MS Pipe IS1239 refers to a standard for mild steel pipes in India, specified by the Bureau of Indian Standards (BIS). Here's a brief overview: - "MS" stands for Mild Steel - "IS" stands for Indian Standard - "1239" is the specific standard number for steel pipes This standard covers the requirements for mild steel pipes used for general engineering purposes, such as construction, plumbing, and water supply. The pipes are classified into three categories: - Light (L) - Medium (M) - Heavy (H) The standard specifies requirements for: - Chemical composition - Mechanical properties (tensile strength, yield stress, elongation) - Dimensions (diameter, thickness, length) - Testing and inspection MS Pipe IS1239 is widely used in India and is a benchmark for quality and reliability in the construction and engineering industries.