Normal strength shipbuilding structural steel is divided into four grades: A, B, C, and D. The yield strength (not less than 235N/mm^2) of GL-F32 cargo barge steel plate these four grades is the same as the tensile strength (400~520N/mm^2). However, the impact properties of steel plates at different temperatures are different.
On Jan. 31, 2019, BBN steel held the annual meeting with all employees, family members, and friends. It is a moment of joyand it is a moment to summarize the past and look forward.Looking back on 2018, BBN steel exported GL-F32 cargo barge steel plate more than 2 million tons of steel materials to all parts of the world and made outstanding contributions to infrastructure construction at home and abroad. In 2019, BBN steel will make persistent efforts and forge ahead.
Galvanized seamless steel pipes are widely used, and can be divided into low and medium pressure galvanized seamless steel pipes, high-pressure galvanized seamless steel pipes, and stainless steel galvanized seamless steel pipes according to different requirements. Steel pipe GL-F32 cargo barge steel plate can be used for industrial pipes with different pressures such as water vapor, air, oil, and gas.
In order to obtain the seamless tube with smaller size and better quality, the method of cold rolling, cold drawing or the combination of the two must be used. Cold rolling is usually carried out on a two high mill, and GL-F32 cargo barge steel plate pipes are rolled in a circular pass composed of a variable cross-section circular groove and a fixed conical head. Cold drawing is usually carried out on single chain or double chain cold drawing machines of 0.5-100t.
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