Types: M22*130, M22*150, M24*150, M26*150, M24*180, or according to drawings.
Material: Q235, 45#, 55#, 40Cr, 42CrMo, 35CrMo
Grade: 4.8, 5.6, 6.8
Surface Treatment: Black Oxide, Plain (Oiled), Zinc Plated, Hot Dip Galvanized