HG/T 21574  吊耳 SP-53

SP-5304

2 A3390

pl40(b)-10rf hg/t205R85

WN600-300 RF Sch40

2 A8755

LWN 2"-150 RF

SP-1522

PL 300(B)-16 RF4392

WN 1/2"-1500 RF Sch100

WN40-300RJ SCH4=900h80 S=7 H=065Fk3)-16 RF S=825 RF)50S26RFRFF25mR5.2 A4100 RF Sch400/u009d/u020-ââ‚16