GB/T 12459  弯头 DN 20-490ELj s2./.216Cf

PL 100(B)-40 RF S=8405 RF

DN 20-4 90ELj s2./.216Cf

BL40-150RFF=1110 RF6F1

SW 40-10RFF00(B)-2.SCH80SRF6 Sc780RFRF

PL 450(B)-6 RF140ampampam300 RF/

so25(b)-16 mRF SCH46F6 FFsch80M340/s@F

PL 450-150 RF/S=40fpamEL D5/0

PL 50(B)-16 RF D=102.

WN150(B)-600