Directly buried insulated pipes (Manager Wang
) are divided into two types: conventional steel and steel-clad steel. Since the technical requirements of steel-clad steel are of high quality, installation and construction are relatively difficult
Plastic-clad steel pipes The welding of the joints is done on the ground, and then the pipes are placed in the trench. Generally, a welding well must be dug at the welding joint for the welder to weld under the interface, that is, overhead welding. This can greatly improve the welding quality and efficiency. After completion, it is time to patch the gap. Generally, the patching jacket leather is wrapped around the gap, and the joint is bonded with heat shrink tape, and then the black and white material is poured in.
The workload of patching the steel sleeve is relatively large, because the steel sleeve is used to carry steam, so the pressure is relatively high. The quality of the welding of the inner pipe must be controlled to ensure that each For flaw detection in Hankou, the inner pipe is welded and the corresponding insulation material is placed in the middle. Because the outer pipe is also a steel pipe, the external anti-corrosion after welding the outer pipe is extremely important. The external anti-corrosion is generally epoxy coal pitch glass fiber cloth anti-corrosion. Compared with steel sleeve steel, the technical requirements for patching are higher.
Steel sheathed steel direct buried insulated steel pipe price