EN1092-1 法兰标准Flanges PN 6 EN 1092-1Dimensions of PN 6 Flanges EN 1092-1桂林景点介绍NOTE 1: Dimensions N1, N2 and N3 are measured at the interction of the hub draft angle and the back face of the flange. N
英国标准1、BS10:2009Specification for flanges and bolting for pipes, Valves and fittings管子、阀门和配件用法兰和螺栓连接规范2、BS EN19:2002Industrial valves—Marking of metallic Valves通用工业阀门的标记3、BS EN 545:2010 (电子版)Duct
最新钻井缩写⼤全1.OH open hole裸眼2.FH full hole 满眼,贯眼at full speed3.AD assistant driller 副司钻4.NTP (N toolpusher)night toolpusher夜班队长5.RM reaming 划眼rig manager 平台经理6.Back RM back ream倒划眼7.CSG casing 套管8.TBG tub