Kian Persia Co. has been operating since 2001 in an area of 11 hectares, located in Shamsabad Industrial City of Tehran province, with the aim of producing all kinds of spiral and large-diameter straight seam steel pipes, and steel profile sections for water, oil, and gas transmission, and construction industry uses. The spiral and large-diameter straight seam steel pipes of Kian Persia Co. have the production and quality standard of AWWA C200 of America from MOODY company of England and also this company has ISO 9001:2008 certificate in quality management system as well as ISO/TS 29001:2010 certificate in the oil, gas and petrochemical industry. With advanced machines, this company has an annual production capacity of 120 thousand tons of spiral steel pipes with a diameter of 400 to 2500 mm (16-100 INCH) and also an annual production capacity of 60 thousand tons of steel pipes with a diameter of 200 up to 350 mm (8-14 INCH) and has an annual production of 120 thousand tons of all kinds of steel pipes and profiles with a diameter of 3/8-6 INCH.