By Classification: -- Select specification here -- Product Specification Table Welded Steel Pipes - Class Light Welded Steel Pipes - Class Medium Welded Steel Pipes - Class Heavy Square Hollow Sections Rectangular Hollow Sections Carbon Steel Pipes for Ordinary Piping Carbon Steel Pipes for Machine Structural Purposes Aurora Brand British Standard Galvanised Steel Conduit Lipped Channels Mild Steel Plain Channels Hot-Dip Galvanizing Service Conversion Table of Zinc Coating By Specification: -- Select specification here -- MS 863:1983/BS 1387:1985/Manufacturer's Standard BS 31:1940 Class B(Screwed)/Manufacturer's Standard BS 729:1971 Hot-Dip Galvanized Coatings on Iron & Steel Articles ASTM A 153-67 Zinc Coating (Hot-Dip) on Iron & Steel Hardware ASTM A 123-69 Zinc (Hot-galvanized) Coating on products fabricated... ASTM A 500 Grade A and B/Manufacturer's Standard JIS G 3350:1987/Manufacturer's Standard JIS G 3445:1988 STKM 11 A/Manufacturer's Standard JIS G 3452:1997/Manufacturer's Standard