Established in 1996 the ZFPTE Co.ï¼?Ltd is a science research and technology development company specially works on petrochemical process and mechanical engineering equipment. Since 2000, the ZFPTE has begun to manufacture the perforated tubes for cores and protective outer shrouds with the spiral seam welded. The range of diameter is from 7mm to 300mm, the range of wall thickness is from 0.6mm to 3.5mm, and the length can be no limited(longer than 15000mm), the tight tolerance is precise, such as, the roundness is 0.25mm, the straightness is 0.8mm/m, make them suite for a lot of importante fields, such as for protective out shrouds of sand control screens and high pressure filters of fabric. In 2008, the ZFPTE has developed new products---Sand control Screen, it is new special equipment for oil well. ZFPTE have been doing business with some foreign companies for 8 years. In 2005, it achieved ISO9001:2000 rigistration in manufacturing the spiral seam welded perforated tubes. At the same year, it laid down the standard of Spiral Seam Welded Perforated Pipes and Tubes for Liquid Filter, that is unique in China. Up to now , the ZFPTE is the leading and the largest manufacturer in spiral seam welded perforated tubes in Asia.