GB/T 12459  管帽 DN 150-Sch40SC RFc2@RF@443RF@AF500 T RJ RFpaF

DN 150-Sch40S C RFc2@RF@443RF@AF500 T RJ RFpaF

2 RF 500-2.5 δ1=8

WN 125-300 Thg

DN20-Class600 BL RJ Sch160@PLrf@40@S5 RJrvlet0M2RF01406mRFF.��Ã

BL 600-6 RF

SO 150-150 RF0000000

SO 1 1/2"-150 RF

SO 4"-150 RFRFS

2 RF 800-2.5 δ1=8

SO32-