GB/T 12459  弯头 DN 25-490EL.0A

DN 25-4 90EL.0A

SO100(B)-16 RF RF Sch40@b40-

WN125B-40FM k1

nb/@WN100-300 RF30 45E3p

WN 800(A)-16 RF

SO15-900 RJwn400-601.0/

WN600-300 M16rfwn100-

PL 450-6 RF6 C5-09=8 rf-16R0/64-RF00/231s.6F1

DN600-PN10 PL RF II C=36)-120 δ0=160-020Sch403h 45 s0c