HG/T 20592  法兰 WN 450-25 RF-п╟п÷п╒п┴п╟п▒�

WN450-25RF-п╟п÷п╒п┴п╟п▒�

SO 20(B)-16 RFr/95FF01.9Sc60L=1

WN 4"-150 RF Sch40=4.0/84-

47065.2 B6¢

BL65-2500RF0-1. 500-1.6沤脗=1002r19ni1n15-6/u0

JWN 250×300(B)-16 FM S=12

47023FM800-1.6/48-130h=

BL500-600RF350 RF Sc6/0r0c3/u