What is the notice of preheating before p265gh steel number cutting

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At present, the cutting thickness limit of laser cutting is 20 mm. However, it should be noted that oxygen will be added into the laser beam to cut 20 mm thick P265GH steel number steel plate, which will form a thin oxide film on the cutting surface, which may affect the cutting quality, Therefore, attention should be paid to this point to avoid problems.

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P355NL2 steel plate executive standard: EN10028-3. p265gh steel number, P355NL2 steel plate is special alloy steel for pressure equipment. It has good plasticity, toughness, cold bending property and weldability. P355NL2 steel plate is European standard low temperature vessel plate, which is widely used in petroleum, chemical, power station, boiler and other industries. The size, shape and allowable deviation of P355NL2 steel plate shall meet the requirements of EN10028-1 2007 + A1:2009.