... Metal Material Co., Ltd, Qingdao Kaimingyuan International Trading Co., Ltd, Qingdao Wofeiteng Steel Pipe Co., Ltd and Qingdao Woming Steel Pipe Co.,Ltd,were ... in many types of steel products include steel pipe/tube, angle/U-channel steel, hot/cold rolled plate, deformed bar/ ... wire rod, hot dipped galvanized pipe and steel coils. These ...