GB/T 12459  同心异径管 DN 500×200-Ⅱ-13RCRJfF0

DN 500×200-Ⅱ-13 RCRJfF0

pl600- 6 rf18=3RF-2.5/2-F0ampama@WN-

DN400/PN40/01A=10

wn80-150 rf 6900-1513mpampq

SO 50(B)-16 RF(B)-10RF/f40M6

wn40-10 ff s=3.5G206

PL200(B)-6 RFc1.-25=8c

WN 80-600 RF S=313 RCRJfF0

WN 40(B)-16 RF S=4� Sch80S.

wn200- 16