Rigid Waterproof Casing Pipe VS General Steel Casing Pipe

In pipeline protection projects, rigid waterproof casing pipe and general steel casing pipe are both common choices, but they are by no means interchangeable! Choosing the wrong type can waste costs at best, or lead to serious problems such as leakage and corrosion. Although both are pipeline protection materials, there are significant differences in performance, use, installation requirements and price. This article will explore the differences between the two casing pipes from multiple dimensions to help you make an informed decision when choosing.

Definition and structural differences

Rigid waterproof casing pipe

Waterproofing is its core mission. It is specially equipped with a sturdy wing ring (annular sleeve made of steel plate) on the outside of the steel pipe, supplemented by sealing and filling materials such as oil hemp and asbestos cement. This dual structural design (steel pipe + wing ring + sealing filling) is specifically designed to ensure that the pipeline is leak-proof when passing through the wall (such as the basement, pool wall), while providing stable support.

General steel casing pipe

The core function is physical protection and support. The structure is relatively simple, mainly composed of a seamless steel pipe, and sometimes the surface is treated with anti-corrosion (such as spraying, coating). It does not have a special waterproof structure, and mainly relies on the strength and stability of the steel pipe itself to resist external impact and wear.

Performance difference

Rigid waterproof casing pipe

1. Rigid waterproof casing pipe has excellent waterproof performance and stability due to its special structure and material selection. It can effectively prevent moisture from penetrating from the wall into the inside of the pipeline, thereby protecting the pipeline from corrosion and damage.

2. Rigid waterproof casing pipe also has certain seismic resistance, which can reduce the impact of earthquakes on the pipeline system to a certain extent.

3. This kind of casing pipe has a long service life, good stability and aging resistance, and can maintain long-term stable performance under normal working temperature and pressure conditions.

General steel casing pipe

1. General steel casing pipe is made of high-end steel (mild steel pipe, precision tube), with high strength and hardness, and can withstand high-intensity pressure and impact.

2. The outer shell of the general steel casing pipe can be sprayed or coated with anti-corrosion materials to enhance its anti-corrosion performance.

3. The service life of this casing pipe is also relatively long, durable, and has certain maintainability and reusability.

Differences in usage

Rigid waterproof casing pipe

Scenario where waterproofing is a hard indicator! Typical applications include:

1. Pipes through the wall of the basement.

2. The inlet and outlet pipes of the pool and water tank penetrate the wall.

3. Complex environments with strict requirements for waterproofing (such as submarine pipeline interfaces and important underground passages).

General steel casing pipe

Protecting the pipeline from physical damage is the top priority! Widely used in:

1. External protection of oil and natural gas pipelines, such as drill pipes.

2. External protection of water supply, sewage pipes, and boiler tubes.

3. Construction sites, municipal projects, chemical plants, etc., where pipelines need to be protected from external impact, wear, and corrosion.

Differences in installation requirements

Rigid waterproof casing pipe

1. The installation process of rigid waterproof casing pipe is relatively complicated, and it is necessary to ensure the sealing between the casing pipe and the wall.

2. During installation, it is usually necessary to use special sealing materials (such as oil hemp, asbestos cement, etc.) for filling, and reserve appropriate space on the wall for installation and commissioning.

3. The casing pipe also needs to be treated with anti-corrosion to increase its service life.

4. Since the structure of the rigid waterproof casing pipe is relatively complex, a high level of technology and experience is required for installation.

General steel casing pipe

1. The installation of general steel casing pipe is relatively simple. It does not need to consider waterproof performance, so the casing pipe can be directly fixed on the wall and connected to the pipeline with appropriate connectors.

2. The installation process of general steel casing pipe is relatively quick and convenient, and the requirements for technical level and experience are relatively low.

Price difference

Since the rigid waterproof casing pipe is more complex and sophisticated in structure and material selection, its price is usually higher. The general steel casing pipe is more affordable because of its relatively simple structure and material.

However, it should be noted that price is not the only criterion for measuring the quality of pipeline protection materials. When choosing, it is also necessary to comprehensively consider factors such as the specific needs of the project, budget, and material performance.

Maintenance difference

Rigid waterproof casing pipe

1. Due to its special waterproof structure and material selection, rigid waterproof casing pipe requires regular maintenance and care to ensure the stability and durability of its performance.

2. During maintenance, it is necessary to check whether the sealing and anti-corrosion performance of the casing pipe are good, and to handle and repair them in time.

General steel casing pipe

1. General steel casing pipe is relatively simple, and it does not require special maintenance and care.

2. During long-term use, it is still necessary to check whether the connectors and fixings of the casing pipe are loose or damaged, and replace or repair them in time.

Precautions in practical application

In practical application, the choice of rigid waterproof casing pipe or general steel casing pipe needs to be comprehensively considered according to the specific needs and conditions of the project. Here are some things to note:

1. Understand the project requirements

Fully understand the specific needs and conditions of the project, including information such as the material, specification, quantity and installation location of the pipeline. This information will help determine the type and quantity of casing pipe required.

2. Choose the right material

Choose the right pipeline protection material according to the needs and conditions of the project. For occasions where waterproof performance is required, you can choose a rigid waterproof casing pipe; for the protection and support needs of general pipelines, you can choose a general steel casing pipe.

3. Consult professionals

During the selection and installation process, it is recommended to consult professionals for design and construction. They can provide professional advice and guidance to ensure the quality and safety of construction.

4. Strictly follow the specifications

During the construction process, it is necessary to strictly follow the relevant standards and specifications. Ensure that the sealing between the casing pipe and the wall is good, and the fixings and connectors of the casing pipe are installed correctly.

5. Regular maintenance and care

For rigid waterproof casing pipe, regular maintenance and care are required to ensure the stability and durability of its performance. For general steel casing pipe, it is necessary to pay attention to check the looseness or damage of the connectors and fixings, and replace or repair them in time.

Summary

Rigid waterproof casing pipe and general steel casing pipe have a wide range of applications and important roles in the field of pipeline protection. They each have unique characteristics and advantages, suitable for different occasions and needs. When choosing, it is necessary to comprehensively consider factors such as the specific needs of the project, budget, and material performance. Through reasonable selection and use, the pipeline system can be effectively protected, the service life can be extended, and the safety and reliability of the pipeline system can be ensured.

Read more: Specifications and dimensions of oil casing or The difference between tubing and casing