Pipeline Special Anti-Corrosion Polyurea Coating

Model PS700A

Category Spray Polyurea Coatings

PS700A is a 100% solid aromatic polyurea coating specially developed for buried pipeline anti-corrosion protection. With excellent chemical resistance, flexibility, waterproof performance, and mechanical strength, it provides long-lasting protection against soil erosion, corrosion, and harsh underground environments.

Product Overview

PS700A is a 100% solid aromatic spray polyurea elastomer specially developed for anti-corrosion protection of buried pipelines. With stable physical performance, excellent wear resistance and strong environmental adaptability, it adapts to complex geological conditions, extreme temperatures and soil erosion. The material cures rapidly to form a seamless, joint-free protective film that effectively isolates moisture and corrosive media. With fast curing speed and long-term durability, PS700A is widely adopted for anti-corrosion engineering of oil & gas pipelines, municipal pipe networks and underground industrial facilities.

Key Features & Benefits

1. Outstanding Anti-Corrosion Performance

PS700A provides durable protection against various underground corrosive substances:

Excellent acid and alkali resistance
Superior salt and chloride corrosion resistance
Good tolerance to sulfide and industrial chemical erosion
Reliable waterproof barrier against soil moisture and groundwater

The dense coating structure effectively suppresses pipeline corrosion and extends the service life of buried infrastructure.

2. High Flexibility & Deformation Resistance

Featuring high elongation and elastic recovery, PS700A maintains intact coating without cracking or peeling under substrate changes:

Bridges tiny substrate cracks effectively
Adapts to slight pipeline deformation and displacement
Resists stress from ground settlement and temperature variation

It ensures long-term coating integrity and stable protection during pipeline operation.

3. Stable Aging & Mechanical Performance

The product possesses excellent aging resistance and consistent mechanical properties. It avoids common coating failures such as embrittlement, powdering and peeling in long-term underground service, reducing maintenance frequency and engineering costs.

4. Fast Curing & Efficient Construction

PS700A cures rapidly without sagging, enabling one-time spray film formation. It is applicable to horizontal, vertical, inclined and complex pipeline surfaces, perfectly suitable for large-scale pipeline anti-corrosion projects to improve construction efficiency and shorten project cycles.

5. Solvent-Free & Eco-Friendly

Adopting 100% solid content formula without any solvent or thinner, PS700A achieves zero VOC emissions. It eliminates hidden dangers caused by solvent volatilization and complies with international environmental protection construction standards.

Typical Applications

PS700A is widely used for anti-corrosion protection of buried pipelines in multiple industries:

Petrochemical Industry: Crude oil pipelines, natural gas transmission pipelines, petrochemical medium delivery pipelines
Municipal Engineering: Urban underground water supply, drainage and sewage treatment pipelines
Industrial Facilities: Buried steel pipelines and various corrosion-sensitive underground pipeline systems

Technical Advantages vs Traditional Coatings

Performance	PS700A Polyurea Coating	Traditional Coatings
Seamless Protection	Excellent integral joint-free film	Easy to produce gaps and dead corners
Curing Speed	Fast forming, high efficiency	Slow curing, long construction cycle
Flexibility & Crack Resistance	High flexibility, adaptive to deformation	Poor flexibility, easy to crack under stress
Chemical Resistance	Excellent comprehensive anti-corrosion resistance	Single resistance, poor comprehensive performance
Crack Bridging Ability	Covers tiny substrate cracks completely	Limited crack bridging capacity
Solvent Content	100% solids, solvent-free	Contains organic solvents and thinners
Environmental Performance	Zero VOC, environmentally friendly	VOC emissions, environmental risks

Technical Data

Material Basic Properties

Item	Part A	Part B
Appearance	Light Yellow	Adjustable
Specific Gravity	1.15	1.03
Viscosity @25℃	710 cps	580 cps
Solid Content	100%	100%
Mixing Ratio (Volume)	1:1
Gel Time @25℃	3-5 seconds
Theoretical Coverage	1.05 kg/m² (1mm dry film thickness)

Physical Performance Parameters

Item	Test Standard	Result
Hardness (Shore D)	ASTM D2240	45
Elongation at Break	ASTM D412	150%
Tensile Strength	ASTM D412	20 MPa
Tear Strength	ASTM D624	67 kN/m
Impermeability (0.3Mpa/30min)	HG/T3831-2006	Impermeable
Wear Resistance (750g/500r)	HG/T3831-2006	4.8 mg
Adhesion Strength (Concrete)	HG/T3831-2006	3.2 MPa
Adhesion Strength (Steel)	HG/T3831-2006	12 MPa
Density	GB/T 6750-2007	1.02 g/cm³
Cathodic Disbondment	HG/T3831-2006	≤15mm

Chemical Resistance Performance

Tested in accordance with GB/T9274-1988. The coating remains intact without rust, bubbles or peeling after long-term immersion tests:

Test Condition	Result
10% Sulfuric Acid / 30d	No rust, bubbles, or peeling
10% Hydrochloric Acid / 30d	No rust, bubbles, or peeling
10% Sodium Hydroxide / 30d	No rust, bubbles, or peeling
30g/L Salt Solution / 30d	No rust, bubbles, or peeling
Salt Spray Test / 2000h	No rust, bubbles, or peeling
0# Diesel & Crude Oil / 30d	No rust, bubbles, or peeling

Application Method

Surface Preparation

The substrate surface must be clean, dry, oil-free and dust-free without loose particles and defects to ensure stable coating adhesion.

Spray Application Notes

Fully stir Part B evenly before construction to mix deposited pigments completely; insufficient stirring will affect product quality.
Complete polyurea spraying within the valid Primer recoating interval.
Refer to HUISINS official specifications for primer application requirements.
Adopt professional two-component spraying equipment to ensure uniform film thickness and stable performance.

Recommended Equipment

Special high-pressure two-component polyurea spraying equipment with stable pressure control and accurate ratio system is required for standard construction.