Reasons and advantages of steel welding for large-diameter steel pipes1. The use of large-caliber stainless steel can be divided into oil well pipes (casings, oil pipes, and drill pipes, etc.), line pipes, boiler pipes, mechanical structure pipes, hydraulic prop pipes, gas cylinder pipes, geological
Causes of trachoma in the weld of spiral seam submerged arc welded steel pipeThe spiral steel pipe is made by bending the steel strip in the spiral direction through the coiling machine, and then through the double-sided submerged arc welding of the capacitor. In the production process of spiral ste
Inspection method of high frequency welded pipe1. Chemical composition analysis: chemical analysis method, instrumental analysis method (infrared C—S instrument, direct reading spectrometer, zcP, etc.).A. Infrared C-S instrument: Analyze the C and S elements in ferroalloys, steel-making raw material
Pre-treatment and use of straight seam steel pipePre-treatment of straight seam steel pipe:Non-destructive inspection of the inside of the weld. Because the pipeline belongs to the extra-large steel pipe in the water supply project, especially the steel pipe with a thickness of t=30mm is used as a p
How to solve the deformation problem of spiral seam submerged arc welded steel pipeThe spiral seam submerged arc welded steel pipe is drilled in rotation and begins to enter the soft formation. Under the action of the tri-cone, the drill first produces elastic shear deformation of the stratum and th
Development status and prospects of domestic and foreign oil and gas pipelinesAn important driving factor for the development of oil and gas pipelines is the imbalance in the production and demand of oil and gas resources in various regions. Since the development of the oil and gas industry, most co
Overview:ASTM A234 is the standard specification for pipe fittings of wrought carbon steel and alloy steel for moderate and high-temperature service. The Cr-Mo low alloy steel pipe fittings has been separately listed on our website. Carbon steel pipe fittings manufactured to ASMT A234 are usually fu
ASTM A192 boiler tubes are made of grade 192 stainless steel that has undergone numerous test sample hardness tests, flattening tests, flaring tests, flange tests and hydraulic tests. We basically manufacture these ASTM A192 boiler tubes according to the seamless cold drawn process to maintain their
As oil and natural gas resources are often located in remote areas and harsh environments, greater pressure pipelines transporting, complex and corrosive media, and pipeline welding assembly ring general in the wild, which not only requires pipeline steel with high strength, and requirements should
ASTM A210 seamless medium carbon steel pipe is applied for boiler pipe and boiler flue pipe with the minimum thickness, including safety end, vault, supporting pipe and super heater pipe.SpecificationHot rolledOutside Diameter , mmTolerance, %OD≤101.6, WT≤2.4+40/-0OD≤101.6, 2.4＜WT≤3.8+35/-0OD≤101.6,
