
Yi Yi Special Steel (Jiangsu) Co., Ltd. Our company's stock products include: 16Mn seamless steel tubes, thick-walled steel tubes, large-diameter thick-walled pipes, etc. Our factory's cold-rolled precision bright pipes feature a smooth surface, even wall thickness, no oxidation layer, and high precision. The internal bore of the steel tubes can be round, spline, or梅花-shaped, and are widely used in the automotive, motorcycle, power, petrochemical, shipbuilding, aerospace, bearing, pneumatic components, hydraulic cylinders, boiler equipment industries. The materials available are: 10#, 20#, 35#, 45#, GCr15, 40Cr, 16Mn, etc. We can also customize various precision tubes according to customer requirements. Special materials and specifications can be pre-ordered. Our company produces seamless steel tubes in accordance with Chinese National Standard (GB), American ASTM (ASME), German DIN, Japanese JIS, and British BS standards on a regular basis, including low and medium pressure boiler tubes, high-pressure boiler tubes, shipbuilding seamless steel tubes, petroleum cracking tubes, high-pressure fertilizer equipment tubes, oil casing tubes, pipeline steel tubes, hollow sucker rods, general fluid steel tubes, structural tubes, and imported alloy steel tubes, etc. Our product range is extensive, with a complete range of specifications, and is widely used in the petrochemical, power, boiler, shipbuilding, machinery, and other industries. Our products have been sold throughout China. Many products have been exported to the Middle East, India, Southeast Asia, and Europe and the United States.
Simultaneously, our company has been producing, selling, and acting as an agent for the sales of seamless steel tubes and steel pipes from several major manufacturers, including Chenggang, Baogang, Angang, Tiegang, Henggang, and others. This includes grades such as 10#, 20#, 45#, 16Mn, 27SiMn, Q345B, 35CrMo, 20Cr, 40Mn2, 40CrMo, 20CrMnTi, 10CrMo910, 15CrMo, 12Cr1MoV, 20G, St52, S45C, as well as pipes for geological, pipeline, chemical, and power industries. All products comply with national standards: GB8162-87, GB8163-87, GB3087-82, GB5310-95, and GB6479-86. Our inventory is well-stocked with a complete range of products, including seamless steel tubes, high-pressure boiler tubes, oil cracking pipes, imported alloy steel tubes, alloy seamless steel tubes, bearing tubes, special welding pipes, spiral pipes, galvanized pipes, and stainless steel tubes. Adhering to the principle of low prices and high-quality sales, we ensure customer satisfaction and peace of mind. Honesty and professionalism are our service tenet. We are dedicated to providing top-notch products and excellent services to both new and existing customers and warmly welcome inquiries, letters, and personal visits for business discussions and work guidance!





