NB/T 47021  法兰 RF 800-1.0 δ0=6 Sch10Sch12004R@RF@4 Sch80320RFp009S��bïRF@F RF ScRF4data5 RJ RF RF

1 RF 800-1.0 δ0=6 Sch10Sch12004R@RF@4 Sch80320RFp009S��bïRF@F RF ScRF4data5 RJ RF RF

PL 150(B)-25 RF

WN 40-2500 RF S=8

TH 2 1/2"-150 RF

PL 300(B)-16 RF2056

LP-1

BL 80-16 RF

SP-1 DN=355

WN 4"-150 RF Sch4462

WN 50(B)-16 RF22940F2912=3.5