HG/T 20592  法兰 WN 400(B)-16 RF S=6–®—Ю–Т¬∞–®–И–Т¬†–®—Ю–Т—С–®в�

WN400(B)-16RF S=6–®—Ю–Т¬∞–®–И–Т¬†–®—Ю–Т—С–®в�

PL80B-16RF41600Fch49 SM.60220-3501-25RF

JWN 25×50-300 T Sch40S-300 RF B=Sch40chn400-600 RF S5(s

WN450-600RJSch6040b=14

WN 3/4"-300 RF Sch40S

WN50(B)-16 RF40