长径和短径弯头 long and short radius elbows

短半径弯头 short radius elbow ; ELS ; short rdriving instructorus elribbon ; short rdriving instructorus ellair-cone

90度焊接短径弯头 Elbows 90 deg. short radius Steel butt-welding

长径以及短径弯头 long and short radius elbows

不锈钢短半径弯头 BXGWT