Industry News
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How to deal with the sealing method of flange leakage
First. Leakage location and condition The connecting flange bolts on both sides of the DN150 valve body leak. Since the flange connection gap is extremely small, it is impossible to inject sealant through the gap to eliminate the leakage. The leakage medium is steam, the tempe...Read more -
Introduction to the quality process and characteristic uses of large-diameter steel flanges
Large-diameter steel flange is a kind of steel flange, which is widely used and promoted in the machinery industry and has been well received and favored by users. Large-diameter steel flanges are widely used, and the range of use is determined according to different character...Read more -
How many usages of stainless steel pipe fittings
Stainless steel pipe is a hollow long round steel, mainly widely used in petroleum, chemical, medical, food, light industry, mechanical instruments, and other industrial pipelines and mechanical structural components. In addition, when the bending and torsional strength are th...Read more -
Spiral steel pipe production process introduction and classification standards
Spiral steel pipe production process: It is a spiral seam steel pipe made of strip steel coil as raw material, extruded at regular temperature, and welded by automatic double-wire double-sided submerged arc welding process. (1) Raw materials are strip steel coils, welding wire...Read more -
Geometric Properties of Sections of Large Diameter Steel Pipes
(1) Its node connection is suitable for direct welding, which does not need to pass through the gusset plate or other connectors, which saves labor and materials. (2) When necessary, concrete can also be poured into the tube to form a composite member. (3) The geometric charac...Read more -
How to judge the quality of spiral steel pipes
1. From the surface of the spiral steel pipe to see whether the production process of the spiral steel pipe is exquisite. Generally, research and analysis of spiral steel are required, and the section of fake and inferior spiral steel pipes is oval. The reason is that the manu...Read more -
The difference between hot-rolled seamless steel pipe and cold-rolled seamless steel pipe
In terms of processing technology: hot rolling is hot processing, and cold drawing is cold processing. Hot rolling is rolling above the recrystallization temperature, and cold rolling is rolling below the recrystallization temperature; Distinguish from the appearance: the surf...Read more -
Execution standard of spiral welded steel pipes
Spiral seam submerged arc welded steel pipe SY5036-83 for pressurized fluid transportation is mainly used for oil and natural gas pipelines; spiral seam high frequency welded steel pipe SY5038-83 for pressurized fluid transportation is welded by high-frequency lap welding. Spi...Read more -
Why non-metallic pipes or stainless steel pipes cannot be used as long-distance pipelines
The transportation of oil and gas through pipelines requires a certain pressure. The longer the pipeline, the higher the pressure required for oil and gas transportation. The pressure of long-distance pipelines is generally between a few MPa and more than ten MPa. Therefore, t...Read more