NB/T 47065.1  支座 A 6602a

SW 4"-300 RFrf540-RF rf F

耳座A6602a

BL400-2.5 RF RJ Sch80RF5

WN80-25RF+=700-0.620Fch

DN 250×150-Sch80S RC

DN50-CLASS 300 WN/RF

DN20-CLASS 150 WN/RF

BL150-150 RF@RFrRJ ScRF11500

PL1200B-2.5RF1h11

ASME B16.47 WN500-150RF2020)-25RF111B Sch10S