What is the fixed length of SSAW welded pipe?

The standard fixed lengths of SSAW (Spiral Submerged Arc Welded) pipes are generally 6 meters, 12 meters, and 18 meters. These lengths are determined based on production needs. Typically, shorter fixed lengths are chosen for smaller diameter pipes, while longer fixed lengths are selected for larger diameter pipes.

Factors Influencing the Fixed Length of SSAW Welded Pipe

- Use of Steel Pipe

Different applications require different fixed lengths. For instance, ventilation ducts used inside buildings usually require shorter lengths. In contrast, spiral steel pipes used for large-scale projects, such as natural gas pipelines, require longer lengths.

- Production Process

The production process can also affect the selection of fixed lengths. Choosing shorter lengths can reduce waste and costs but will increase the number of joints and construction difficulty.

Choosing the Fixed Length of SSAW Welded Pipe

When selecting the fixed length of a spiral welded pipe, it is important to consider factors such as the pipe's intended use, production process, cost, and construction difficulty. Generally, if the fixed length does not impact construction, a shorter length should be chosen to minimize costs and material waste. For large volume purchases within a short period, the fixed length can be adjusted based on usage, inventory, and other factors.

Relationship Between Fixed Length and Price

The production yield of fixed-length pipes is significantly lower than that of standard-length pipes, justifying a price increase by manufacturers. The price increase typically ranges around 10% above the base price, though this can vary between companies. The fixed length should be within the usual length range and specified in the contract. Absolute fixed lengths are impractical in actual operations, so allowable positive deviations are specified in standards. If no deviation or cutting allowance standards are provided, these should be negotiated and specified in the contract.

Similar to fixed lengths, double-length scales reduce the manufacturer's yield rate, justifying a price increase. The price increase for double-length scales is typically in line with that for fixed lengths.

Conclusion

The standard fixed lengths for spiral welded pipes (6 meters, 12 meters, and 18 meters) are determined by production needs. When choosing a fixed length, it is crucial to comprehensively consider the intended use, production process, cost, and construction difficulty.