標準號：SS 470 Pt.1-1999
中文標準名稱：非合金及精粒結構鋼的熱軋空心型材規范 ．第1部分：交貨技術要求
英文標準名稱：SPECIFICATION FOR Hot finished structural hollow sections of non-alloy and fine grain structural steels Part 1: Technical delivery requirements
發布日期：1999/1/1 12:00:00
實施日期：1999/12/31 12:00:00
適用范圍：This Part of this Singapore Standard specifies the technical delivery requirements for hot finished hollow sections of circular, square or rectangular form and applies to hollow sections formed hot with or without subsequent heat treatment or formed cold with subsequent heat treatment to obtain equivalent metallurgical conditions to those obtained in the hot formed product. Fine grain steels are generally delivered in the normalised condition.The specified requirements apply to non-alloy base steel, non-alloy quality steel, fine grain non-alloy quality steel and fine grain alloy special steels as defined in European Standard EN 10020.The grades, chemical composition and mechanical properties for the non-alloy base and quality steels are given in Annex A.The grades, chemical composition and mechanical properties for the fine grain non-alloy quality and alloy special steels are given in Annex B.The products specified in this Part of this Singapore Standard are intended for use in construction.Requirements for tolerances, dimensions and sectional properties are contained in Part 2 of this standard (SS 470-2).NOTE - A range of material grades is specified in this standard and the user should select the grade appropriate to the intended use and service conditions. The grades and mechanical properties are compatible with those in EN 10025 and EN 10113.This Singapore Standard does not apply to products covered by the following standards:EN 10025 Hot rolled products of non-alloy structural steels - Technical delivery conditionsEN10113 Hot rolled products in weldable fine grain structural steelsEN 10155 Structural steels with improved atmospheric corrosion resistanceprEN 10219 Cold formed welded structural hollow sections of non-alloy and fine grain steelsprEN 10225 Weldable structural steels for fixed offshore structures