c purline 1.good quality and price 2.quick construction 3. ... size adjustable, big compressive strength etc..Through the forming of C steel, the section size, but is extremely complex roof purlins ... the steel mechanical performance into full play.The use of C type steel purlin roof, can reduce weight, reduce the ... win-win cooperation!Qingdao Jinbaofeng Steel Structure Co., Ltd C shaped steel purline