ASME B16.5  法兰盖 BL 20"-2500 SFMTrfm0

BL 20"-2500 SFMTrfm0

WN 250-300 RF Sch4、0 RF&a

JWN 150×200(B)-25 RFRF..0235A2@R5

BI 1400121Fh8PL4 Sch40Spa�222@RFf6�5@00LG6SFh ScF@ï)

SO15-300RF6)-

IF 40-900 RJr0fF1/6J07

PL 25(b)-10 RFS6RF0

SOP RF 10K 250A�@00RSch2sss.5 RJ2hM0RFR900Sc