The future of global small diameter pipe market looks good with opportunities in potable water and wastewater pipe, oil and gas, and industrial pipe segments. The global small diameter pipe market is expected to reach an estimated $103.8 billion by 2021 and it is forecast to grow at a CAGR of 3.2% from 2016 to 2021. The major drivers for market growth are increasing urban population, construction and infrastructure development, and recovery in oil and gas industry.