Where is the best large-diameter thin-walled steel pipe Q235D Liaocheng ATEN Pipeline Equipment Manufacturing Co., Ltd. The company has introduced a large straight seam roller Universal reel pipe production line and double-sided spiral submerged arc welded pipe production lines, the main production facilities are: Longitudinal Bending 25mmX2500mm one, 40mmX3200mm two sets, 80mmX3200mm one;. spiral pipe production units have ф219mm-1620mm type and ф529mm-3620mm type, one Taiwan company is divided into spiral pipe plant, straight seam pipe shop, shop and corrosion workshop structure and the establishment of product development center, engineering department and sales center and other functional departments, to comprehensively strengthen the quality management, has passed the ISO9002 quality system certification and (pressure piping components manufacturing license) quality system certification, product line with SY / T5040-2000, SY / T5037 -2000, GB / T9711.1-1997 and API standards. Its products are widely used in chemical, electric power, wind power, bridges, wharf construction, civil engineering and building construction, etc. The production line of high technology content, high degree of automation, accuracy High representative of the current domestic and international high-frequency straight seam welded steel pipe highest level.