云中龍0603 發(fā)表于 2012-8-10 12:16 4 `& w4 X2 t5 A/ w5 S1.050TGB-41/2TBG(不加厚油管螺紋量規(guī))、1.050UPTBG-41/2UPTBG(為外加厚油管螺紋量規(guī)),,螺紋為60°牙形 ...
云中龍0603 發(fā)表于 2012-8-10 12:55 " E% L# {! E4 D! e( ?: @' K, o# \; a GBT9253.2-1999-TBG螺紋
云中龍0603 發(fā)表于 2012-8-11 00:21 ( d% G8 `" T. r' I6 y* u' B( H沒有意思