After 25 years' development, TongYu has established a provincial enterprise technology center and an engineering technology research center, and developed 5 national key products and 24 patented techniques. We have won 13 scientific and technological achievements at or above the provincial level. Besides, TongYu has developed independently 12000t hydraulic open die forging press, AP1000 nuclear power main pipe with ultra-low carbon nitrogen stainless steel, and 316LN large ESR ingots whose largest weight is up to 83 tons.
In December, 2003, the Shandong Province Large-Scale Precision Pipe Mould Preparation Engineering and Research Center was approved by the Department of Science and Technology of Shandong Province. Since its establishment, under the support of advanced laboratory equipment and professional R&D talents, TongYu has developed DN50-2600 ductile iron pipe mould, 25MN CNC hydraulic straightening press, and large electroslag remelted ingots, among which the large-diameter ductile iron pipe mould was acknowledged by the Shandong Science and Technology Department and rated as national key product as well as a brand-name product in Shandong. In 2009, we made the first and largest DN 1400mm overall forged water-cooled ductile iron pipe mould in China, causing great concern of the forging industry and related authorities. Our 25mn CNC hydraulic straightening press has been successively applied in the 2004 National Torch Plan. Besides, our large electroslag remelted ingot was awarded with the Third Prize of Science and Technology Progress in Shandong Province.
China Machinery Industry Outstanding Enterprises
National Key Products: Large-Scale Electroslag Remelted Ingots
National New Products: Large-Diameter Ductile Iron Pipe Mould
National Key Products: CNC Planer for Elevator Guide Rail
National Key Products: MW Wind Turbine Main Shaft
Hi-tech enterprise of National Torch Program
Leading Enterprise in Shandong by Patent Awards
Third Prize for Large-Diameter Deep Hole Boring Rod
Energy Efficiency Enterprise in Shandong
Certificates & Patents
TongYu has now been certified by Quality Management System ISO9001, Environmental Management System ISO14001, Health & Safety Management OHSAS18001 and Military Quality Management System. We have also obtained American ASME nuclear MO certificate, registered certificates for forgings for boiler and pressure vessel, and license for producing pressure pipeline components. Other certificates we have got: BV, CCS, DNV, ABS, LR GL, KR, RA and RIN, etc.
A Large-Diameter Deep Hole Boring Rod
30t CNC 3-phase electroslag furnace
Slag charge flue gas drying technique