非标类：

       规格m1.0-m20.直径∮0.5-50mm.长度2.0-300mm.按ISO，JIS,ANSI,DIN,BSW,GB及非标制作.各种材质，可达到12.9级强厚。

Non-standard class:

    Specification m1.0-m20. diameter phi 0.5-50mm. length 2.0-300mm. according to ISO, JIS, ANSI, DIN, BSW, GB and non-standard production. A variety of materials, can be reached 12.9 thick and strong.