Excel Metal And Engineering Industries manufactures Tubes & Pipes made of Stainless Steel. Excel Metal And Engineering Industries is also the manufacturer of duplex steel pipes and tubes. Tubes and pipes made of stainless steel are used in different industries including defense, railways, ports, shipbuilding, nuclear power etc. 15 NB is the starting size of pipes and tubes and it is available up to 1200 NB. The tubes and pipes are available in seamless, welded, ERW in round and square shapes. Standards for tubes and pipes of stainless steel are 904 L, 347 H, 321 H, 317 L etc. Standards for duplex steel pipes and tubes are S 32205, S 32750 etc.