... in time, cost savings; Steel construction, Construction projects, Construction materialThis kind of Steel construction is composed of beams, columns, ... strength bolts, which greatly speeds the construction progress rate and saves construction cost1. Certificate: ISO 14001:2004, ... convenience.Contact: Mr. Stephen ZhengHangzhou Hanyu Grid Structure Co., LtdAdd.: Shu'nan Village Hezhuang Town, Xiaoshan ...