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Weld Appearance Requirements of Pressure Pipe
Before the pressure pipeline nondestructive testing, visual inspection of welds shall comply with the requirements. Pressure pipe weld appearance and surface quality of welded joints general requirements are as follows: welding should look good shape, width of each side groove edge 2mm overshadow...Read more -
Quenching Method of Steel Pipe Deformation and Crack
Austempering is to reduce the deformation of steel pipe and an effective method of quenching crack Jian, but how to properly use the process method should be based on reasonable seamless steel pipe material, size, hardness and toughness, deformation requirements, and specific working conditions t...Read more -
Galvanized Method of Seamless Steel Pipe
To meet the various requirements of the premise of increasing the use of progress, extend the life of galvanized steel, zinc coating materials are evolving. Major new coatings are: (1) A zinc-iron alloy coating. That galvanized steel after heat treatment. Such as the diffusion annealing at 500 ~ ...Read more -
How to Solve Bubble Problem of Precision Light Pipe
Heat strengthened, high impact toughness, may not be sensitive to lack. Excellent thermoplastic, high speed extrusion into a complex structure, thin-walled, hollow profiles of various, or forgings forged into complex structures. Quenching temperature range, low quench sensitivity, after extrusion...Read more -
Quality Inspection Mode of High Alloy Pipe
1. Leveling milling: After the steel sheet leveling machine anvil original curved, then through the edge milling machine for milling steel two-sided margin, so as to meet the needs of the plate width, plate edge parallelism and groove shape. 2. Cut molding: in-line along the outer edge of the pla...Read more -
Advantages and Disadvantages of Various Anti-corrosion Materials
Petroleum asphalt, raw materials wide, low prices. However, poor working conditions, difficult to guarantee quality, serious environmental pollution. Coal tar epoxy, easy to operate, but a long time covering layer is cured by environmental impact, suitable for field work, the following 10 ℃ diffi...Read more