Spiral steel pipe connection methods and their respective advantages

Spiral steel pipes (SSAW pipes) are commonly used in construction, water conservancy, petroleum, chemical industries, and more. To ensure secure connections with strong sealing and excellent corrosion resistance, proper methods must be used. Below are the connection techniques for spiral steel pipes as explained by a carbon steel pipe manufacturer.

Flange Connection
A widely used method, flange connections are ideal for pipes that experience high temperatures, pressures, or corrosion, and for systems requiring frequent disassembly. It offers a simple structure, high reliability, and easy maintenance. To connect, a flange is installed at each end of the spiral pipe, and bolts are used to secure the flanges, forming a sealed connection.

Advantages:

Excellent sealing: Flanges and bolts prevent leakage.

Easy disassembly: Ideal for repairs and replacements.

Versatile: Suitable for various pipe shapes and sizes.

Direct Connection (Welding Connection)
Directly welding two spiral pipes together, this method is used for liquid and gas transport. It requires careful attention to avoid pipe deformation. Skilled welding and proper materials are essential for quality.

Advantages:

Strong connection: Creates a smooth, sealed weld.

Versatile: Works for many pipe shapes and sizes.

Corrosion resistance: Anti-corrosion coatings enhance durability.

Socket Connection
This method involves inserting the pipes into matching sockets and securing them with steel bars or sleeves. It is suitable for pipes with similar diameters and thinner walls. Though easy to construct, socket connections can be prone to leakage.

Advantages:

Simple construction: Fast installation and disassembly.

Effective sealing: Seals with rubber rings to prevent leaks.

Corrosion resistance: Anti-corrosion coatings protect the pipes.

Lap Connection
This method involves thinning the pipe wall, overlapping two pipes, and securing them with wire or welding. It is typically used for large-diameter pipes but requires careful installation techniques due to the complexity of the process.