What is the fixed length of spiral welded pipe?

What is the fixed length of spiral welded pipe?

The fixed lengths of spiral welded pipes (SSAW) are generally 6 meters, 12 meters and 18 meters. These lengths are determined based on production needs. Generally speaking, choose a shorter fixed length for smaller steel pipe lengths, and choose a longer fixed length for larger steel pipe lengths.

What are the factors that influence the fixed length of spiral welded pipe?

1. Use of steel pipe
Different uses of spiral welded pipes will affect the selection of fixed length. For example, ventilation ducts used inside buildings are generally shorter in length, so the cut-to-length length is also shorter, while spiral steel pipes used for large engineering materials such as natural gas pipelines are longer in length.

2. Production process

The production process of spiral welded pipes will also affect the selection of fixed length. For example, using a shorter fixed length can reduce useless residual materials and reduce costs, but it will also increase the number of connecting joints and the difficulty of construction.

How to choose the fixed length of spiral welded pipe?

When selecting the fixed length of spiral welded pipe, it is necessary to comprehensively consider various factors such as the use of the steel pipe, production process, cost and construction difficulty. Generally, when the fixed length of the spiral steel pipe does not affect the construction, the fixed length should be chosen as short as possible to reduce costs and waste materials. If you are purchasing a large amount in a short period of time, you can also choose an appropriate fixed length based on usage, inventory and other factors.

The relationship between the fixed length and price of spiral welded pipe:

The yield rate of welded pipe production of fixed-length pipes is significantly lower than that of ordinary length pipes, so it is reasonable for manufacturers to request a price increase. The price increase range varies from company to company, but is generally about 10% above the base price.

The fixed length should be within the usual length range and should be a fixed length required in the contract. However, it is impossible to cut an absolute fixed length in actual operations, so the standard stipulates the allowable positive deviation value for the fixed length. If there are no provisions for length deviation and cutting allowance in the standard, it should be negotiated between the supplier and the buyer and specified in the contract.

The double-length scale is the same as the fixed-length length, which will significantly reduce the yield rate of the manufacturer. Therefore, it is reasonable for the manufacturer to propose a price increase, and the price increase range is basically the same as the fixed-length length.

Conclusion: 

The fixed lengths of spiral welded pipes are generally 6 meters, 12 meters and 18 meters, which are determined according to production needs. When choosing a fixed length, various factors such as steel pipe usage, production technology, cost and construction difficulty should be considered comprehensively.

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