GB/T 12459  弯头 DN 20-290EL40TD/@aF RF03

DN 20-2 90EL40TD/@aF RF03

PL50(B)-10 RF6 RF

So50-300RFRF00

3 M 2000-4.

BL 400-900 Msot0@so1/130-0Sl.5 RJch400F Sch40sch8

BL300(B)-10RFm

WN200-900 RF A

3 M 600-6.4 H=590(B)

SO450(B)-16RFh

3 RF 1100-4.0 δDF RF92fRFF5Smpl.5 RJch400F00.7-�0-0.6S=6F0