GB/T 12459  弯头 DN 250-Ⅱ-690EL=228J�0 RF Sc10 R

DN 250-Ⅱ-6 90EL=228J�0 RF Sc10 R

DN25-PN40 WN G A S=4

47023 FM1400-1.0=82-155o20F00@AFF Sc 90EL8040s/u000fcT S@ RF

WN 80-150 RF Sch80S/data

wn200-63 rj gb/5RF

PL 15(B)-16 RFRF sch40S5 C=32.2 H

WN 80-150 RF Sch160/data

BL 80-150 RF/data

WN000-150R