AWS A1.1-2016 Metric Practice Guide for the Welding Industry.pdf PDF 15.67MB 60页 BS 3692 2014 ISO metric precision hexagon bolts, screws and nuts. Specification.pdf PDF 1.92MB 48页 JIS B2292-1-2005 Hydraulic fluid power-Dimensions and identification code for mounting flanges and shaft ends of displacement pumps and motors-Part 1:Inch series shown in metric units.pdf 未知