HG/T 21574  吊耳 SP-25

SP-2517

SP-1798

BII 33536

SO 50-150 RFFRFRMS0�X@w5@RF

3 CT 500-1

WN 2 1/2"-2500 SG Sch80-

2 A7006

3 B4067

BII 37550

47022 C FM1300-0.6B)-150rf wn40050a6 RF& MfRF0@°F@4п�RF0@RF RF1655h40S.@RFSp&@t RF9247FFJ&=20sch40185/f=3ff0ch160hg/K