Length of Stainless Steel Pipe and Tube
Delivery length is also called the length required by the user or the length of the order. The standard has the following regulations on delivery length:
A. Normal length / Random Length (also called non-fixed-length length): Any stainless steel tube whose length is within the length range specified by the standard and has no fixed length requirement is called normal length. For example, the structural stainless steel pipe standard stipulates: hot-rolled (extruded, expanded) steel pipe 3000mm ~ 12000mm; cold drawn (rolled) steel pipe 2000mm ~ 10500mm.
B. Fixed Length: The fixed-length should be within the usual length range, which is a certain fixed-length dimension required in the contract. However, it is impossible to cut out the absolute fixed-length length in actual operation, so the standard stipulates the allowable positive deviation value for the fixed-length length.
Take the structural stainless steel pipe standard as:
The yield rate of production of fixed-length pipes is much lower than that of normal-length pipes, and it is reasonable for manufacturers to request price increases. The rate of price increase varies from company to company. Generally, the price increase is about 10% on the basis of the base price.
C. Length of double ruler: The length of the double ruler should be within the usual length. The contract should indicate the length of the single ruler and the multiples of the total length (for example, 3000mm×3, which is 3 multiples of 3000mm, and the total length is 9000mm). In actual operation, the allowable positive deviation of 20mm should be added to the total length, plus a margin for the incision of each single ruler length. Take the structural pipe as an example, the allowance for cutting is stipulated: 5-10mm for outer diameter ≤159mm; 10-15mm for outer diameter >159mm.
If there is no double-length deviation and cutting allowance in the standard, it should be negotiated by the supplier and the buyer and indicated in the contract. The double-length scale is the same as the fixed-length length, which will bring about a substantial reduction in the yield rate of the manufacturer. Therefore, it is reasonable for the manufacturer to raise the price, and the price increase is basically the same as the fixed-length length.
D. Range length: The range length of the stainless steel pipe is within the usual length range. When the user requires a fixed range length, it must be indicated in the contract.
For example: Usually the length is 3000~12000mm, and the range cut-to-length length is 6000~8000mm or 8000~10000mm.
It can be seen that the range length is looser than the fixed-length and double-length length, but it is much stricter than the usual length, which will also reduce the yield of production enterprises. Therefore, it is reasonable for the manufacturer to raise the price, and the price increase is generally about 4% above the base price.
Related References:
Pipe Schedule
Stainless Steel Tube Size
ASME B36.10M Welded and Seamless Wrought Steel Pipe
ASME B36.19M Stainless Steel Pipe
Pipe Schedule
Gauge Size
Nominal Pipe Size
Stainless Steel Pipe Dimensions
Sheet Metal Gauge
Stainless Steel Pipe Size
Stainless Steel Tube Size
ANSI Standard Pipe Chart
Inch to mm Chart
B.W.G. – Birmingham Wire Gauge
A.S.W.G. American Standard Wire Gauge
Gauge Tolerances of Stainless Steel
Conversion Table of Temperatue, Length,Mass,Pressure
NPS-Nominal-Pipe-Size and DN – Diametre Nominal
ISO Tolerances For FastenersISO Tolerance Chart|Machining Process associated with ISO IT Tolerance GradeStainless Steel Thickness Weight Table
Galvanized Structural Steel Thickness Weight Table
Cold Rolled Steel Thickness Weight Table
Hot Rolled Steel Thickness Weight Table