thyy 发表于 2014-12-29 08:51:50

AS 4291.7【2000】Mechanical properties of fasteners made of carbon steel and a

AS 4291.7【2000】Mechanical properties of fasteners made of carbon steel and alloy steel - Torsional test and minimum torques for bolts and screws with nominal diameters 1 mm to 10 mm.



admin 发表于 2014-12-29 11:23:49

谢谢您的分享,金币已奖励
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