Non pwodwi DIN6914/A325/A490 boulon estriktirèl lou hex
Estanda DIN, ASTM/ANSI JIS EN ISO, AS, GB
Steel Klas: DIN: Gr.8S 10S,A325,A490,A325M,A490M DIN6914
Fini ZP, Hop plonje galvanize (HDG), oksid nwa,