HG/T 20592  法兰 PL 450-2.5 FFh0h80f000-s0º�F

PL450(a)-2.5 fFh0h80f000-s0º�F

SO 200(B)-10 RF D=

SO 200-150 RF ASME B1

SO 200B-10 RF=

LWN 40-300 RF

SO 25(B)-16 RFsR/09 BL45FFMsB) SC

WN 50(B)-63 RF

WN65-150 RF Sch40 S=2.9F

WN 3"-150 RF Sch10S

WN40(B)-100FM S=CH4050 SFM Sch4016rfPTF072ampam