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AWS QC14-2009 Specification for the Certification of Welding Sales Representatives 1st Edition attachment IfI 2021-4-12 17:42 2663 2323 2022-8-13 04:12
ASTM D792-2008 用替换法测定塑料密度和比重(相对密度)的试验方法 attachment 2207635211qw 2021-4-14 09:12 22570 dd123456112 2022-8-11 08:55
ASTM D910-2004a 航空汽油规格 attachment qq1786546247 2021-4-12 08:42 22312 614556694 2022-8-8 23:08
IEEE C37.60-2012 High-voltage switchgear and controlgear. Part 111:Automatic circuit reclosers and fault interrupt... attachment 逍遥丿包子 2021-4-13 08:11 21014 158284871 2022-7-14 19:41
NSF SEPT-1999 attachment bbbbbbbbbbb 2021-12-7 22:51 2389 347284141 2022-7-14 00:34
ASTM B85-2003 铝合金模铸件规格 attachment 玩腻了 2021-12-6 07:50 21086 a2200281689 2022-7-6 20:25
UL 555-2006 UL安全标准 防火阀 attachment qq847046572 2021-4-10 01:32 21139 笑飞 2022-7-5 15:14
ASTM A370-2016 钢产品机械测试方法及定义 attachment ran110 2021-4-13 09:42 2781 科名仕 2022-7-3 15:51
AWS B5.4-2005 attachment 赤几魃 2021-4-12 10:19 22935 lyx2019989347 2022-7-3 08:57
ASTM E92-2016 Standard Test Methods for Vickers Hardness and Knoop Hardness of Metallic Materials attachment w10276 2021-4-11 01:51 22548 散人丶火凤 2022-6-1 11:35
AWS B1.11-2000 Guide for the Visual Examination of Welds attachment 132165156 2021-4-12 17:11 22917 xie627405927 2022-5-29 01:44
ASTM E18-2017e1 金属材料洛氏硬度试验方法 attachment sinid 2021-4-10 11:27 21740 受伤的小鸟 2022-5-27 00:52
ASME B16.4-2016 Gray Iron Threaded Fittings Classes 125 And 250 attachment karlarso 2021-4-13 02:47 21489 bbs168 2022-5-27 00:44
NFPA 484-2002 Standard For Combustible Metals attachment dengyusong 2021-4-10 18:48 22015 华夏子孙 2022-5-25 00:22
ASME B16.24-2016 Cast Copper Alloy Pipe Flanges And Flanged Fittings Classes 150,300,600,900,1500,And 2500 attachment tx-liang 2021-4-10 23:47 21309 散人 2022-5-22 19:14
ASTM D4459-2012 在室内使用的对塑料曝光用的加速耐光性氙弧型(水冷式)曝光装置的操作规程 attachment 余生就是余生。 2021-4-11 21:56 21765 1249827915 2022-5-15 06:30
ASTM D1217-2012 用宾汉比重瓶法测定液体密度和相对密度 attachment cestudio 2021-4-13 04:54 22332 2429737658@qq.c 2022-5-11 14:53
AWS A2.4-2007 Standard symbols for welding,brazing,and nondestructive examination sixth edition attachment jin2453001932 2021-4-13 19:09 22922 kingbbs 2022-5-3 15:12
ASTM D4728-2017 运输集装箱随机震动试验方法 attachment 1667293324 2021-4-11 23:26 2922 pei1046854901 2022-4-30 08:29
SAE J2392-2003 attachment 1185633550 2021-4-11 04:52 22027 manyqaz 2022-4-30 08:25
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