Anhui Suzhou straight seam steel pipe | thick-walled the Straight pipe joints | large-diameter straight seam steel pipe | Cangzhou City Dongtai Steel Pipe Co., Ltd., sales manager left Yu Peng: 18730700585 13333272002 large enterprises in North China specializing in the production and sale of steel pipes and pipe fittings one Yanshan County, Hebei Province Industrial Park is located in the pipeline equipment production base. East of Huanghua Port, north of Beijing, Tianjin, State Road 205, State Road 104, Beijing-Shanghai Railway cross transit, domestic transportation is very convenient; addition is only 200 kilometers away from Tianjin Xingang, to provide a more convenient conditions for the export business. The company covers an area of ??130 acres, 270 million yuan in fixed assets, the company has advanced production equipment and complete detection means. Now has eddy current flaw detector, ultrasonic flaw detector, nondestructive testing equipment, as well as hydrostatic testing machine WE-600 universal testing machine, WE-1000A hydraulic universal testing machine, as well as a full set of metallographic test equipment and physical chemistry instruments. The company has strong technical expertise, service capabilities and market competitiveness. The right to import and export company in 2008, based on the domestic market and exported to Europe, America and Southeast Asia, Africa and other places, and to establish long-term strategic partnership of cooperation with internationally renowned enterprises, praised by customers. The company adhere to the "integrity of management, quality marketing, and strive to win-win" concept of market operation, the right business ideas, the company has brought good economic returns, and laid a good foundation for network marketing. Production straight seam steel pipe production process can be divided into high-frequency straight seam steel pipes and submerged arc welding straight seam steel pipe. Submerged arc welding straight seam steel pipes are divided into their different ways of forming UOE, RBE, JCOE steel pipe. Here are the most common high-frequency straight seam steel pipes and submerged arc welding straight seam steel pipe forming process. Submerged arc welding technology board probe: used to manufacture large diameter submerged arc welding straight seam steel pipe steel into the production line, the first full-board ultrasonic testing; 2. Milling: Milling Machine the two edges of the steel plate-sided milling wide, so as to achieve the required board parallel and the shape of the groove of the board edge; 3. pre-bent edge: the use of pre-bending machine plate edge pre-bending, so that the board edge has to meet the requirements of the curvature; 4. molding: JCO molding on the first half of the pre-bending a steel plate after after repeated stepping stamping, pressed into a "J" shape, and then another of the steel sheet half similarly bent, pressed into a "C" shape, and finally to form the opening of the "O" ring 5. pre-welding: straight seam welded steel pipe seam after molding and continuous welding gas metal arc welding (MAG); 6. within welding: column multi-wire submerged arc welding (up to four-wire) straight seam steel pipe the side welding; outside welding: tandem multi-wire submerged arc welding; 8 Ultrasonic Inspection I: straight seam welded steel pipe inside and outside the weld and weld on both sides of the base metal LSAW steel pipe outside of 100% inspection; 9 X-ray inspection Ⅰ: internal and external welds 100% X-ray industrial TV check image processing system to ensure that the testing sensitivity; 10. flaring: submerged arc welding pipe joints straight the entire length of