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About Us

ABOUT YUNKUN

Your Reliable
Seamless Steel Pipe Supplier

Yunkun Steel Pipe Group is a modern and comprehensive enterprise including four subsidiaries engaged in the stock sales, manufacturing, warehousing and logistics of special steel materials. With 19 years of experience in the special steel industry, Yunkun deeply focused on this sector. Being the largest stockiest of special steel in East China, Yunkun holds significant influence within the domestic special steel market. Yunkun can customize and supply steel products in accordance with GB, API, ASTM/ASME, DIN/EN, BS, JIS, and GOST standards, as per customer requirements. The company actives in the special steel grades including: 1026, 4330V, 4140,4145,4130,C110, T95, P125, P110, L80, K55, STFA25, STPA 25, STBA 25, T5, P5, X11CrMo5+I, X11CrMo5+NT, 15X5M, STFA22, STPA22, STBA22, T12, P12, 13CrMo44, 13CrMo4-5, 15XM, STFA23, STPA23,STBA23, T11, P11, STFA26, STPA26, STBA26, T9, P9, X11CrMo9-1+NT, X11CrMo9-1+1, 12X1M, 13Cr1Mo1V, STFA24, STPA24, STBA24, T22, P22, 10CrMo9-10, T91, P91, X10CrMoVNb9-1 among others, with an extensive inventory and ready-for-sales supply. The company’s warehousing and production bases are strategically located in major steel distribution hubs across China-Wuxi Huishan, Cangzhou (Hebei), Tianchang (Anhui), and Beicheng in Tianjin-offering geographic advantages and highly convenient transportation. Every day, Yunkun supplies various types of special steel to customers in key sectors like power generation, petrochemicals, machinery, shipbuilding, and oilfields. Yunkun has grown alongside over 700 clients, including Weatherford, China Baowu, CNPC, Sinopec, CNOOC, Sinochem, China Oil & Gas Pipeline Network, Zhejiang Energy, and China Resources Gas. To ensure a stable resource supply for its business growth, Yunkun maintains long-term agency partnerships with major steel producers, consisting CITIC Pacific Specifical Steel Group, Baosteel Special Steel, Heng Yang Steel Tube, Zhongyuan Special Steel, Xinxing Special Steel Pipes Co., HBIS SHISTEEL, Dongbei Special Steel Group and Baotou Steel. Yunkun provides these steelmakers with market promotion and distribution services for special steel products. Yunkun strives to build the most comprehensive and efficient special steel supply chain in China.

· High quality seamless steel pipe

· One-stop Solutions for Steel pipe

Production Equipment

Excellent Seamless Steel Pipe Manufacturing Plant

Hot expansion production line
Cold drawing production line
heat treatment furnace
Polishing production line

Four-cylinder hydraulic two-step propulsion pipe expanding machine

Function: The hot expanding unit heats the steel pipes through intermediate frequency coils and uses molds in coordination to push and form them into the sizes required by customers.

Testing Center

Ensure the quality of Seamless steel pipe

Our company possesses various testing equipment, such as ultrasonic eddy current flaw detectors, direct-reading spectrometers, pendulum impact testing machines, metallographic microscopes, extensometers, impact specimen saws, impact notch projectors, and impact testing cryostats, thereby ensuring that product quality 100% meets customer needs.

Impact test machine
Ultrasonic test machine
low-temperature Impact test
universal testing machine