The spiral steel pipe is drilled in rotation and begins to enter the soft formation. Under the action of the tritone, the drill bit first produces elastic shear deformation of the formation and then is removed under the pressure of the tritone. In the simulated environment, the soft soil is homogene

Horizontal fixed welding of thick-walled stainless steel pipes:Stainless steel pipe is a hollow long strip of steel, which is widely used as a pipeline for transporting fluids, such as oil, natural gas, water, gas, steam, etc. Stainless steel pipes are lighter in weight when they have the same bendi

Submerged arc steel pipe welding control measures:Submerged arc steel pipe has become the steel pipe for large-scale oil and gas transmission projects at home and abroad because of its large wall thickness, good material, and stable processing technology. In large-diameter submerged arc steel pipe w

Matters needing attention in the use of thick-walled steel pipes:How much wall thickness can be called thick-walled steel pipe? This is a bit doubtful. It depends on the ratio of the outer diameter of the steel pipe to the wall thickness of the steel pipe. For example, a steel pipe with a diameter o

Improper heat treatment of seamless steel pipes is likely to cause a series of production problems, resulting in greatly reduced product quality and turning into waste products. Avoiding mistakes that are easy to make during heat treatment is saving money. What problems should we pay attention to an

It is inevitable to weld and cut the spiral steel pipe structure in the application of spiral steel pipe. Due to the characteristics of the spiral steel pipe itself, compared with ordinary carbon steel, the welding and cutting of the spiral steel pipe have their particularity, and it is easier to pr

Large-diameter straight seam submerged arc steel pipes are mainly responsible for the pipeline transportation of marine and land oil and gas, oil and natural gas, coal, and ore pulp.The methods and characteristics of international pipe-making technology, the forming methods of large-diameter longitu

Thick-walled steel pipes have a wide variety of steel types and specifications, and their performance requirements are also various. All of these should be differentiated as user requirements or working conditions change. Generally, steel pipe products are classified according to cross-sectional sha

Spiral steel pipe requires surface treatment to increase durability:1. Use solvents and emulsions to clean the surface of the anti-corrosion spiral tube, which can remove the organic matter on the surface of the spiral tube, but it cannot remove the surface rust, scale, welding flux, etc., so cleani

1. Wrong side.This is a common problem in pre-welding, and the wrong side is out of tolerance, which directly leads to the degradation or scrapping of the steel pipe. Therefore, it is required to strictly control the misalignment amount during pre-welding. When the whole or more than half of the ste