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Carbon steel_un571 hexagon isi nke ukwu ahịhịa na zinc ahụ
Usoro nha dị oke mkpa: nke na-acha anụnụ anụnụ (na-enwu gbaa) -
Dun571 cransking osisi anaghị agba nchara hexagon
Isi okwu dị mkpa: usoro ihe dị larịị: Syric stay Style: Ọkpụkpụ Gongji: Nọmba Hongji: M2-M24 Standard: GB, DIVE ...