GB/T 9124.1  法兰 DN400-PN25 BL FF Ⅰ F��h4

DN400-PN25 BL FF ⅠF��h4

DN50-PN10 PL RF Ⅱ

LWN15-150 RF Sch16 WN450-600

SO 80(B)-25 RF

WN 300(B)-16 RF B=308

wn50a- 25 fmj sch401M60c92h16R=1

so20(b)-25tampampam Sch60M53600-1.6=4(a

LWN20-150RF SCH160 H=213

WN 40(B)-16 RF S=4

WN50B-10FMchB)-16