The method of manufacturing the high-pressure tube fittings Hebei Chiho tee high pressure pipe industry, in order to use less power equipment manufacture a variety of specifications of better quality. The method of the present invention is to be made torpedo tube and in which the department to open a small hole, the tube is heated to a temperature in a forged upper mold and the lower mold having a curved surface in the middle, in the mold of the tube radial Shi At the same pressure, with mounted axial bore holes along the inside of the pull block stretch at a constant rate so that the molding. Specifications constant high pressure tee and progress blast furnace coal injection quantity is the most effective ways to reduce the cost of one. The use of 'superalloy ceramic pulverized gun' progress not only use the gun itself life, but also for asylum outlet, adding wind blast off to create a premise, but the main thing is the constant and progressive coal rate, complete blast high air temperature oxygen-rich, it has a large injection pivotal role. Hebei Chiho-strength carbon steel pipe industry tee tee shot peening impact strength parameters are: projectile diameter, flow velocity projectile, projectile flow, shot peening time. The larger diameter carbon steel tee projectile, the faster, the greater the projectile momentum collision with the workpiece, the greater the intensity of the shot peening. Residual compressive stress shot up to 60 percent form part material tensile strength, residual compressive stress layer depth is usually up to 0.25mm, the maximum limit of about 1mm. Shot peening intensity take some time to ensure that, after a certain period of time the price of carbon steel tee, after blasting intensity reached saturation, and then extend the peening time, intensity no longer increased significantly. Almen test the strength of the shot peening, shot peening intensity characterize the deformation of the specimen high arch. q235 carbon steel tee, carbon steel tee, Hebei Chiho Chiho by Hebei Industry Co., Ltd. Hebei Chiho Pipe Co., Ltd. (www.hbqh628.com) (www.hbqh628.com) strong, credible, Cangzhou in Hebei forging industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Hebei Chiho into the brilliant and you work for a better future!