Wholesale stainless steel head manufacturers, stainless steel head, Hebei Kwong Lam fittings

Stainless steel head - Shelf stainless steel head -304 stainless steel head - wide forest produce stainless steel head professional manufacturer Cangzhou Sino Pipeline Equipment Co., Ltd. stainless steel head in the heating and cooling process, the cooling rate of the surface layer and the core portion and Time inconsistency stainless steel head models, forming temperature, volume expansion and contraction will cause uneven stress that the heat stress. Under thermal stress due to a temperature below the surface began to Heart Ministry, the Ministry of contraction is also greater than leaving the center core portion is pulled, when the end of the cooling, since the central portion finally cooled volumetric shrinkage can not freely leaving the surface pressure on core section tension. That is the role of thermal stress and finally to the workpiece surface under pressure and heart Ministry tension. This phenomenon is cooled velocity, material composition and heat treatment and other factors. When cooled, the faster, the higher the carbon content and alloy composition, uneven plastic deformation larger stainless steel head cooling process under thermal stress generated, the final form of the residual stress gets. On the other hand the steel during heat treatment changes due to tissue i.e. when austenite to martensite, accompanied by the increase of the specific volume of the volume expansion of the workpiece, each part of the workpiece has a phase change, resulting in inconsistent produce tissue volume grew stress. Stainless steel head - Shelf stainless steel head -304 stainless steel head - Sino produce stainless steel head professional manufacturer of stainless steel head -304 Stainless steel head - large diameter 304 stainless steel head manufacturers, specializing in the production of heavy-duty stainless steel head closure head, expansion joints, oval head, butterfly head stainless steel head standard cone head, ladle, pressure vessel heads Hebei-based head companies. Hebei Kwong Lam Tube Co., Ltd., is approved by the State Administration of Quality Supervision, Inspection and Quarantine issued the license of A3 class boiler and pressure vessel manufacturing units with head. The main equipment: heavy equipment head 8000T double-action hydraulic press, 5000T, 1800T, hydraulic machine; ￠ 8600 × 40mm spinning machine; 60 * 3200 CNC bending machine and other specialized production equipment and 7.5m × 7.0m × 2.4m automatic NC heating oil furnace, ￠ 8000 Pit gas furnace heating, heat treatment equipment; With the development of enterprises of all kinds of welding equipment, lifting equipment has been gradually meet the growing demand for the product. Existing 64 ? testing room a ray detection machine, ultrasonic flaw detector, magnetic detection machines, physical and chemical analysis equipment test multiple testing equipment to ensure product quality requirements. Main products: a variety of oval ∮89-∮6600mm thickness of 400mm diameter within the hemispherical head, dished, spherical cap head stainless steel head size, "U" type ring and ￠ 12000mm valve within the melon head; two , spinning ∮800-∮8600mm, 40mm thickness within a variety of head; three, cones, slanted cone transition section and extra thick plate presses; Fourth, ∮400-∮4500mm expansion joint production of various types of production ; Fifth, metals, nonferrous metals, non-standard equipment, chemical equipment manufacturing and metal structures such as heat treatment. Visit, study! Wholesale stainless steel head manufacturers, stainless steel head, Hebei Kwong Lam tube by tube Ltd. Hebei Kwong Lam. Hebei Kwong Lam Tube Co., Ltd. (www.ahgdsb.com/) strong, credible, Hebei Cangzhou flange industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Hebei Kwong Lam fittings into the brilliant and you work for a better future!