Test Results of Large-diameter Thin-walled Duplex Stainless Steel Seamless Pipes
- Oct 31, 2023
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Duplex stainless steel has gradually become the preferred material for seawater pipeline systems in nuclear power plants because its corrosion resistance to seawater is better than austenitic stainless...
Development of Large-diameter Thin-walled Duplex Stainless Steel Seamless Pipes
- Oct 10, 2023
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Thermoplasticity of duplex stainless steel is poor due to the different deformation behaviors of the austenite phase and the ferrite phase. The stress and strain distribution between the two phases during...
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...
Improvement in Tungsten in Argon-arc Welding of Carbon Steel Pipes
- Nov 14, 2023
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2. Rectification of construction Through the close cooperation and analysis of welding technicians, flaw detection personnel in the workshop and quality department, it was finally determined that the...
Analysis of Tungsten in Argon-arc Welding of Carbon Steel Pipes
- Aug 14, 2023
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Abstract: Aiming at the problem of tungsten inclusion during the prefabrication of carbon steel pipes for asphalt tankers and chemical tankers, the argon arc welding process was improved. Firstly, check...
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...
Post-Weld Heat Treatment for Carbon Steel Pipes
- Oct 28, 2024
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3. Requirements for Post-Weld Heat Treatment 3.1 Purpose The combination of steel hardenability, diffusible hydrogen content in the deposited metal, and the stress state of the weld joint can lead...
Post-Weld Heat Treatment Requirements for Carbon Steel Pipes
- Oct 23, 2024
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Abstract: Carbon steel is a type of steel that exhibits good weldability. If appropriate welding materials and processes are selected, the welded joints are unlikely to develop hardened structures...
Choosing Blanks for Extra-Large-Diameter Hot-Rolled Seamless Pipes
- Oct 19, 2024
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3.1 Selection of Extra-Large-Diameter Thin-Walled Hot-Rolled Seamless Steel Pipe Blanks 3.1.1 Blank Selection for Pipe Expansion Process First, the wall thickness of the blank pipe is calculated based...