UNIASEN is a Professional carbon steel pipe supplier. We Specialize in Manufacturing, Engineering, Quality Control, Packaging and Designing. With over 20 Years of Manufacturing Experience, UNIASEN has served more than 1000 Clients in Various Fields, such as Oil & Gas, Solar, Construction, and Machinery Manufacturing. The Main Products are API 5L Line Pipe, API 5CT Casing and Tubing, Torque Tubes, Piling Pipes, Slotted Liner, Compressor Tube, Roller Tubes, Sprinkler Pipes, Boiler Pipes, Steel Sections, Beams, Coils, Plates, and Fasteners. UNIASEN is also Familiar with all Production Standards, such as API 5L, API 5CT, EN10217, EN10219, EN10025, ASTM A500, ASTM A53, JIS G3444, JIS G3452, AS/NZS1163, AS/NZS1074, AS/NZS 1396, UL852 and FM. Tons of Pipes Have Been Exported Over the World.