What is the multiple length and range length of steel pipe

Multiple length of steel pipe: the multiple length shall be within the normal length range. The contract shall indicate the single length and the multiple of the total length (such as 3000mm x 3, i.e. 3 times of 3000mm, the total length is 9000mm). In practical operation, the allowable positive deviation of 20 mm should be added to the total length, and the allowance for each single length should be reserved. Taking the structural steel pipe as an example, it is required to reserve the margin of incision: 5-10 mm for the outer diameter ≤ 159 mm; 10-15 mm for the outer diameter > 159 mm.

If there is no multiple length deviation and cutting allowance in the standard, it shall be negotiated by both parties and indicated in the contract. The multiple length scale is the same as the fixed length, which will bring a significant reduction in the rate of finished products to the production enterprise. Therefore, it is reasonable for the steel pipe production enterprise to raise the price, and the increase range is basically the same as that of the fixed length.

When the user requires a fixed length range, it is usually required to specify the steel pipe length range in the contract. For example, the length is usually 3000-12000mm, while the range length is 6000-8000mm or 8000-10000mm.

It can be seen that the range length is more relaxed than the fixed length and multiple length, but it is much stricter than the usual length, which will also bring the reduction of the yield to the production enterprises. Therefore, it is reasonable for steel pipe manufacturers to raise their prices. Generally, the increase range is based on the base price.