After a series of treatments such as forming, welding, and cooling, the spiral steel pipe still needs to be sawed. In this link, the length of the technical spare ruler directly affects the quality and sales of the finished welded pipe, so the length of the spare ruler should be controlled between (

Steel elbow: the most commonly used is the seamless steel elbow, which is divided into a long-radius elbow and a short-radius elbow. Among them, the long-radius elbow is the most commonly used, and its application is also very extensive.Steel elbows are distinguished according to specifications: sma

1. It completely solves the problem of mutual friction between the closed surfaces of traditional connecting steel pipes and affects the sealing; the flow resistance is small, and the resistance coefficient of the stainless steel tee is equal to that of the steel pipe section of the same length;2. T

The resistance of the fluid is responsible for the energy loss (ie drag loss). One is the resistance loss along the way caused by the viscosity and inertia of the fluid; the other is the local resistance caused by the blockage and disturbance of the solid wall to the fluid due to the sudden expansio

1) Thin-walled stainless steel pipes and fittings should not be in direct contact with cement, cement mortar, or concrete. When the pipeline is laid in the dark, anti-corrosion tape should be wrapped on the outer wall of the pipe or a plastic-coated thin-walled stainless steel pipe should be used.2)

The transportation of oil and gas through pipelines requires a certain pressure. The longer the pipeline, the higher the pressure required for oil and gas transportation. The pressure of long-distance pipelines is generally between a few MPa and more than ten MPa. Therefore, the pipeline must have S

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