法兰规格与螺栓规格尺寸表法兰规格孔数与孔径螺栓(孔径*长度）254*13M12*50504*18M16*60804*18M16*601008*18M16*601508*22M18*702008*22M18*7025012*22M18*7030012*22M20*8035016*22M20*8040016*26M22*9045020*26M22*9050020*26M22*10060020*30M24*11070024*30M24*11080024*33M27*12090028*33M27*130100028*36M30*140120032*39M33*150160040*46M40*180
