 SPRING, Texas--BUSINESS WIRE--Perma-Pipe International Holdings, Inc. Nasdaq: PPIH today announced its subsidiary Perma-Pipe India Pvt. Ltd. PPIL has been awarded a 6.7 million contract by JSIW Infrastructure Pvt. Ltd. JSIW for application of a thermal insulation system on pipe to be used for the construction of the 12 diameter, 74 km long Mangla crude oil pipeline. The skin effect heat traced and insulated crude oil pipeline is being developed by HPCL Rajasthan Refinery Ltd HRRL a 