Cement Steel Nail Product Name: Cement steel nail Product Specifications: 1 "-4" Material: Mild carbon steel 40 # -45 # Properties: Hardness: more than HRC50; shear strength t ≥ 980 Mpa; toughness curvature properties ≥ 75 Advantages: Super-hardness, superior quality and reasonable price. Product packaging: Sizes and packing according to your requirement Uses: For construction