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Protection method for back side of weld seam of argon arc welding of stainless steel pipeline
1. The tube is filled with argon for protection For argon arc welding of stainless steel pipes in petrochemical plant engineering, the method of filling the pipe with argon is generally used to prevent oxidation on the back of the weld. The argon filling methods mainly include argon filling as a ...Read more -
Introduction to Embroidery Removal Technology of Submerged Arc Steel Pipe
1. Cleaning Use solvents and emulsions to clean the surface of the steel to remove oil, grease, dust, smoothing agent, and similar organic matter, but it cannot remove the rust, oxide scale, welding flux, etc. on the surface of the steel, so it is only used as an auxiliary in the defense homework...Read more -
Process characteristics of spiral steel pipe
Spiral steel pipes are mainly used in water supply engineering, petrochemical industry, chemical industry, electric power industry, agricultural irrigation, and urban construction. It is one of the 20 key products developed in my country. For liquid transportation: water supply and drainage. For ...Read more -
Analysis of accidents prone to occur on the heating surface of boiler steel tubes
1. Long-term over-temperature burst tube Over-temperature refers to metal materials operating at temperatures exceeding the rated temperature. The rated temperature refers to the allowable maximum temperature of the steel during the design life, and can also refer to the rated temperature during ...Read more -
Acceptance standards and methods for spiral steel pipes
1. Acceptance principles for spiral steel pipes The quality inspection and acceptance of spiral welded pipes shall be carried out by the supplier’s technical quality supervision department. The supplier must ensure that the delivered spiral welded pipes comply with the requirements of the c...Read more -
Classification and application fields of steel tees
Steel pipe fittings are also called steel tee fittings or tee fittings. The main pipe adopts a steel tee joint. It has three openings, namely one import and two exports; or two imports and one export. It is a chemical pipeline fitting. It has T-shape, Y-shape, equal-diameter pipe holes, and reduc...Read more -
How should thick-walled steel pipes be stacked
1. Angle steel and channel steel should be stacked in the open air, that is, the mouth should be facing down. I-beams should be placed upright, and the I-beam surface of the steel should not be facing up to avoid water accumulation and rust. 2. Corresponding passages should be left between stacks...Read more -
Steel pipe defects and surface problems
1. Quenching cracks in steel pipes The quenching heating temperature of the steel pipe is too high, the heating time is too long, or the heating temperature is seriously uneven, which may easily cause quenching cracks. If the chemical composition of the steel pipe segregates, inclusions in the st...Read more -
Processing technology of straight seam steel pipe
In the production process of straight seam steel pipe, the processing method will have a lot of impact on it. So what are the processing methods for straight seam steel pipes? The staff of the manufacturer will introduce to you the main methods. Using the repeated impact of the forging hammer, th...Read more -
What is the difference between a welded steel pipe and a welded spiral steel pipe
Welded steel pipe refers to a steel pipe with seams on the surface, which is made by bending and deforming steel strips or steel plates into circular, square, and other shapes and then welding them. The blank used for welded steel pipes is a steel plate or strip. Since the 1930s, with the rapid d...Read more -
Application of stainless steel pipes in fire piping systems
Fire piping includes two systems: a fire hydrant system and a water sprinkler system. A stainless steel fire piping system is a widely used fixed fire protection facility in China. Nowadays, 304 stainless steel pipes are used in fire water supply pipes in sprinkler systems. As we all know, the se...Read more -
Inspection methods for large diameter straight seam welded steel pipes
There are many methods for quality inspection of large-diameter straight seam welded steel pipes, among which physical methods are also commonly used. Physical inspection is a method that uses some physical phenomena to measure or inspect. The inspection of internal defects in materials or large-...Read more
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