Steel Tubes [India] Pvt. Ltd offers Carbon and Alloy Steel made Flanges. Steel Tubes [India] Pvt. Ltd is an ISO 9001 and ISO 14001 accredited company supplying ferrous and non-ferrous metal products like pipes, tubes, flanges, butt welding and pipe fittings. The Carbon and Alloy Steel made Flanges are durable in nature and are available in precise construction and flawless finish for application in various industrial sectors.