HG/T 20592  法兰 PL 150-6 RF0-10

PL150A-6RF0-10

PL40b-25RF8f5RF20-150Lmpampampam

PL450(B)-16 RF018F/5

HP-2 п╟п┘п╒б═п╟п┐п╟б├п╟п└п╒б─п╟п┌п╟б┴п╟п┘п╒б═п╟п┌п

WN 18"-2500 SFM Sch16

WN100-25RF HG/6-1

HP1-3 DN=1000 ะ�