spray or hand applied
Excellent adhesion
Service temperature up to 302°F (150°C)
Very low permeability
High abrasion resistance
Safe and environmentally responsible
Does not shield cathodic protection
Application
By Hand: Prepare surfaces by grit blasting to a clean near white finish, SSPC-SP 10/NACE No. 2. Mix each of the base and hardener to an even consistency. Add the hardener to base and mix until an even color is achieved making sure all sides of container are scraped. Product shall be applied to surfaces ranging from 40°F (4°C) to 220°F (105°C) at a minimum of 30 mils. Immediately pour mixed material onto surface and brush, trowel or roll to required mil thickness. A wet film thickness gauge should be used to measure mil thickness.
Spray: Prepare surfaces by grit blasting to a clean near white finish, SSPC-SP 10/NACE No. 2. The equipment should be a plural component airless spray unit with a proportioning pump capable of a volume mixing ratio of 3:1. Standard ancillary equipment should include minimum 10 gallon hoppers, static mixers, whip hose, and mastic gun. (Applicator should consult with Denso regarding recommended equipment). Product shall be applied to surfaces ranging from 40°F (4°C) to 220°F (105°C). A wet on wet spray technique should be used to achieve a minimum thickness of 30 mils. The coating thickness should be measured using a wet film thickness gauge.
Technical Data
Properties
Data
Solids Content
100%
Base Component - unmixed @ 77°F (25°C) Specific Gravity Viscosity Color
1.54 197,000 cps White
Hardener Component - unmixed @ 77°F (25°C) Specific Gravity Viscosity Color
1.43 90,000 cps Black
Mixed Material - mixed @ 77°F (25°C) Specific Gravity Viscosity Color
1.51 164,000 cps Gray
Mixing Ratio by Volume
3 parts base: 1 part hardener
Theoretical Coverage
14 ft2 / 30 mils / liter
Cure Times Pot Life @ 77°F (25°C), 100 gram Handling Time @ 77°F (25°C)
40 to 45 minutes 6 to 8 hours
Theoretical Coverage
14 ft2 (1.3 m2) / 30 mils / liter
Thickness Minimum Maximum
30 mils 60 mils
Holiday Detection
100 volts / mil
Hardness (ASTM 2240)
Shore D min. 85
Resistance to Cathodic Disbondment
Excellent
Abrasion Resistance
Excellent
Adhesion to Steel
3,030 psi
Maximum Service Temperature
250°F (121°C)
Intermittent Maximum Service Temperature
302°F (150°C)
Pot Life @ 77°F (25°C)
30 minutes
Initial Handling @ 77°F (25°C)
4 to 6 hours
Initial Handling @ 220°F (104°C)
15 to 20 minutes
Handling & Storage
Properties
Data
Storage
Minimum 24 months when stored in original containers above 40°F (4°C). On job-site where temperatures are below 68°F (20°C), product must be kept warm to mix properly.
Cleaning
Clean equipment with solvent cleaner (Xylene 95%, Butanol 5%).
Packaging
1.0 liter and 2.0 liter kits. For spray applications, sold in 75 liter and 800 liter drums. Special kit sizes are available on request.
Denso Protal 7900HT is a VOC free, 100% solids epoxy coating for pipelines operating at higher temperatures. It is a high-build liquid coating that can be hand or spray applied in one coat in the field or shop. It cures fast to allow quick backfill when applied to hot pipe.
Uses
Spray or hand applied to pipelines operating at temperatures up to 250°F (121°C). Used on girth welds, pipe, fittings, valves and fabrication.
Features
High build (up to 40 mils in one coat)
Can be spray or hand applied
Excellent adhesion
Service temperature up to 302°F (150°C)
Very low permeability
High abrasion resistance
Safe and environmentally responsible
Does not shield cathodic protection
Application
By Hand: Prepare surfaces by grit blasting to a clean near white finish, SSPC-SP 10/NACE No. 2. Mix each of the base and hardener to an even consistency. Add the hardener to base and mix until an even color is achieved making sure all sides of container are scraped. Product shall be applied to surfaces ranging from 40°F (4°C) to 220°F (105°C) at a minimum of 30 mils. Immediately pour mixed material onto surface and brush, trowel or roll to required mil thickness. A wet film thickness gauge should be used to measure mil thickness.
Spray: Prepare surfaces by grit blasting to a clean near white finish, SSPC-SP 10/NACE No. 2. The equipment should be a plural component airless spray unit with a proportioning pump capable of a volume mixing ratio of 3:1. Standard ancillary equipment should include minimum 10 gallon hoppers, static mixers, whip hose, and mastic gun. (Applicator should consult with Denso regarding recommended equipment). Product shall be applied to surfaces ranging from 40°F (4°C) to 220°F (105°C). A wet on wet spray technique should be used to achieve a minimum thickness of 30 mils. The coating thickness should be measured using a wet film thickness gauge.
Technical Data
Properties
Data
Solids Content
100%
Base Component - unmixed @ 77°F (25°C) Specific Gravity Viscosity Color
1.54 197,000 cps White
Hardener Component - unmixed @ 77°F (25°C) Specific Gravity Viscosity Color
1.43 90,000 cps Black
Mixed Material - mixed @ 77°F (25°C) Specific Gravity Viscosity Color
1.51 164,000 cps Gray
Mixing Ratio by Volume
3 parts base: 1 part hardener
Theoretical Coverage
14 ft2 / 30 mils / liter
Cure Times Pot Life @ 77°F (25°C), 100 gram Handling Time @ 77°F (25°C)
40 to 45 minutes 6 to 8 hours
Theoretical Coverage
14 ft2 (1.3 m2) / 30 mils / liter
Thickness Minimum Maximum
30 mils 60 mils
Holiday Detection
100 volts / mil
Hardness (ASTM 2240)
Shore D min. 85
Resistance to Cathodic Disbondment
Excellent
Abrasion Resistance
Excellent
Adhesion to Steel
3,030 psi
Maximum Service Temperature
250°F (121°C)
Intermittent Maximum Service Temperature
302°F (150°C)
Pot Life @ 77°F (25°C)
30 minutes
Initial Handling @ 77°F (25°C)
4 to 6 hours
Initial Handling @ 220°F (104°C)
15 to 20 minutes
Handling & Storage
Properties
Data
Storage
Minimum 24 months when stored in original containers above 40°F (4°C). On job-site where temperatures are below 68°F (20°C), product must be kept warm to mix properly.
Cleaning
Clean equipment with solvent cleaner (Xylene 95%, Butanol 5%).
Packaging
1.0 liter and 2.0 liter kits. For spray applications, sold in 75 liter and 800 liter drums. Special kit sizes are available on request.
