GB/T 9124.1  法兰 DN120-PN6 PL RF Ⅰ žâ�500

PL100-10rf/ 165pa04MF1.009s455

DN120-PN6 PL RFžâ�500

WN250(A)-2500RJð

PL50(B)-16 RF40S Y=1

wn200(a)-25 rf s/u00c3/u00

WN150-40FM6 RF/u00c3/u00a2/u00e2/u/ch40S/

47023 FM 800-2.5/5 Sch40=2

PJ/SE 300(B)-16 RF S=3

WN40-150 RF ASME B16.5

WN50-150FFS=