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Commonly used heat treatment methods for straight seam steel pipes in industrial projects
The layout and design of technical molds should be reasonable, with minimal thickness and symmetrical shape. For molds with large deformation, deformation rules should be followed, and machining allowances should be provided. For delicate and complex molds, preheating, aging, tempering, and nitri...Read more -
What causes stainless steel pipes to turn black, and what should be done
First, there are several possible causes for stainless steel pipes to turn black: 1. Oxidation: When stainless steel pipes are exposed to air for extended periods, they react with oxygen, forming an oxide film. If the oxide film is uneven or contaminated, black spots or marks will appear on the s...Read more -
About the Characteristics and Applications of the DN225 Steel Pipe
DN225 steel pipe is a common steel pipe specification with a diameter of 225 mm and a wall thickness of 6 mm. It is commonly used in industrial, municipal, and construction applications, such as water supply and drainage pipes, oil and gas pipelines, and bridge support structures. First, Characte...Read more -
Rapid Cooling Methods for 316L Stainless Steel Pipe Welds
316L stainless steel pipe is widely used in numerous industrial fields due to its excellent corrosion resistance, high-temperature strength, and oxidation resistance. However, this material faces several challenges during welding, one of which is slow weld cooling. 316L stainless steel pipe has r...Read more -
How should the weld seams of industrial steel pipes be rust-proofed after welding
Welding is a common method of connecting steel pipes during industrial construction. However, after welding, the weld seams of steel pipes are prone to rust, affecting the quality and safety of the steel structure. So, how can steel pipes be rust-proofed after welding? The following introduces se...Read more -
Analysis of the Chemical Composition, Mechanical Properties, and Applications of 20G Seamless High-Pressure Boiler Steel Tubes
First, the chemical composition of 20G seamless steel tubes: Carbon: 0.17%-0.24% (variable, increased to 0.17%-0.23%) Silicon: 0.17%-0.37% Manganese: 0.35%-0.65% Phosphorus and Sulfur: ≤0.030% each (some requirements are more stringent, P ≤0.025%, S ≤0.020%) Chromium, Nickel, and Copper: ≤0.25% e...Read more