polyguard rd-6 170 non shielding coating

ADVANTAGE #1: RD-6™ 170 is a non-shielding coating. This means that if the coating ever becomes disbonded, the pipeline is still protected because cathodic protection currents can reach the disbonded area. Once there, the current will raise the pH of the water underneath the disbonded area to 9 or higher – a level too high to support corrosion. Additionally, the geotextile fabric backing of RD-6™ 170 does not shield cathodic protection currents.

ADVANTAGE #2: RD-6™ 170 is less likely to fail (to become disbonded) because:

• RD-6™ 170 resists disbondment from the pipe, even if surface preparation is less than perfect.

• RD-6™ 170 is highly resistant to soil stress, a major cause of coating disbondment.

• RD-6™ 170 installs faster than almost any other coating, and requires no cure.

ADVANTAGE #3: RD-6™ 170 is not a tape. North American pipeline operators have virtually banished solid film backed tapes and shrink sleeves. RD-6™ 170 is quite different.

Polyguard RD-6 170 Coating

RD-6™ 170 pipeline corrosion coating is a system that allows cathodic protection currents to reach any disbonded area which occurs on the pipeline.

RD-6™ 170 is a high temperature version of the Polyguard breakthrough product, the RD-6™. It is used in areas where a higher resistance to internal pipe temperatures is required.

PROPERTY	ASTM METHOD	TYPICAL RESULTS (METRIC)	TYPICAL RESULTS (ENGLISH)
Total Thickness - Single layer	D 1000	1.27 mm	0.05 inches (50 mils)
Tensile Strength, Wrap Direction	D 4632	34 kN/m	200 lbf/inch width
Tensile Strength, PSI	D 4632	24.1 MPa	3500 PSI
Elongation % at break (geotextile backing)	D 4632	< 20%	< 20%
Product Temperature Limit	Internal Polyguard	77° C	170° F
Water Vapor Transmission Rate	E 96 Procedure B	.006 g/h•m2	.009 grains/h•ft2
Puncture Resistance	E 154	1379 kPa	200 PSI
Burst Strength	D 751	2413 kPa	350 PSI
Cathodic Disbondment77°F (25°C), 30 days, 1.5v	G 8	< 5 mm	< 5 mm (.197 in.)
Cathodic Disbondment 150°F (66°C), 90 days, 3.0v	G 42	< 10 mm	< 10 mm (.4 in.)
Non-shielding properties	Internal Polyguard*	Pass (non-shielding)	Pass (non-shielding)
Dielectric Strength (breakdown voltage, KV)	D 149	> 12 KV	> 12 KV
Adhesion to primed surface	D 1000 Method A	2.1 kN/m	12 lbf/inch width
Adhesion to polyethylene	D 1000 Method A	2.1 kN/m	12 lbf/inch width
Impact Resistance	D 1000 Method A	2.6 N/m	23.0 inch lb.

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