JISB2220:2012(JPFA/JSA)SteelpipeflangesICS23.040.60;77.140.99Referencenumber:JISB2220:2012(E)PROTECTEDEYCOPYRIGHTJAPANESEINDUSTRIA...
JISB2220=2012(JPFA/JSA)SteelpipeflangesJIS82220一20J2(on)(I)!CS23.040.60:77.140.99n..r...立enumber:JJSB2220:20立也)PROTECTEDBYCOP...

