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CHEMICAL RESISTANCE GUIDE

and stronger than the copolymer grade. Piping is normally PP-H. a few Chemline valves are also PP-H. The working temperature range of PP-H back pressure valves for example is 10 to 70°C (50 to 158°F). • Copolymer (PP-R) made from Type II resin produced from Random 94% propylene with 6% ethylene. PP-R is a bit softer but has better

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  Resistance, Chemical, Chemical resistance, Random, Copolymer

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