Over 100 years expertise manufacturing high quality, spiral welded steel pipe. Steelpipe has been at the forefront of pipe technology and innovation since it commenced trading as Spiral & Lock-Bar Steel Pipe Company of New Zealand Limited in 1903. Over the years the Company has refined its spiral forming process with the development of butt welded spiral pipe in the 1950s. Today Steelpipe operates automatic double submerged arc welding, with world class non-destructive testing equipment, to produce pipes to the highest international standards for domestic and overseas markets.