The terms tubing and pipe can often mistakenly be combined with each other causing confusion during the quoting and ordering processes. Please see the following conversion chart showing the electric resistance welded steel tubing OD sizes and wall thicknesses that Valmont Tubing produces that match the corresponding nominal pipe sizes (NPS) in schedule 5, 10, 40 and 80 wall thicknesses. These nominal pipe sizes are most often associated with ASTM specifications A53 and A135.
Tubing provides more precise measurements for the outside diameter, inside diameter, wall thickness, chemistries and length than pipe specifications. In addition, a greater number of OD sizes are available to select from leading to easier fit, fabrication and formability for end users. For a complete listing of tubing sizes that Valmont produces, please visit our Steel Tubing Product Catalog.
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