مقالات تخصصی

مقالات تخصصی

August 12, 2018

مشخصات جداره رایزر | RISER WALL CONSTRUCTION

مشخصات جداره رایزر | RISER WALL CONSTRUCTION KianSanat Pasargad manufactures manhole risers using a spiral winding process. In spiral winding, a flatpolyethylene extrudate is wound over […]