JIS B 1217:2018规定了用于连接JIS B 2220、JIS B 2239、JIS B 2240和JIS B 2241中规定的管道法兰(以下简称法兰)的螺栓、螺母和相关零件的要求。
JIS B 1217:2018 specifies requirements for bolts, nuts and associated parts used for joining the pipe flanges specified in JIS B 2220, JIS B 2239, JIS B 2240 and JIS B 2241 (hereafter referred to as flanges).