宁波市鄞州特钢紧固件厂是一家新行的专业生产高强度紧固件工厂 。主生产美标紧固件:ASTM A193 B7/B7M/B8/B8M/B16;ASTM A320 L7/L7M;ASTM A449;ASTM A490/A490M;ASTM A307/A307M;ASTM A325/A325M;ASTM B16.5。ASTM A194 2H/2HM/GR7/GR8;ASTM A563/A563M;D-6;D-12….系列。德标紧固件：DIN933 ;DIN931;DIN912;DIN934...详细>>