NB/T 47065.1  支座 BⅠ 5508�ΓêÔ�

BI5508�ΓêÔ�

PL50-16ffrf sch400fMJ Scпё Î´=76/SCH4

WN150B-25RF S=10

BI 24000-400 RF Sch40RFR

WN 10"-150 RF Sch40

JWN 20×40(B)-16 RF S=2.5=200-2 S &amp

BL 4"-300 RF

SO 24"-150 RF0 C1.6/FS

WN 2"-900 RF Sch80

PL25(B)-4