GB/T 12459  弯头 DN 100-Ⅱ-1090ELpam

DN 100-Ⅱ-10 90ELpam

47023fm 1200-2.500F1000-RF9

法兰盖BL500-16 RF009 sch8

BL 20-300 RF S=NP

WN 32(B)-16 G S4-1 sch1c

bi 1600 l=80120 M

BL 250-16 RF RF SCH809S��pam

pl40(b)-16 rf 15/data/s

pl150a-40RF= b1=72410(B)-8m600-1.00.

WN 50-900 F