GB/T 12459  弯头 DN 125-390EL1.606 RF376169F B=307.F B=307.9

DN 125-3 90EL1.606 RF376169F B=307.F B=307.9

DN 80-Ⅱ-3 90EL

PL 40(B)-16 RF

WN25-150RF

WN50-150RF

DN 50×50-Ⅱ-3.5 RC

WN 200-600 RF Sch80S

1 M 700-0.6 δs=8

PJ/SE 15(B)-40 RF S=5

PL 50(B)-16 RF�à¸ڈ=B=49.22F IRF250(b)-16rf10RF0 RF RF S=30 RF Sch4