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square and rectangular tubes are versatile, used in building steel structures, machinery, bridge supports, transit, greenhouses, auto manufacturing, and custom equipment frames, meeting diverse needs.

Strength refers to a welded square tube's ability to resist damage (plastic deformation or breakage) under static load, including stretching, tightening, winding, shearing, and other forms of stress.

Square tubes can be welded using a variety of methods: manual metal arc welding, gas shielded welding, submerged arc welding, argon tungsten arc welding, and plasma arc welding.

Premium galvanized square tubes with durable zinc coating for superior corrosion resistance. Ideal for construction, fencing & industrial use. Strong, long-lasting, ready to ship!

Yuantai Derun is a professional steel pipe manufacturer, mainly producing square pipes, galvanized pipes, LSAW, ERW, spiral pipes, seamless pipes.

Galvanised steel is a perfect choice for applications where steel parts are exposed to atmospheric corrosion.

Yuantai mainly produces square and rectangular pipes, galvanized pipes, spiral pipes, seamless pipes, LSAW, ERW steel pipes, etc

Galvanized square pipe is a galvanized pipe, which has two types: hot-dip galvanized square pipe and cold-dip galvanized square pipe.

Galvanizing is an economical and effective anti-corrosion method that is often used. Galvanized sheet refers to a steel sheet with a layer of zinc on the surface

Carbon steel pipe is a common steel pipe, mainly composed of carbon and iron alloy. The main characteristics of carbon steel pipe are good machinability, heat treatment and weldability.

Carbon steel pipes are widely used in industry, construction, automobile manufacturing, petrochemical industry and other fields.

Differences between steel grades Q195, Q235, and Q355

Hot-Dip Galvanized Square Steel Pipe (HDG) has become an indispensable and important material in the modern construction industry due to its excellent performance and wide applicability.

The following are several common ASTM standards for carbon steel pipes