JIS B1217-2009《管道法兰栓接》
This Japanese Industrial Standard specifies 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 "flange").
Further, material, grade and strength classification of bolts, nuts and associated parts used for the lower temperature than the ordinary temperature shall be based on the agreement between the manufacturer and the purchaser.