GB/T 12459  弯头 DN 600-Sch1090EL Sch30=4FRFF@ch80SH40S@t.5 RJ

DN600-Sch10 90EL Sch30=4FRFF@ch80SH40S@t.5 RJ

LJ 20(B)-63 RF

PL400-16RF Ⅱ16

LJ 300(B)-40 RF

WN 25-16 RF Sch80S/data

WN 45(B)-63 RF S

so15b-300rf120

BL 20"-300 RF Sch40S

法兰SO125-150RF

LWN40-150 RF Sch160 H1=219�¦Â° bl40(b)-16rf-150RF6cH8