Large diameter welded steel pipe production processLarge diameter welded steel pipe production process mainly adopts cold forming process (JCOE), which is a gradual forming method of steel plate, so that the steel plate is formed into the required bending degree under the standard die of the upper p

What inherent defects may exist in the raw material of welded pipeMainly include delamination, non-metallic inclusions, segregation, bubbles, gas content, and poor metallographic structure, etc.68 How does stratification come about? What is the impact on the quality of steel pipes?The delamination i

Xi'an News, on the 31st, construction steel products in Xi'an market maintained stable operation, terminal demand increased, and overall transactions were acceptable.As of press time, the leading steel mills in the Xi'an market are quoting 3,900 yuan/ton for large threads, 3,890 yuan/ton for high-sp

The quality of the steel pipe is not only related to its service life, but also related to its use efficiency. Then when we are buying steel pipes, we can roughly distinguish the quality of the steel pipes by the appearance of the steel pipes. If the surface of the steel pipes has numbness and is no

Before installing the steel pipe, the trench needs to be dug, and the soil dug after the trench has a reasonable stacking place, the excavated earth should be transported to the outside in time, and should not be too close to the trench, there must be two The distance above the meter, so as not to a