half-V weld 半V形焊

double-V groove weld 双斜坡口焊 ; 双斜边坡口焊缝

V-weld V形坡口焊缝

v-butt weld 形坡口焊缝

single V butt weld 单V形对接焊

double V butt weld 双V形对接焊

V groove weld 双斜边坡口焊缝

weld v 焊接