Profile: SPI (Materials) Ltd specializes in the supply of stainless steel tubes, pipes, tubular components, and other engineered components, such as turned parts & stamped parts. We hold a stock range of welded tubes (Grades 304 and 409) with 1.2mm and 1.5mm wall thicknesses, suitable for the automotive exhaust market (not annealed). We have a range of welded and annealed tubes manufactured according to ASME SA249 suitable for heat exchanger manufacture. These can be supplied in cut lengths. Welded tubes are available in round, square, rectangle tubes. It is used as dairy, heat exchanger, ornamental and automotive tubes.