Test Results of Automatic Argon Arc Welding Processes for Carbon Steel Pipes
- Jul 14, 2022
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1. NDT According to the requirements of ASME BPV Ⅸ-2015 standard, the appearance, ultrasonic and magnetic particle inspection were carried out after welding, and the results were all qualified. The appearance...
Test Methods for Fully Automatic Argon Arc Welding of Carbon Steel Pipes
- Jun 29, 2022
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At present, the welding of carbon steel pipes with small diameters mainly adopts manual argon arc welding processes. In engineering projects, such pipelines have the characteristics of small diameters,...
Defects Caused by Heating and Their Prevention
- Jun 17, 2022
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The uniform temperature of the pierced billet after rolling by the pipe mill generally cannot be guaranteed, and it is difficult to meet the requirements of the final rolling temperature of the pierced...
Defects Caused by Heating the Tube Blank
- May 24, 2022
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The production of hot-rolled seamless steel pipes generally requires two heating processes from the billet to the finished steel pipe, that is, the heating before the piercing of the billet and the pierced...
Pickling and Passivation of Stainless Steel Pipelines (Part Two)
- May 13, 2022
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4. Pickling and passivation of stainless steel pipelines 4.1 Requirements for pickling passivation By pickling, the oxide scale formed by high-temperature operations such as heat treatment and welding...
Defects of Seamless Steel Tubes and Their Prevention (Part Two)
- Apr 21, 2022
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Pits and grooves of tube blanks The reasons for the pits and grooves in the tube blank: on the one hand, they may be caused by the crystallization process of the casting blank, which is related...
Defects of Seamless Steel Tubes and Their Prevention (Part One)
- Apr 15, 2022
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1. Defects and prevention of tube blanks The tube blanks used in the production of seamless steel tubes can be continuous casting round tube blanks, rolling (forging) round tube blanks, centrifugal...
An Introduction to Pipes
- Mar 31, 2022
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Tubes are hollow and have circular cross-sections, which are used for conveying media such as fluids, particles, powders and others. The term Pipe is different from tube, because...
Pickling and Passivation of Stainless Steel Pipelines (Part One)
- Mar 03, 2022
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Abstract: Stainless steel pipelines in LNG projects will inevitably be damaged during transportation, hoisting or prefabrication welding. In order to repair and protect stainless steel pipelines...
Concentrated Seawater Pipelines
- Feb 24, 2022
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A project saves 13 million cubic meters of fresh water, 600,000 tons of raw salt, and gains an annual profit of 120 million RMB, effectively solving the problem of shortage of raw salt...
Crevice Corrosion on Flange Surfaces of Seawater Pipelines in Nuclear Power Plants
- Feb 07, 2022
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Abstract: During the first corrosion inspection of a nuclear power plant, it was found that corrosion occurred on several flange surfaces of seawater pipelines. The structural characteristics of...
Selecting Materials for Chemical Pipelines
- Jan 24, 2022
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Choosing materials for chemical pipelines (1) The selection basis for materials used for chemical pipelines In the process of chemical design, the corrosion resistance of the...