SSAW steel pipes applications and welding techniques

SSAW (Spiral Submerged Arc Welding) steel pipes are extensively used in a variety of construction projects, such as bridge construction, real estate development, and highway billboard supports. Their strength and durability make them ideal for these demanding applications. Did you know that there are three distinct methods for producing spiral welded seams in SSAW steel pipes? Let's explore these methods.

- Spiral Strip End Weld:

This technique involves welding the end of a spiral steel strip. It includes welding the steel head of the spiral strip onto the steel itself or welding the head and tail of the steel strip together. This method ensures a continuous, robust connection, which is essential for maintaining the pipe's integrity and strength.

- Two Spiral Butt Weld:

In this method, two spiral cuts are linked together to form an annular weld. This involves cutting the spirals and then welding them end-to-end. The annular weld provides a seamless and strong joint, critical for maintaining the structural integrity of the pipe under various stresses.

- Spiral Tack Welding:

Before the final welding is performed, spiral tack welding is applied. This preliminary step is crucial for fixing the butt weld edges in place. Tack welding involves applying a series of small, temporary welds to hold the components together. Once the edges are securely fixed, the final welding can be carried out, ensuring a precise and durable seam.

Additional Welding Technique: Spiral Overlap Welding

- Spiral Overlap Welding:

Another method used in the production of SSAW steel pipes is spiral overlap welding. In this process, the edges of the spiral steel strip overlap each other slightly before being welded. This overlap creates a stronger and more stable weld, which enhances the overall durability of the pipe. This method is particularly useful in applications where the pipe is subject to high pressure and external forces, providing an extra layer of security against leaks and structural failures.

By utilizing these advanced welding techniques, SSAW steel pipes can meet the stringent requirements of various construction projects, ensuring long-lasting performance and reliability.