GB/T 12459  弯头 DN 250-390ELh801l106f b=212

DN 250-3 90ELh801l106f b=212

BL200-25RF)-0M0RF1RF/u00e3/u0080/u0081F0-150sc

APB-6-75 sch/4FM40δ=5

BL15-25T0-15

HG/T20592 PL25-6RF00-1

LWN25-150 RF

WN 100(B)-100 M S=8

SO450(B)-16FF=5

PL 300-40 RFF RF00-30-6 RF40 H=20RF5.5F

WN200-150RF/u020s=S1500��