Types: M22*145, M22*155, M22*165, M22*185, M22*195, etc.

Material: Q235, 35#, 45#, 60#, 40Cr

Grade: 4.8, 5.6, 8.8, 10.9

Surface Treatment:  Black Oxide, Zinc plated, Galvanized, Plain (Oiled), Dacromet.