Cement mortar anti-corrosion steel pipe

Cement mortar anti-corrosion steel pipe

The cement mortar anti-corrosion steel pipe is filled with concrete, which can absorb a large amount of heat energy. Therefore, the distribution of the temperature field of the pipe column section is very uneven when it is exposed to fire, which increases the fire resistance time of the column, slows down the heating rate of the steel column, and once the steel column yields , the concrete can bear most of the axial loads and prevent the structure from collapsing. The fire resistance of composite beams is also increased because the temperature of the steel beams is reduced by transferring heat from the top flange to the concrete. The experimental statistics show that the fireproof coating can be saved by 1/3 to 2/3 or even more when the fire resistance requirement of 3 hours is achieved.

The grades of cement mortar anti-corrosion steel pipe mortar are M3, M5, M7.5, M10, M12.5, M15, M20, M25, M30, M40. Mortar is divided into masonry, plastering and jointing according to its purpose, which has nothing to do with the label. After the cement mortar work is completed, there is an important process, that is, air drying. It means air-drying for 2-3 days in a natural state. The main purpose is to prevent the cement mortar from cracking due to bumps during shipment.

The performance of steel components under the action of external force still has a certain influence. For example, it may have adverse effects on deformation, stability, and fatigue resistance. Hot-rolled steel products are difficult to control in terms of thickness and side width. We are familiar with thermal expansion and cold contraction. Because even if the length and thickness are up to standard at the beginning of hot rolling, there will still be a certain negative difference after cooling. The wider the side width of this negative difference, the thicker the thickness, the more obvious the performance. Therefore, for large steel, the edge width, thickness, length, angle, and edge of the steel cannot be too precise.

Cement mortar anti-corrosion steel pipe internal anti-corrosion
1. Three-layer polyethylene (3PE) steel pipe for oil and gas is anti-corrosion, and two-layer polyethylene (2PE) steel pipe is anti-corrosion.
2. FBE (single-layer sintered epoxy powder anti-corrosion) steel pipe and 2FBE (double-layer sintered epoxy powder anti-corrosion) steel pipe for oil and gas.
3. The water supply pipeline IPN8710 macromolecule non-toxic coating steel pipe is anti-corrosion.
4. High-density polyethylene polyurethane foam insulation steel pipe.
5. The water supply pipeline is lined with cement mortar to prevent corrosion inside the steel pipe.
6. Anti-corrosion of epoxy coal tar fiberglass cloth steel pipe.
The main application of cement mortar anti-corrosion steel pipe:
1. Cement mortar lined anti-corrosion steel pipe is used for: Municipal engineering: suitable for high-rise building water supply, heating network heating, tap water engineering, gas transmission, buried water transmission and other pipelines.
2. Petroleum: process pipelines for transporting corrosive media in petroleum pipelines, chemical pharmaceuticals, printing and dyeing and other industries.
3. Sewage treatment: sewage treatment discharge pipes, sewage pipes and anti-corrosion projects of biological pools
4. Agriculture: The corrosion resistance of agricultural irrigation pipes, deep well pipes, drainage pipes and other networks is better than that of steel structures, which is beneficial to the fire resistance and fire protection of steel pipes.