Seamless Pipe is a durable material made from carbon steel, a steel alloy with iron and carbon. Because of its strength and ability to withstand stress, carbon steel pipe is used in a variety of heavy-duty industries like infrastructure, ships, distillers, and chemical fertilizer equipment.

Seamless carbon steel square tubes (commonly known as "carbon steel seamless square tubes") refer to hollow square cross-section steel tubes made of carbon steel (such as 20#, Q235B, Q345B, etc.) with no weld seams around the perimeter. They are formed by hot rolling, cold drawing or extrusion into seamless round tubes, combining the economy of carbon steel with the high strength and high reliability of seamless structures.

Seamless carbon steel square tubes (commonly known as "carbon steel seamless square tubes") refer to hollow square cross-section steel tubes made of carbon steel (such as 20#, Q235B, Q345B, etc.) with no weld seams around the perimeter. They are formed by hot rolling, cold drawing or extrusion into seamless round tubes, combining the economy of carbon steel with the high strength and high reliability of seamless structures.

Welded carbon steel pipes are steel pipes made from carbon steel (such as Q235, 20#, 45#, etc.). The steel plates or strips are rolled into shape and then welded using processes such as high-frequency welding, submerged arc welding, and electric arc welding to form longitudinal or spiral welds. They are a type of welded steel pipe, and their material is essentially carbon steel.

Welded square tubes are used in construction, machinery manufacturing, steel construction projects, shipbuilding, solar power generation brackets, steel structure engineering, power engineering, power plants, agricultural and chemical machinery, glass curtain walls, automobile chassis, airports, boiler construction, highway railings, housing construction etc.

Welded square tubes are used in construction, machinery manufacturing, steel construction projects, shipbuilding, solar power generation brackets, steel structure engineering, power engineering, power plants, agricultural and chemical machinery, glass curtain walls, automobile chassis, airports, boiler construction, highway railings, housing construction etc.

Thick-walled seamless carbon steel pipe is a steel pipe with no weld seam and relatively large wall thickness, made from carbon steel (such as 10#, 20#, 35#, 45#, etc.) through processes such as hot rolling, cold drawing or hot expansion. It is usually defined as a seamless pipe with an outer diameter to wall thickness ratio of less than 20.

Carbon steel scaffolding pipes (commonly referred to as "carbon steel scaffolding tubes") are straight-seam welded or seamless steel pipes used in construction for erecting coupler-type steel pipe scaffolding. They are primarily made of Q235 grade carbon structural steel, with a standard specification of Φ48.3×3.6 mm. They possess high strength, weldability, and cost-effectiveness, and are often galvanized or painted for rust prevention.