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About Yuanyang

Dongtai Yuanyang Stainless Steel Manufacture Co., Ltd. is founded in 2001. We specialize in producing a wide range of pipe fittings from different materials, like austenitic stainless steel, duplex stainless steel, and nickel-based alloy. We are expert in producing pipe elbow, pipe reducer, industrial flange, pipe connectors, pipe couplings, just to name a few. The pipe fittings we made are extensively applied in oil plant, new energy factory, pressure vessel, gas and oil pipeline, etc.

Yuanyang was established with a registered capital of 108 million yuan, with the fixed asset reaching 120 million yuan. We are only 2.5 hour drive from Shanghai. This has endowed us with significant advantages in terms of product shipping. Our factory takes up an area of 80040m2, among which the building area accounts for 52500m2.

Till now, Yuanyang has exported its products to many countries and regions including Europe, America, the Middle East, and the Southeast, etc.

Manufacturing & Quality Inspection

Yuanyang possesses 3 workshops, respectively pipe fitting workshop, forging workshop, and flange workshop. Manufacturing equipment incorporates CNC sawing machines, plasma cutting machines, 4-column hydraulic press, hydraulic press for pipe tees (allowing for pipe diameter of DN600, the highest level in China), intelligent solid melting furnace, beveling machine, natural gas furnace, die forging hammer, 1000-ton hydraulic press, CNC lathe, fully automatic high-speed drilling machine, as well as other over 300 sets of large machineries. Every year, Yuanyang fabricates more than 3000 tons of DN15-DN2500 pipe flanges, and over 2500 tons of DN15-DN2000 pipe fittings.

Our Machinery and Metallurgy Inspection Center is established cooperatively with Dongtai’s Product Quality Supervision and Inspection Institute. It has the qualification of a third-party testing organization. In the center, we have over 100 sets of inspection equipment, including desktop optical emission spectrometer from SPECTRO, chemical analysis and testing center, fully automatic carbon/sulfur analyzer, high-speed analyzer, X-ray testing chamber, ultrasonic flaw detector, magnetic particle detector, infiltration detector, ultrasonic thickness gauge, computer-controlled electronic universal testing machine, 60-ton hydraulic universal tensile testing machine, low-temperature impact testing machine, metallographic analyzer, and infrared thermometer, etc.


Yuanyang has passed the ISO9001:2008 quality management system certificate, the ISO14001:2004 environmental system certificate, and OHSAS18001 certificate. With the certificates of TS, PED, and AD2000 (TUV), Yuanyang is given the authorization to manufacture and supply special equipment in many countries. Besides, we have passed the classification society certificates of CCS, LR, DNV-GL, ABS, BV, and CRN, etc.

Yuanyang is a qualified supplier of Linde AG, PetroChina Jilin Petrochemical Company, Daqing Refining and Chemical Branch Company, and Sinopec Qilu Petrochemical Corporation. In addition, we have obtained the license to access the Sinopec’s material procurement website, the first-level supplier and recommended product certificate from Sinopec and CNPC, and the supplier access certificate from JCC.

About Yuanyang
Dongtai Yuanyang Stainless Steel Manufacture Co., Ltd.
Add.: No.1, Dongyuan Road, Qindong Town, Dongtai City, Jiangsu Province, China
Fax: +86-515-85520426
Email: fengyp@dtyuanyang.com
Post Code: 224212
Contact person: Ms Yvonne Feng