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1.1 Pickling passivation treatment method There are various methods of pickling passivation for stainless steel equipment and parts depending on the operation. The impregnation method is used for parts that can be put into pickling tank or passivation tank, but it is not suitable for large equipment... Read More
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Heat treatment process generally includes heating, heat preservation, cooling three processes, sometimes only heating and cooling two processes.These processes are interconnected and uninterruptible. Heating is one of the important steps of heat treatment.There are many heating methods for metal ... Read More
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The non-uniform deformation of seamless steel tube becomes the residual stress after cold drawing under additional stress.Precision seamless steel tubes are widely used.General purpose seamless steel tubes are rolled from common carbon structural steels, low alloy structural steels or alloy ... Read More
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The inner and outer flanges of H-beam are parallel or nearly parallel, and the end of the flanges is at a right Angle, hence the name "parallel flange I-beam".H-beam web thickness is smaller than the same high webs of ordinary I-steel, flange width is larger than the same high webs of ordinary I... Read More
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