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• About P-72
• Pipe Dimensions / Fittings
• P-72 Sheet & Weld Rod
• Piping Design Properties
• Installation of P-72
• P-72 Application Photos

What is P-72

  • Is a proprietary compound developed by Prince Rubber & Plastics specifically for the chlor-alkali, chlorate and pulp bleaching  chemical industries.

  •  Pipe is a styrene copolymer thermoplastic.
     
  •  Is extruded into pipe, and molded into sheet and fittings.  Custom configurations can be molded, extruded or thermoformed.  Its excellent machinability allows for the fabrication of many  accessory parts.
     
  •  Pipe is extruded in Schedules 40, 80, and 120 sizes, with the available option of FRP overwrap.
     
  •  Can be solvent-welded, thermally rod-welded and heat butt-welded, making ease of field installations and special fabrications.
     
  •  Can be utilized at temperatures up to 212 deg. F (100 deg. C). Overwrapping with FRP can extend P-72's temperature and  pressure ratings higher when desired.
     
  •  Has benefited companies worldwide with extended service life of piping systems and accessory parts, due to its excellent  corrosion resistance and high temperature capabilities.   

P-72 Compound of Styrene Copolymer

Representative Physical Properties *

PROPERTY

(ASTM)

RESULT

Color

 

Black

Hardness Rockwell "R"

(D-785)

115

Specific Gravity

(D-792)

1.07

Tensile Strength 73 deg.F

(D-638)

7000 (PSI)

Tensile Modulus 73 deg.F, X 10 5

(D-638)

3.4 (PSI)

Impact Strength, Izod Notched 73 deg.F

(D-256)

3.0 ft/lb.

Heat Deflection Temperature

 

 
 
1/2" Bar Annealed (264 PSI)

(D-648)

250 deg.F
 
1/2" Bar Annealed (66 PSI)

(D-648)

260 deg.F
 
1/2" Bar Annealed (0 PSI)

(D-648)

262 deg.F
 
1/2" Bar Un-Annealed (264 PSI)

(D-648)

232 deg.F

Flexural Yield Strength (Procedure B)

(D-790)

12,000 (PSI)

Flexural Modulus at 73 deg. F X 105

(D-790)

3.6 (PSI)

Coefficient Thermal Expansion
in./in./ deg.F X 10 -5

(D-696)

4.0

Dielectric Strength (Short time 1/8")

(D-149)

300-450 Volts/Mil.

* The physical properties and chemical recommendations noted are to be used as a guide only  and are based on tests believed to be reliable; however, we do not  guarantee these results to be obtained by others.


Chemical Resistance of P-72

 Typical  P-72 Service Applications

This Styrene Copolymer has excellent resistance to alkalis, mineral acids, phosphoric  and oleic acids, and mineral oils, as well the materials shown to the right. We do not recommend P-72 with low molecular weight  aromatics, ketones, esters or polychlorinated hydrocarbons.

*Consult your technical representative regarding individual applications. The information  may be considered as a basis for recommendations, but not as a guarantee. Material should be tested under actual service conditions to determine suitability.

Acidified Brine
Alkaline Brine
Brine (Sodium and Potassium Chlorides)
Chlorine Dioxide
Chlorine Dioxide in chilled H20
High ph Sodium Hypochlorite
Hot, Wet Chlorine Gas
Hydrogen Gas
Potassium Hydroxide (to 33% conc.)
Sodium Chlorate
Sodium Hydroxide (Caustic Soda to 50% conc.)
Sulfur Dioxide
Ultra-Pure Brine
 
 

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