1. First of all, ensure that the water quality meets the standards, and strictly monitor and manage the water quality. Implement cleaning and separate injection, strengthen the cleaning of main water pipelines, ensure that the water quality in the station and the bottom of the well reach the standar

The steel pipe blank is corroded too badly, and a thick iron oxide layer appears on the surface. Because the elements in the steel matrix are not necessarily uniform, some places are rusted deeply, and some places are rusted shallowly, and unevenness appears after pickling. Large uneven pits, such a

Square steel pipes and rectangular steel pipes are the parts of the steel hollow section. These steel pipes with equal and unequal side lengths. It is rolled from strip steel after process treatment. Generally, strip steel is unpacked, leveled, curled, welded to form a round tube, rolled into a squa

Longitudinal seam steel pipe welded steel pipe is heated and physically deformed. If a straight seam welded steel is welded, the data size can be reduced to a large extent. The demand for the straight seam steel pipe project is high, and the external seam welding starts to ensure the penetration of