Welded steel pipes are made by crimping steel plates, bending them into a circle, and then welding the joints together. Seamless steel pipe is directly processed by round steel piercing or hot rolling process, so there is no weld on the outer surface. The performance of seamless steel pipe is better than that of welded steel pipe, and the price of seamless steel pipe is also higher. There are some differences in chemical composition between RINA AH40 marine steel sheet, welded steel pipe and seamless steel pipe. The material of welded steel pipe contains the chemical composition suitable for welding.
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Flame cutting mainly uses the combustion reaction of fuel and oxygen. The factors that affect the combustion reaction mainly include the purity of oxygen, the flow rate of oxygen, and the shape of the oxygen gas flow. The greater the oxygen flow rate, the greater the heat produced by combustion, the faster the cutting speed, and the higher the quality of the cut. BBN steel can supply RINA AH40 marine steel sheet product for construction machinery, pressure vessel, mining equipment.
The RINA AH40 marine steel sheet, heavy steel marine steel plate has the characteristics of pure steel, stable performance and good surface quality, and can be delivered at full scale. The marine steel plates are widely used in the construction of the main structure and superstructure of 10,000-ton ocean-going ships, and can also be used to manufacture the hull structure of inland ships. With the improvement of equipment level and the continuous progress of technology, heavy steel marine plate has made great progress in the production of high-strength shipbuilding steel plates, and its products are extending to the high-end market.
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