GB/T 12459  同心异径管 DN 1200×10-Sch10SRC40 RC04

DN 1200×10-Sch10S RC40 RC04

wn80B-40rf00a4РҝТқТӘpfRF0@RF6 S RF Sch4 Rh40407.5 RJ/h5 RJ/.6-0.6B)6st7

BI 600-S/F=0-150RF RF1

SO 300(B)-16 RF/5./

pl600b-6RFcom/PLl150-259

WN500b-16RF S=16aRF

WN 80-300 RF

BL15-40RFamp

WN 200(B)-25 RF S=6.5F@ï؟�