Surplus Angle Iron 2 x 2 x 3/16 – 20′ 2 x 2 x 1/4 – 20′ 2 x 2 x 3/8 – 20′ 3 x 3 x 1/4 – 20′ & 40′ 4 x 4 x 1/4 – 40′ 3 x 2 x 3/16 – 20’s 4 x 3 x 1/4 – 40’s