NB/T 47022  法兰 C-RF 1600-0.25/20δ1=20

2 CRF 1600-0.2520δ1=20

a26005-RF Sch4s=-40rfR0S Sch8

WN 100-150 RF Sch40=40S RF@SO100

WN 12"-150 RF Sch40S RFF-

so 80-150 RF0-220-10FM050rfF S322HG RF.3 B0-49 f1 BL25-

so150-300rf2.0(bF S40 D=510 S=8

BL100-100G C=53RF0fb=4 H=6FF/2

WN80-16FM92-