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Storage of seamless steel pipes
1) The storage site or warehouse of steel should be in a clean place with unobstructed drainage, far away from factories and mines that produce harmful gases or dust. Weeds and all debris should be removed on the field, and the steel should be kept clean; 2) Do not stack with acid, alkali, salt, ...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 -
Internal anti-corrosion treatment method for large diameter spiral steel pipe
The construction of cement mortar fabric should usually be carried out after the spiral steel pipe has been laid, the pressure test has passed, and the covering soil has been compacted according to the planning requirements. Due to the small stiffness and thin wall of the steel pipe, the pipe mus...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 -
Thin-walled stainless steel pipe construction and installation
1) Thin-walled stainless steel pipes and fittings should not be in direct contact with cement, cement mortar, and concrete. When the pipeline is concealed, anti-corrosion tape should be wrapped around the outer wall of the pipe or plastic-coated thin-walled stainless steel pipe should be used. 2)...Read more -
Why steel pipes need to be heat treated
The function of heat treatment is to improve the material mechanical properties of steel pipes and precision steel pipes, eliminate residual stress and improve the cutting performance of steel pipe metal. According to the different purposes of heat treatment, heat treatment processes can be divid...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 -
Comparison of the advantages and disadvantages of spiral steel pipe and straight steel pipe welds
The weld seam of spiral steel pipe is longer than that of straight seam steel pipe. If the pipe length is L, the weld seam length is L/cos(θ). Most of the defects in steel pipes are concentrated in the welds and heat-affected zones. Long welds mean a high probability of defects. This is the main ...Read more
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