GB/T 29465  法兰 RF 0-1.5 B=46

SP-4 δ=8 S1=800691h6025(b)-25 rf0-1.5 B=46

DN200-PN10 PL RF Ⅱ

nb=t47023 fm900-1.0=4 RF)-2500 RF S

PL15(B)-16 RF

LWN 1"-300 RF B=B=24 Y=125R0(b)-25rff

BL350-300RF0ampamp Sch40S H1=18 A=324 B=3114

PL80(A)-10 RF D=190 K=152

WN100(A)-160 RJ S=7c8