Steel Tubes [India] Pvt. Ltd supplies Stainless/ Duplex Steel made Tubes. Steel Tubes [India] Pvt. Ltd is an ISO 9001 and ISO 14001 recognised company manufacturing ferrous and non-ferrous metal products like pipes, tubes, flanges, butt welding and pipe fittings. The Stainless/ Duplex Steel made Tubes are Precision engineered and are durable in nature and are available in different specifications to suit various applications in diverse industries.