HS Gas Pipe Coating 87831

PRODUCT DATASHEET

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Product characteristics

Recommended use
As a one-coat system for internal coating of gas pipes designed for carrying of dry, treated gas. The coating is designed to reduce the drag resistance in the pipeline by making the pipe walls smoother.

Service temperature

• Maximum, dry exposure only: 120 °C [248°F].

Certificates / Approvals

• Tested and assessed according to API RP 5L2
• Tested and assessed according to ISO 15741
• Tested and assessed according to DIN EN 10301

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Product safety

Flash point
28°C [82°F]

VOC content mixed product

Legislation	Value
EU	155 g/L [1.29 lb/US gal]
US (coatings)	155 g/L [1.29 lb/US gal]
US (regulatory)	155 g/L [1.29 lb/US gal]
China	155 g/L [1.29 lb/US gal]

Handling
Handle with care. Before and during use, observe safety labels on packaging and paint containers and follow all local and national safety regulations. Always consult Hempel’s Safety Data Sheet for this product along with the Product Data Sheet.

For professional use only.

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Product data

Parameter	Value
Product code	87831
Product components	Base 87838, Curing Agent 95830
Standard shade / code	Brownish red 50610 *
Gloss	Glossy
Volume solids	82 ± 2%
Specific gravity	1.4 kg/L [12 lb/US gal]
Reference dry film thickness	80 micron [3.2 mils]
Aluminium shade / code	Dark brown 67120 **
Aluminium volume solids	81 ± 2%

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Surface preparation

Cleanliness

• Remove oil, grease, salts, contaminants.
• High pressure fresh water cleaning.

New build

• Abrasive blasting to min. Sa 2½ (ISO 8501-1) / SP 10 (SSPC)
• Remove dust, blast media.

Maintenance and Repair

• As per Hempel’s Specification.

Roughness

• Surface profile Fine (S) (ISO 8503-2).

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Application

Mixing ratio
Base 87838 : Curing Agent 95830 (4:1 by volume)
Stir well before use.

Cleaner
Hempel’s Thinner 08450

Pot life

Product temperature	Pot life
60°C [140°F]	9 min

Application method

Tool	Parameters
Dual feed spray	150 bar [2200 psi], 0.017–0.027″

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Film thickness

	Low	High	Recommended
Dry film thickness	50 µm [2.0 mils]	100 µm [4.0 mils]	80 µm [3.2 mils]
Wet film thickness	61 µm [2.4 mils]	122 µm [4.9 mils]	98 µm [3.9 mils]
Theoretical spread rate	16 m²/L	8.2 m²/L	10 m²/L

Product may be specified in another film thickness than indicated depending on purpose and area of use. This will alter spreading rate, drying and curing time and overcoating interval. Overthickness must be closely controlled and never locally exceed 150 micron [6.0 mils] DFT. On irregular surfaces it is recommended to employ special care in avoiding over application.

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Application conditions

• Surface must be clean, dry, at least 3°C above dew point
• Surface temperature >10°C [50°F]
• Max material temp 60°C [140°F]
• RH: 30–85% during application and curing

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Drying and overcoating

Product compatibility

• Previous coat: None
• Subsequent coat: None

Drying time (for 80 µm DFT)

Surface temperature	Hard dry hours
10°C [50°F]	10
20°C [68°F]	4½
30°C [86°F]	2
40°C [104°F]	1

Drying conditions

• Sufficient ventilation is important

Overcoating details

• If maximum overcoating interval is exceeded, roughen surface
• Surface must be dry and clean prior to overcoat

Other remarks

• Epoxy chalks in outdoor exposure, does not affect performance
• Hempel’s Specification supersedes this PDS if in conflict

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Storage

Shelf life

Ambient temperature	Base	Curing Agent
25°C [77°F]	12 m	36 m

Storage conditions

• Max 40°C [104°F], protect from sunlight, rain, and snow
• Store per local legislation

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Carbon Footprint

Dry film thickness	GWP
1 µm	7.4 g CO₂e/m²
1 mil	0.039 lb CO₂e/ft²

The footprint includes raw materials, in-bound transport, manufacturing, VOCs during/after application.
Values may vary with shade.

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References

Product Data Sheet – HS Gas Pipe Coating 87831
Issued by Hempel A/S – April 2025
Document Version: 4/4
Source: https://www.hempel.com

Technical Guidelines and Explanatory Notes
Last accessed: 28 May 2025
Reference link: https://www.hempel.com/service-and-support/technical-guidelines

Note: Always consult the latest version of the Product Data Sheet and associated documents directly from Hempel’s official website to ensure accuracy and compliance with the most current recommendations.