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Galvanized pipe
Galvanized pipe manufaturing process Galvanized pipe sulfate electro-galvanized the ferroalloy process is the production trough perforation direct solution to bring out or overflow. Various production process from the circulatory system, the slot solution, alkali solution, plating solution, a lig...Read more -
Extruded steel pipe
Extruded steel pipe is produced by cold extrusion, hot extrusion, warm extrusion process. Hot extrusion is widely used in the production of aluminum, copper and other nonferrous metal pipes and profiles. Hot extrusion of steel for the production of both special pipes and profiles, it is difficult...Read more -
Do You Know How to Paint Carbon Steel Pipes?
Carbon steel pipes consist of an iron and carbon alloy that is able to be bent into shapes during manufacture without reducing its high tensile strength. So as black steel pipe, many people use black steel pipe now. It is vital to defend the metal surface location from corrosion credited to the m...Read more -
The difference between the steel tubes
Difference between ssaw steel pipe and lsaw steel pipe Metallurgical properties of raw materials Straight seam submerged arc welding tube is made of steel, but spiral submerged arc welding steel pipe production is usd hot rolled steel coil strip. The hot strip rolling process with a series of adv...Read more -
Deviation wall thickness of seamless steel pipe
In recent years, the proportion of seamless steel pipe in China’s steel production is growing, including seamless steel pipe wall thickness deviation is the importance of the quality one of the indicators due to its wide use and the higher its quality requirements. The thickness deviation d...Read more -
Large-diameter oil pipeline stress corrosion causes and preventive measures
Stress corrosion Cause Large diameter oil pipeline stress corrosion cracking is a lag time-related damage, this hydrogen delayed cracking completely similar. Stress corrosion cracking (SCC) is a low-stress brittle fracture. Q345B spiral steel stress corrosion can occur only in specific circumstan...Read more -
International Tender for ERW steel pipe
SUB: - International Tender for group; (A) ERW Line pipe 10’’ -24’’, GROUP- (B) ERWLINE PIPE 2’’-8’’, GROUP (F) Seamless line pipe 1’’-16’’ SUNDARBAN GAS COLTD, Khulna, will purchase ERW LINE PIPE & SEAMLESS LINE PIPE THROUGH International tender. Sunderban gas co ltd wants to make sure that ...Read more -
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