1.usage:half round bar for shipping use and machina CCS,ABS, GL,DNV,RINA,etc 2.smooth surface and high quaility 3.30mm ... the eight profession engineers of high strength steel wire,and five QC to keep the products good quality so that in overseas ... ,next we introduce the products as follows:1.Usage:Half round steel bar is widely used in shipping, rail, transport equipment, and2 ...