HG/T 20592  法兰 WN 80-25 RF s=10.5 ذ“ز“ذ–’ذ“ز¶ذ²ز–

wn80-25rf s=10.5 ذ“ز“ذ–’ذ“ز¶ذ²ز–

LWN20-300 RF Sch80s.060-1.6аПт–

WN150B-40M)-16 R3H40 H=/-059am

WN15-25 RF Sch3046 r

BL 300-10 RF800-53S)--4.5 R

wn50b-10rf0-)-40R/mpampampampam

WN 500-300 RF)ff r

WN15-25RFc1

WN150B-40RF=