Maintenance and Replacement of Mild Steel Tube As Water Pipeline

What is mild steel tube?

Mild steel tube is made of carbon steel with a carbon content of less than 0.25%. Low carbon steel is a type of carbon steel with a very low carbon content. The weight is about 0.16–0.29%. This steel is cheap and most commonly used. It is ductile and forgeable, but has low tensile strength. Low carbon cannot be hardened by heat treatment.

Rust of mild steel tube

Mild steel tube is prone to rust problems when exposed to environmental factors such as water and air. The main reason is that the protective layer on the surface of the mild steel tube is damaged or falls off, exposing the surface of the mild steel tube directly to the external environment. Coupled with factors such as the chemical composition and manufacturing process of the mild steel tube itself, this makes the iron on the surface of the mild steel tube interact with oxygen and moisture, resulting in the rust of the mild steel tube.

Maintenance and replacement of mild steel tubes as water pipelines

1.Daily inspection and maintenance

Maintenance personnel should be familiar with the water supply system, frequently check the use of water supply pipes, valves and faucets, and pay attention to whether there are abnormal conditions such as leakage, seepage, and water accumulation underground. If leakage is found, it should be repaired in time. For open-air pipes, the anti-corrosion layer and insulation materials may fall off due to sun and rain. Maintenance and repair should be paid attention to at any time to extend the service life of the pipes. ‌

2.Anti-corrosion treatment

The surface of low-carbon steel water pipelines should be coated with an anti-corrosion layer to resist the erosion of chemical substances. During the water delivery process, the pipeline will be exposed to various chemical substances, so it has strong corrosion resistance. ‌However, the anti-corrosion layer may fall off due to sun and rain, and it is necessary to paint it in time to prevent corrosion of the pipeline. ‌

3.Damage repair

The pipeline may be damaged and leaked due to poor operation and management, resulting in serious economic losses. It is of great significance to restore the safe operation of pipelines economically, efficiently and quickly. There are many methods for pipeline repair, including internal and external anti-corrosion repair, hose flip lining technology, etc. Before planning the repair, it is necessary to evaluate the effectiveness, long-term, reliability, safety and cost of different pipeline repair schemes according to the pipeline conditions, so as to determine the most suitable repair scheme.

4.Replacement considerations

When necessary, it may be necessary to replace the water pipeline. When replacing, materials with good corrosion resistance and pressure bearing capacity should be considered, such as q235b spiral steel pipe, which adopts high-frequency welding technology, has strong pressure bearing capacity and corrosion resistance, and is suitable for various water supply projects.

Precautions

When maintaining and replacing low-carbon steel water pipelines, the following important matters should be noted:

1.Monitoring and testing

Regularly inspect the pipelines, use advanced monitoring equipment to obtain accurate data, and promptly detect and deal with abnormal situations.

2.Preventive maintenance

Develop preventive maintenance measures, including regular cleaning of pipelines, to prevent blockage and corrosion and extend the service life of the pipelines.

3.Emergency repair preparation

Prepare emergency repair plans and necessary materials and tools so that they can respond quickly when pipelines are aging, damaged or leaking.

4.Construction safety

During the construction process, safety operating procedures should be followed, fire prevention should be paid attention to, and appropriate protective measures should be taken to avoid mechanical damage to the pipelines.

5.Pipeline maintenance

In the maintenance of pipelines, attention should be paid to the hardness and rigidity of the pipelines to avoid applying inappropriate external forces. At the same time, for pipelines outdoors or exposed to direct sunlight, a protective layer should be wrapped to prevent aging caused by ultraviolet rays.

6.Water quality management

Establish a sound water quality monitoring and management system to ensure the supply of qualified water and ensure the water output meets the standard rate.

7.Maintenance team

Build an experienced operation team to ensure that the management and technical strength of the site, as well as the processing systems and facilities and equipment are in good operating condition.

8.Crisis management

Develop a crisis management plan to quickly respond to and solve problems in emergency situations such as natural disasters or man-made accidents.

9.Welding and connection

When connecting pipelines, the appropriate welding method should be selected according to the pipe diameter and wall thickness, and the welding quality should be ensured to avoid welding defects.

10.Maintenance plan

Develop a scientific, reasonable and highly operational maintenance plan, provide management, technology and other aspects of support, and send experienced operators to implement it.

Through these measures, the level of pipeline operation and maintenance can be improved, the stability of the project operation environment can be ensured, and the service life of the pipeline can be extended.