Standards: ASTM A563 GR.A, GR.B, GR.C and GR.DH ,8S, 10S Size: 1/2 to 3' Grades: A, B, C and DH Surface treatment: plain, zinc, nickel, HDG, black, dacromet and mechanical zinc plating Colors: white, red, blue and purple Packing: gunny bags and carton box