Liaoning Aotong Steel Pipe Co.,Ltd. is situated at the southwest of Anshan Iron & Steel Group, which is one of the iron and steel bases of China. It is endowed with unique geographical position and the superiority of facilely purchasing the raw materials. Furthermore,it is near the Harbin-Dalian express highway straight to the two seaports-Dalian and Yingkou,with good transport facilities.The company is the user of Ansteel with a long-term agreement.
The company was established in 1992, now,it has 700 staff which includes 200 professional technicians and 115 managerial persons,with total assets worth RMB 480 million and covering over more than 250,000 square meters of land.There are eleven sets of the machine unites for manufacturing the spiral welded pipes at the international modern level,annual productive capacity is up to 0.50 million tons,the diameter of the spiral welded pipes ranging from Φ219 mm to Φ3600 mm. And,therefore it is the productive base for manufacturing the spiral submerged arc welded steel pipes up to the largest diameter and capacity.For the whole unit the most advanced theory of the roll-type centripetal forming is adopted.And the world famous Lincoln welding machine is used.The double wires submerged arc automatic welding is adopted for the inner and outer welding. And it also adopts the laser tracking system of UK meta company for automatic monitoring.For the whole set of the unit is equipped with high level of automation control system of computer touch and furnished with online ultrasonic flaw detector and X-ray industrial TV set,end expansion and ray captured.For the auto-static water pressure test it can be carried out up to 25 Mpa.The whole unit owns high degree of automation,stable forming,and reliable welding quality,at the same time,we also own the world-level laboratory,advanced and all ready complete technical testing equipment,which could provide the reliable safeguard mechanism for product quality. Its production is organized according to the APIspec5L, GB/T9711.1-97,GB/T9711.2-99,SY/T5037-2000 standards.For the wall thickness of the spiral welded pipe it is 6 mm to 25 mm.the material grade of the steel is Gr.A,Gr.B---- X80.The company has a set of modern production line of 3-layer PE corrosion with the annual capacity of one million square meters,which is the most advanced manufacturers of PE anti-corrosion in China.
And its products have found widespread application in the pressurized pipelines for petroleum,natural gas,thermal power,water supply and gas,as well as in other projects such as chemical engineering,electric power,irrigation, structuring, ramming and others.
The company has passed the examination under the ISO9001: 2000 edition quality management system and certified by API International Quality System of American Petroleum Institute. And the company has been granted the manufacturing permit for industrial production by the People’s Republic of China. It has been awarded the title of one of the "Ten Stronger Welding Companies of China", "Membership Unit of China Petroleum Energy Ahead.com", the "Famous Brand of Liaoning Province" and the "Anshan Municipal Famous Brand". And this company is honored as "abiding by the contract in good faith" of Anshan City and the "AAA-Grade Enterprise"and so on.
Carrying forward the service purpose of "credit is the first, the users are the supreme, abiding by the contract in good faith and delivery at the fixed date",this company sincerely cooperates with our friends at home and abroad hand in hand to march forward jointly,making grand plans and establishing great undertakings.
