1: Flange connection:Generally, the flange connection speed is fast, the construction is convenient, and the tools are simple, but in terms of safety and sealing, it cannot meet most engineering requirements. Generally, pipes with low pressure and frequently used pipes are suitable for this connecti
1. Thermomechanical treatmentHigh-temperature thermomechanical treatment can improve the yield ratio and elastic limit of the spiral steel pipe. Improve the comprehensive mechanical properties, fatigue properties, and stress relaxation properties of spiral steel pipes. Reducing the ductile-brittle t
1. Straight seam steel pipes should be submitted for acceptance in batches, and the batching rules should comply with the provisions of the corresponding product standards.2. The inspection items, sampling quantities, sampling locations, and test methods of straight seam steel pipes shall be by the
Thick-walled welded pipe is a kind of precipitation-strengthened nickel-based superalloy that is difficult to deform. It is similar in composition to the former Soviet Union's ЭИ929 alloy. The solid solution strengthening of alloy elements and the precipitation strengthening of γ' phase are very hig
1.316 stainless steel is a molybdenum-containing stainless steel. Due to the molybdenum in the steel, the overall performance of this steel is better than that of 310 and 304 stainless steel. Under high temperature conditions, when the concentration of sulfuric acid is lower than 15% and higher than
In our daily life, we will use many water pipes, and the spiral steel pipe is one of them. What should we do if the spiral steel pipe is blocked when we use it? When the pipe is blocked, it will not only affect us It will also have a corrosive effect on some raw materials inside the pipeline. Theref
The finished product of seamless steel pipe precision steel pipe will have the problem of uneven thickness or eccentricity, but how does it happen? Many people don't understand. Today, let's talk about how the eccentricity of seamless steel pipes such as cold-drawn steel pipes, cold-rolled steel pip
The fire pipeline includes two systems: a fire hydrant system and a water sprinkler system.The stainless steel fire-fighting piping system is a fixed fire-fighting facility widely used in China. Nowadays, the fire water supply pipes in the water sprinkler system use 304 stainless steel pipes. As we
The inner and outer surfaces of the large-diameter welded pipe of the spiral seam submerged arc welded pipe should be bright, and there should be no residual acid and oxide scale. Surface defects should be removed by grinding, the grinding place should have a smooth transition with the base material
