Pipelaying Tender-VOL II - WorleyParsons.com

EPMC SERVICES FOR REWARI – KANPUR PIPELINESPECIFICATION FOR CASING INSULATORS AND END SEALS FOR PIPELINE SYSTEM4. MATERIALCasing insulators shall be made of injection moulded high density polyethylene or othermaterial equivalent or superior as approved by WP/HPCL and shall meet the followingspecifications:Property Value ASTM Test MethodDielectric strength 450-500 Volts/Mil D-149Compressive strength 3200 psi D-695Tensile strength 3100-5000 psi D-638, D-651Impact strength 4.0 ft. lb. /inch of notch D-256Water Absorption 0.01% D-570n:\513-mh-2145-rkpl\11 engineering\11.8 pipelines\06 spec\specification for casing insulators and end seals forpipeline systems\mh2145-c000-pl-spc-0022.docMH2145-C000-PL-SPC-0022 RevA Page 8 of 18