The first step in the processing of raw materials for stainless steel products as raw materials, the importance of Chongqing steel pipe production process, the quality is directly related to the merits of stainless steel pipe products, stainless steel manufacturers should be strict quality control in the production of stainless steel pipe, from the first Step raw materials to start, continuation of customers for products and brands for a long time at home. On the other hand, some companies may be forced within the industry development pressure stainless steel column, in the selection of raw materials, quietly lowered the standard stainless steel, some unqualified products into the market, the entire stainless steel welded pipe industry have brought a bad influence, So it is an urgent demand for raw materials specification. Stainless steel welded pipe end products most used 201A, for example, currently, the domestic market circulation pipes 201A material, although the same name, but because there is no uniform national standards, a variety of its chemical composition, containing nickel, for example , 1%, 0.5%, nickel, etc. Others, such as copper also has more than 1%, 0.5%, and also whether the copper and other stainless steel screens, plus various other chemical ingredients, almost every hot-rolled strip mill has its own standards, and some even a simultaneous production of several steel products, hot-rolled strip steel after cold rolling production of decorative tubes and products, not only a large number of domestic sales, and export to Southeast Asia, South Asia Middle East and other countries and regions, due to the amount of nickel and 201 in the United States is far from the standard, and thus also to foreign customers leave management confusion, low grade bad impression. Currently stainless steel trash can, the chaotic state of the stainless steel raw material industry since the stainless steel welded pipe is large-scale applications in China's most chaotic period. Chongqing stainless steel processing of stainless steel hardening heat treatment and quenching and tempering main purpose is hardening, after the hardening material is heated to a temperature below the phase transition point, the use of appropriate hardening prick rapid cooling. In order to improve the toughness after tempering is quenched material, to obtain the desired degree of heat treatment is carried out. It is heated to a temperature as shown in the following transformation point Xu is cooled. It is believed that the heating rate and holding time is basically the same annealing conditions. For ferritic stainless steel type, heat treatment is intended to soften the tissue and adjusting end product organization, often annealing. Standard incubation time is based on the material thickness or diameter for every 25 mm, to be incubated for 1 hour or more terms, from the perspective of preventing deformation, should avoid excessive heating rate. Stainless steel processing _ _ Yao Yi Stainless Steel Products Co. Chongqing provided by Chongqing Yao Yi Stainless Steel Products Limited. Stainless Steel Products Co., Ltd. Chongqing Yi Yao (www.shudumy.com) strong, credible, in Chongqing, Chongqing stainless steel products and other industries and has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead the Arts Yiu stainless steel and you hand into the brilliant, for a better future!