HG/T 20592  法兰 PL 400-6 RFhg=|80RF/��SCr6-2025RFb=2.5

PL400-6RFhg=|80RF/��SCr6-2025RFb=2.5

BWN600-16 RF.06��

BL100-300Rf-25FM6 F/

PL150-40RF-PN16 BL RF Ⅱ6RF6.3

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╒б▒п╟п�