This Japanese Industrial Standard specifies the carbon steel tubes (hereafter referred to as "tubes"), used for civil engineering and architecture such as steel towers, scaffoldings, footing piles, foundation piles, piles for landslide suppression. In application for foundation piles, however, this Standard is only applicable to welded steel tubes of outside diameter under 318.5 mm, and in application for piles for landslide suppression, to seamless steel tubes and welded steel tubes of outside diameter under 318.5 mm 1).
NOTE: The dimensional range covered by this Standard is generally outside diameter 21. 7 mm to 1 016.0 mm.
Note 1) For foundation piles and piles for landslide suppression of welded steel tube of outside diameter 318.5 mm or larger, JIS A 5525 applies.