General seamless steel pipe production process can be divided into two kinds of cold-drawn and hot-rolled, cold-rolled seamless steel pipe production process is generally more complicated than hot-rolled, tube must first conduct a three-roll rolling, after extrusion to be sizing test, if no response cracking tube surface subjected to cutting machine for cutting, cut to a length of about one meter blank. Then enter 45 # seamless steel pipe annealing process, annealing use acidic pickling liquid, when pickling to note whether there is a lot of surface blistering produce, if a large number of bubble shows the quality of steel produced in response to reach standard. The appearance of cold-rolled seamless steel pipe shorter than hot-rolled seamless steel tubes, cold-rolled seamless steel pipe wall thickness is generally smaller than the hot-rolled seamless steel pipe, but the surface looks brighter than thick-walled seamless steel tubes, the surface is not too more rough, not too many glitches caliber. Hot-rolled seamless delivery status is generally rolled condition after heat treatment delivery. Hot-rolled seamless steel pipe after a rigorous inspection to be hand-picked staff, after the inspection to be coated with oil, then followed by cold drawing repeated experiments to be carried out after hot treatment perforation experiments If the perforation is too large will be carried expanding straightening correction. After straightening and then transferred by the transfer device to the testing machine for testing experiments, the final labeling, were placed into the warehouse layout specifications them. Grenada Shandong seamless steel pipe wall thickness specifications usually * with diameter (unit: mm), said. Such as: diameter 30mm bore 20mm wall thickness of 5mm is generally spoken pronounced: Φ30 * 5. Seamless steel pipe production methods can be divided into hot-rolled and cold rolled seamless steel pipe (allocated) seamless steel pipe into two categories. Hot-rolled seamless steel pipe sub-normal, low and medium pressure boiler pipe, high pressure boiler pipe, steel pipe, stainless steel pipe, oil cracking pipe, steel and other steel and other geological. Cold-rolled (allocated) Subject to sub-general seamless steel pipe, low pressure boiler pipe, high pressure boiler pipe, steel pipe, stainless steel pipe, oil cracking pipe, the other steel, including precision steel, carbon thin-walled steel, alloy thin wall pipe, thin-walled stainless steel, special steel pipe. Hot-rolled seamless pipe diameter is generally greater than 32mm, wall thickness 2.5-75mm, cold-rolled seamless steel pipe diameter can go to 6mm, wall thickness can be 0.25mm, outer diameter thin-walled tube to 5mm thickness less than 0.25mm, cold than hot-rolled high dimensional accuracy. In the pipeline project, when the diameter of more than 57mm, often used in hot-rolled thick-walled seamless pipe, 57mm diameter is smaller than the usual cold drawn (rolled) pipe. Pipe Co., Ltd., Shandong Liaocheng Grenada vigorously implement the "create a brand, reduce costs 35crmo walled seamless steel pipe, optimize resources, cultivate employees' business strategy, advanced culture to enhance their core competitiveness force 16mn thick-walled seamless form the "create a win-win," the core values ??and "do not speak excuse, top-notch" entrepreneurial spirit, out of a scientific concept of development as a guide to resource-saving, environmentally-friendly as the key to the product structure adjustment and build brands targeted scientific development. Our aim: to the credibility of survival to the quality and competitive strength and development in order to cooperate in good faith and we are committed to: All pipes are attached original material, endless holidays, 24-hour customer service. Dalian 16mn thick-walled seamless steel pipe suppliers from Grenada Pipe Co., Ltd., Shandong Liaocheng. Pipe Co., Ltd., Shandong Liaocheng Grenada (www.grqmgc.com) (www.grwfggc.com) strong, credible, Liaocheng in Shandong steel industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Shandong Grenada and you hand into the brilliant, for a better future! You can also access (www.grwfggc.com/supply_details_45375480.html), for more information about the company.