JIS G3444 STK540
February 24, 2017
ASTM API 5L X80
February 24, 2017JIS G3444 STK500 steel tube/pipe, seamless steel tubes/pipes and welded steel tubes/pipes
JIS G3444 is the standard of carbon steel tubes for general structural purposes, STK500 steel tubes/pipes used for civil engineering, architecture, steel towers, scaffoldings, struts, piles for suppression of landslide and other structures.
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