... composition"6.GB/T14846-93 "aluminum and aluminum alloy extrusion profiles size deviation” Alloy ,variety, and quality standard of ... architectural profiles1. product variety(1) window profiles, 53 series doors and windows (common type and insulation ... 4, product standards1, GB5237.1-2004 "aluminum alloy extruded profiles for architecture Part 1: Substrate”2, GB5237.2-2004 ...