Tempering includes high temperature tempering, medium temperature tempering and low temperature tempering. Tempering means to reheat the BV grade B barge carrier steel quenched steel to a certain temperature and then cool it in a certain way. Tempering can reduce or eliminate the internal stress produced by quenching, reduce the hardness and strength, and improve the ductility or toughness of steel. After BV grade B barge carrier steel quenching, the workpiece should be tempered in time, and the required mechanical properties can be obtained through the combination of quenching and tempering.
The yield strength of BV grade B barge carrier steel A32, D32, E32, F32 is not less than 315N/mm^2, and the tensile strength is 440~570N/mm^2. The grades A, D, E and F indicate that they can be 0 and -20 respectively. The impact toughness can reach -40℃, -60℃.
BBN can provide hot-rolled and cold-rolled steel plates, as well as special processing and cutting (any size and shape) drilling, welding, milling, BV grade B barge carrier steel processing and steel structures according to drawings. Welcome new and old customers to purchase steel plate from BBN.
"Efficiency is benefit, time is money", the company is equipped with a high standard logistics team. After the products pass the factory inspection, they will coordinate the shipment as soon as possible according to customer requirements and schedules to hand over the booked steel materials to customers at the first time, to ensure no delay of customer's project progress, to strive for more project preparation time for customers.
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