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STD is identical to Schedule 40 for NPS 1/8 to NPS 10, inclusive, and indicates .375" wall thickness for NPS 12 and larger. XS is identical to SCH 80 for NPS 1/8 to NPS 8, inclusive, and indicates .500" wall thickness for NPS 8 and larger. Different definitions exist for XXS, but it is generally thicker than schedule 160. [2]
Nominal Pipe Size (NPS) is a North American set of standard sizes for pipes used for high or low pressures and temperatures. [1] " Nominal" refers to pipe in non-specific terms and identifies the diameter of the hole with a non-dimensional number (for example – 2-inch nominal steel pipe" consists of many varieties of steel pipe with the only criterion being a 2.375-inch (60.3 mm) outside ...
A history of the lumber industry in the state of New York (US Department of Agriculture, Bureau of Forestry, 1902) online; Fries, R. J. Empire in Pine. The Story of Lumbering in Wisconsin, 1830-1900 (1951); Irland, Lloyd C. "Maine Lumber Production, 1839-1997: A Statistical Overview." Maine History 38.1 (1998): 36–49. online
Lumber has been having quite the moment as of late. The ordinarily quiet commodity market has been the center of attention since a booming housing market and supply strain disruptions lead to an...
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Wood is a major building material that is renewable and replenishable in a continuous cycle. [38] Studies show manufacturing wood uses less energy and results in less air and water pollution than steel and concrete. [40] However, demand for lumber is blamed for deforestation. [41]
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