Reference Standard GB 191 packaging Pictorial marking basic form GB 699 high-quality carbon steel structural conditions GB 700 GB 783 carbon steel cranes up to GB 985 Series gas welding, SMAW and GMAW welding groove and dimensions GB 986 submerged arc weld groove basic forms and sizes round strand wire rope GB 1102 2. Work a. After (or when the load reaches the maximum weight) class for the first time when lifting heavy double girder gantry crane, lifting height of 0.5 m should be off the ground, the weight is lowered again, check the brake performance gantry wheel pressure, after reliable confirmation then normal operation. b. The operator in the job, should be required for the following job-ringing alarm. ① lifting, landing weight; start big, when the car driving. Gantry crane gantry crane ② clear line of sight when traveling through to continuous-ringing alarm; ③ crane with another crane when approaching cross inside. ④ lifting heavy objects close to the staff. Zhenjiang gantry crane gantry crane _ _ Heavy generous generous by heavy machinery Co., Ltd., Henan Province. Heavy Machinery Co., Ltd., Henan Province, generous (www.hnqizhongshebei.com) (www.hnqizhongshebei.com) strong, credible, in Zhengzhou, Henan engineering, construction crane industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving generous innovative ideas will lead into the brilliant heavy and you work for a better future!