below-elbow socket 肘下接受腔

above-elbow socket 肘上接受腔

elbow with socket end 端部带凸肩弯头

SOCKET WELDING ELBOW 承插焊弯头 ; 搭焊肘板

Socket Elbow 承插弯头

Socket Elbow&Tee&Cross 弯头

socket welded elbow 承插焊弯头

SOCKET WELDING ELBOW R 搭焊肘板