Durable Steel Profiles for Industrial Applications

ZHONGTIAN Black Flat Steel Bar is hot-rolled carbon structural steel, made of Q235B or Q355B. It retains the hot-rolled black skin surface without a galvanized anti-corrosion layer, making it an economical raw material for processing. It possesses excellent weldability, machinability, and load-bearing capacity, and is widely used in mechanical parts, equipment frames, steel structures, embedded parts, supports, and secondary processing projects. It is especially suitable for customers requiring further cutting, drilling, welding, painting, or galvanizing. Factory direct supply ensures stable quality, flexible specifications, and custom cutting is available.

ZHONGTIAN Hot Dip Galvanized Flat Steel Bar is manufactured from Q235B and Q355B low-carbon steel through hot rolling and hot-dip galvanizing processes. The product forms a dense zinc protective layer through high-temperature molten zinc treatment, creating a strong metallurgical bond between the zinc coating and steel substrate.

ZHONGTIAN Black Channel Steel, also known as Hot Rolled Channel Steel or Untreated Steel Channel, is a structural steel profile produced by high-temperature hot rolling without galvanizing, painting, or coating. Its black surface is formed by natural iron oxide scale during rolling and cooling. Made mainly from Q235B and Q345B carbon steel, it offers high strength, good weldability, easy fabrication, and cost efficiency, making it suitable for indoor structures, machinery frames, equipment bases, and industrial supports.

Galvanized Channel Steel, also known as Hot Dip Galvanized Channel Steel or Galvanized Steel Channel, is a corrosion-resistant structural steel profile manufactured from high-quality carbon steel such as Q235B and Q345B. The product is produced through hot rolling and then processed with a hot dip galvanizing treatment, where the steel channel is immersed in 440–460℃ molten zinc to form a durable protective coating consisting of a pure zinc layer and zinc-iron alloy layer.

Black Angle Steel Bar is a hot rolled steel angle profile produced from Q235B, Q355B, and other carbon steel grades, supplied in its original mill finish condition. Formed through high-temperature rolling, it features a dense steel structure, dependable strength, and excellent weldability for various fabrication processes. With flexible sizing options and cost advantages, it is commonly used in general steel fabrication, machinery bases, support structures, and engineering projects requiring further processing or customized surface treatment.

ZHONGTIAN Galvanized Angle Steel Bar is a durable corrosion-resistant structural steel profile manufactured through hot dip galvanizing of high-quality carbon steel and low alloy steel materials such as Q235B and Q355B. Featuring a strong zinc protective coating, excellent load-bearing capacity, good weldability, and long service life, it is available in equal and unequal angle designs. It is widely used in steel structures, power transmission towers, construction frames, equipment supports, and outdoor engineering projects requiring reliable corrosion protection.