Factory Direct Steel Pipes and Tubes with Competitive Prices

Seamless Carbon Steel Structural Tube is manufactured for structural, mechanical and general engineering applications. We supply hot rolled and cold drawn seamless tubes in common carbon and alloy structural grades, with standard sizes, customized lengths and further processing such as cutting, beveling, galvanizing and corrosion protection.

Rongheng supplies High-Temperature Seamless Carbon Steel Pipe for boilers, thermal power systems, steam transmission, heat recovery units and high-temperature process pipelines. Manufactured from quality carbon steel, the pipe is designed for continuous service at 425°C, with short-term service up to 450°C and a rated pressure of 10 MPa at 425°C. Available to GB/T 9948 and ASTM A106 Gr.B requirements, it can be supplied in fixed lengths and with chamfering or internal polishing for project installation.

Carbon Steel Seamless Pipe for Pipeline Systems is used for the transportation of water, oil, gas, steam and other industrial media where the pipeline requires a continuous, non-welded pipe body. Available in 20#, Q235B, Q345B, A106 Gr.B and A53 Gr.B, with outside diameters from 21–630 mm and wall thicknesses from 1–50 mm. Standard 6 m and 12 m lengths are available, with custom sizes, pressure classes and surface treatments for project applications.

Seamless Oil Tubing for Oilfield is installed inside the casing as the production or injection flow path for oil, gas and formation water. It is smaller in diameter than casing and can be removed and replaced during well servicing. We supply tubing in common API 5CT grades, sizes and thread connections for conventional, deep, sour and high-pressure oil and gas wells.

Oilfield seamless casing pipe is used in oil and gas wells to support the wellbore, isolate different formations and provide a controlled path for drilling and production operations. We supply casing in J55, K55, N80, L80, P110 and Q125 grades, with available sizes, thread connections and lengths matched to well design requirements.

Zinc-Aluminum-Magnesium Coated Rectangular Steel Tube combines a rectangular hollow section with a zinc-aluminum-magnesium protective coating. The flat-sided section is useful where the tube needs to fit closely against walls, frames, panels or equipment surfaces, while the coating is intended for outdoor and humid service. Common applications include photovoltaic structures, curtain wall frames, equipment racks, greenhouse structures and municipal steelwork.