... ,ANSI,GB Material:Carbon steel,stainless steel Size:m3-m56 Surface:plate etc Threaded steel bar,threaded rods Threaded steel bar,threaded ... .8,5.8,8.8,10.9,12.9 6.surface: black,zinc plated,hot dip galvanized etcThreaded steel bar,threaded ... : 4.8,5.8,8.8,10.9,12.9 .Surface Treatment: Z.P. PLAIN, BLACK,HDG..Our capacity of production ...