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Hot dip process
Hot dip process Workpiece → degreasing → washing → pickling → washing → dip test help plated solvent → drying Preheat galvanized → finishing → hot dip → cooling → rinsing → drying →inspection Hot-dip galvanizing layer formation process Hot-dip galvanizing layer formation process is a proce...Read more -
High strength structural steel plate of cold forming performance
Inadequacies of high-strength steel structure is thermoformed and post-weld heat treatment temperature determination are limited material softening problem. Therefore, in practical applications in order to avoid affecting the thermoforming process on the mechanical properties of the material, the...Read more -
Casing tube
Heat treatment technology of oil casing Oil casing is a pipeline used for transportation oil or other raw materials, which has a good performance in use, users get the praise and love. Heating of the oil casing need to follow a certain temperature production, use of different temperature control ...Read more -
LSAW Pipe Welding Quality Control Measures
Large Diameter LSAW pipe wall thickness with its big, good material, process stability, becoming the first choice for large domestic and foreign oil and gas pipe project. In the large-straight seam submerged arc welded pipe welded joints, weld and heat affected zone is most likely to produce a va...Read more -
ISO MANUAL for LSAW steel pipe
Quality management system for LSAW steel pipe 4.1General requirement Our company shall establish, implement and maintain a QMS and continually improve its effectiveness in accordance with API spec Q1 7th edition and ISO 9001-2000 standards, to control processes and provide the satisfied product a...Read more -
Fluid pipes
Fluid pipes is a hollow cross section, no welded joint from start to finish. Steel tube with a hollow cross-section, for a large number of pipe conveying fluid pipeline to transport oil, natural gas, coal gas, water and some solid materials. Compared to solid steel such as steel pipes and round s...Read more -
Ferritic stainless wrinkle control
Place in the strip rolling direction, wrinkling is ferritic stainless steel in the molding process should Variable A surface defect is easy to produce larger Indicates a narrow stripe projection, namely the surface wrinkles. It can reduce the wrinkling by controlling the production process: incre...Read more -
Oil spiral welded pipe
Oil spiral welded pipe does not belong to the general metallurgical products, but in the seamless pipe, bars or plates on the basis of after deep processing (pressure processing, welding, machining, heat treatment, surface treatment, etc.), actually belong to mechanical product areas. In order to...Read more -
LSAW and galvanized steel pipe welding process
In pipeline construction, oil pipeline and gas pipeline is transported toward the large diameter high pressure and the development of submarine pipeline thick direction more and more pipelines require the use of LSAW steel pipe. With the introduction of of several large-seam submerged arc welded ...Read more -
Large diameter square tube defects
Many large diameter square tube defects are caused by the perforation in square and rectangular tube, so the mass production of large diameter power process is the key process square tube. Perforation main difficulty lies in the low alloy high performance perforation, when necessary in order to e...Read more -
How to prevent heat deformation of straight seam steel pipe problem
How to prevent heat deformation of straight seam steel pipe problem Fine messy mold deformation reason is often messy, but we need to grasp its variation rules, analyze the reasons of its occurrence, the choice of a strange approach to prevent deformation of the mold can be cut, but also can be m...Read more -
High Pressure Steel Pipe
High-pressure steel pipe manufacturing methods are divided into hot-rolled (extrusion, expansion) and cold drawn (rolled) two kinds. Among them, the hot-rolled (extrusion, expansion) OD pipe is 22 ~ 530mm, wall thickness in the range of 2.0 ~ 70mm; cold drawn (rolled) pipe diameter ranges from 10...Read more