Taizhou Zhengfeng Perforated Tubes Co.,

Established in ***6 the ZFPTE Co.,Ltd. is a science research and technology development company specially works on petrochemical process and mechanical engineering equipment .
Since ***0 , the ZFPTE began to manufacture spiral seam welded perforated tubes for industrial filtration and separation.
In ***3,the ZFPTE managed punch small holes on thick stainless steel (Ф/δ≤1).
In ***4, the ZFPTE invented the first automatic rollingwelding machine by himself for spiral seam welded perforated tubes manufacture .
In May ***5, the ZFPTE laid down the standard of Spiral Welded Stainless Steel Cage for Liquid Filter that is not only the first but also the onlyone about the perforated tubes in China and it had been approved by the Technology Supervise Office of Gansu , P.R.China .
In July ***5, the ZFPTE not only the first but also the onlyone achieved ISO***1：***0 rigistration in manufacturing the spiral seam welded perforated tubes in China .
In June ***6, the ZFPTE have finished five automatic rollingwelding online making machines for large quantities of spiral seam welded perforated tubes manufacture .
In ***7, the ZFPTE invented successfully Atuomatic rollingwelding machine reserved for the use of large diameter or thin wall spiral seam welded perforated tubes(the range of diameter is from 7mm to **5mm,the range of thickness is from 0.6mm to 3.5mm ).
In ***8, the ZFPTE have got some new successes in rsearching  & developing new products.Such as louvered holes,edge joint welded seam perforated tube and lockseam perforated tubes. In the same year, we have work out a new standard 《 Spiral seam welded perforated pipes and tubes For Liquid Filter 》Q/LZF*****8 instead of Q/LZF*****5.
Up to now , the ZFPTE is the leading and the largest manufacturer in spiral seam welded perforated tubes.