General seamless stainless tube production process can be divided into cold drawing and hot rolled, cold rolled seamless steel tube production process generally more complicated than hot rolled, three-roll rolling tube billet must first, after the extrusion sizing test, if there is no response after crack on the surface of pipe have to be cut after cutting machine, cutting grow about a meter of billet. And then enter the annealing process, annealing with acid pickling liquid, pickling when should pay attention to whether there is a lot of bubble surface, if there is a lot of bubbles show that the quality of the steel tube are not up to the standard of the response. Appearance on cold rolled seamless steel tube is shorter in hot rolled seamless steel pipe, cold rolled seamless steel tube wall thickness generally smaller than hot rolled seamless steel tube, but the surface looks brighter than the thick wall seamless steel tube, not a lot of rough surface, the diameter is not a lot of burr.
Cold drawn or cold rolled precision seamless steel tube (GB3639-83) is used in the mechanical structure, hydraulic equipment of high dimensional accuracy and surface finish good cold drawn or cold rolled precision seamless steel tube. Choose precision seamless steel tube manufacturing mechanical structure or hydraulic equipment, etc., can greatly save the machining time, improve material utilization, at the same time to improve the quality of the product.
304L stainless steel tube is a kind of common stainless steel tube, it is widely used to make for a good comprehensive performance, corrosion resistance and form ability of equipment and parts. 304L stainless steel pipe is stainless steel, heat-resistant steel is widely used. Used in food production equipment, general chemical equipment, nuclear power, etc. Is a kind of commonly used stainless steel, superior performance used more widely.
Stainless steel pipe used as heat resistant stainless steel is widely, used in petroleum, chemical, medical, food, light industry, machinery, instrument, such as industrial pipeline and mechanical structure parts and equipment used for food, general chemical equipment, atomic energy industrial equipment.304L stainless steel seamless pipe rust resistance is better than 200 series stainless steel materials. High resistance to high temperature also is better, can to 1000-1200 degrees. 304L stainless steel has good corrosion and corrosion resistance and good resistance to intergranular corrosion.
304L stainless steel material in the concentration of 65% or less under the boiling temperature of nitric acid, strong corrosion resistance. To most organic and inorganic acid and alkali solution with good corrosion resistance ability. In the air or chemical corrosion resistant to corrosion medium of a kind of high alloy steel, stainless steel is a beautiful surface and corrosion resistant performance is good.