Spiral Steel Pipe Specifications and Dimensions
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Spiral Steel Pipe Specifications and Dimensions
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| Detailed Introduction
Spiral steel pipe dimensions are classified by outer diameter, inner diameter, and nominal diameter. For seamless steel pipes, the outer diameter is denoted by the letter D, followed by the outer diameter size and wall thickness; for example, a seamless steel pipe with an outer diameter of 108 mm and a wall thickness of 5 mm is indicated as D108×5. The nominal diameter, on the other hand, is a standardized designation used to specify the size of pipes or pipe fittings. The nominal diameter of a pipe does not correspond to its actual inner or outer diameter.
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