... properties:GB/T10433, DIN, EN ISO,AN 1) High strength types of bolts and nuts use: Apply to railway and highway bridge ... price referring to your detail request.So please kindlyinform us of the standard,size,surface treament and other requirement.2) ... qualitytechnical requirements,carry out "o" defect management, ensure the products of our company are quality,realiby,safety. 3) specifications and packing ...