標準號：BS EN 755-7-2008
中文標準名稱：鋁和鋁合金.擠壓的桿材/棒材、管材和型材.無縫管的尺寸和形狀公差
英文標準名稱：Aluminium and aluminium alloys — Extruded rod/bar, tube and profiles — Part 7: Seamless tubes, tolerances on dimensions and form
標準類型：H61
發布日期：2008/4/30 12:00:00
實施日期：2008/4/30 12:00:00
中國標準分類號：H61
國際標準分類號：77.150.10
適用范圍：This document specifies the tolerances on dimensions and form for aluminium and aluminium alloy extrudedseamless tubes with an outside diameter (OD) from 8 mm to 450 mm (round tube, see Figure 1) or with across section contained within a circumscribing circle (CD) from 10 mm to 350 mm (other than round tube, seeFigure 2), supplied in straight lengths.This standard only applies to tube produced by the seamless die/mandrel method of extrusion. This standardapplies to extruded seamless tube for general engineering applications only.The temper designations used in this part are according to EN 515.This European Standard does not apply to:? extruded tubes produced by porthole/bridge method (EN 755-8),? tubes delivered in coils (prEN 13957),? coiled tubes cut to length (prEN 13957).Figure 1 — Round tubeFigure 2 — Circumscribing circle for other than round tube