used taylor winfield spot welder (rocker arm type) NB30-50 used taylor winfield spot welder (rocker arm type) NB30-50 used taylor winfield spot welder (rocker arm type) NB30-50 used taylor winfield spot welder (rocker arm type) NB30-50 used taylor winfield spot welder (rocker arm type) NB30-50 used taylor winfield spot welder (rocker arm type) NB30-50 used taylor winfield spot welder (rocker arm type) NB30-50 used taylor winfield spot welder (rocker arm type) NB30-50 used taylor winfield spot welder (rocker arm type) NB30-50