News Hainan Steel: Steel project construction process control points

1, Hainan steel construction in high strength bolt connection. The quality of even the high-strength bolts is an important factor affecting the quality of steel, high-strength bolts product manual torque coefficient is the calibration value at room temperature, the factors that affect a lot of torque coefficient, such as: ambient temperature, the final twist time, tighten the speed, especially on the maximum ambient temperature, under normal circumstances, the product manual torque coefficient is the calibration value at room temperature, in negative temperature should be re-calibrated, otherwise, upon the instructions given value control, has the potential to produce tensile stress bolt insufficient, reducing the safety of the structure, or leading to bolt tightening, affect the safety of the structure.
2, Hainan steel structure winter were negative temperature welding. Winter negative temperature welding and room temperature are very different, in the welding of welder training to master the negative temperature welding under the law, and require the specification of the electrode is baked and dried before use, in order to ensure the welding quality, ensure that the structure Safety.
3, the development of winter construction safety measures. Construction in winter low temperatures, factors that lead to accidents more, before construction to develop appropriate measures for winter construction safety, equipped with the necessary security products, construction workers safety education, especially high-altitude operations and special types of education, and enhance on-site construction management work to ensure the safety of construction projects