Introduction to Black Backed Steel Tubes

Black Annealed Steel Pipe (BAP) is a type of steel pipe that has been annealed black. Annealing is a heat treatment process in which steel is heated to an appropriate temperature and then slowly cooled to room temperature under controlled conditions. Black Annealed Steel Pipe forms a black iron oxide surface during the annealing process, which gives it a certain corrosion resistance and a black appearance.

Black annealed steel pipe material

1. low carbon steel (Low Carbon Steel): low carbon steel is one of the most common black annealed square pipe material. It has a low carbon content, usually in the range of 0.05% to 0.25%. Low carbon steel has good workability and weldability, suitable for general structure and application.

2. carbon structural steel (Carbon Structural Steel): carbon structural steel is also commonly used in the manufacture of black retired square tube. Carbon structural steel has a higher carbon content, in the range of 0.30% to 0.70%, to provide higher strength and durability.

3. Q195 steel (Q195 Steel): Q195 steel is a carbon structural steel material commonly used in China to manufacture black exit square tubes. It has good workability and toughness, and has certain strength and corrosion resistance.

4. Q235 steel (Q235 Steel): Q235 steel is also one of the carbon structural steel materials commonly used in China, widely used in the manufacture of black retreat square tube.Q235 steel has high strength and good workability, is a commonly used structural steel materials.

Specification and Size of Black Exit Steel Pipe

The specifications and sizes of black receding steel pipe can vary according to different standards and requirements. The following are some of the common ranges of specifications and dimensions of black exit steel pipe for reference:

1.side length (Side Length): black retreat square tube side length can be from small to large, common range including but not limited to:

-Small size: side length of 10mm, 12mm, 15mm, 20mm, etc..

-Medium size: side lengths of 25mm, 30mm, 40mm, 50mm, etc.

-Large size: side length of 60mm, 70mm, 80mm, 100mm, etc.

-Larger size: side length of 150mm, 200mm, 250mm, 300mm, etc.

2.Outer Diameter (Outer Diameter): The outer diameter of the black retired steel pipe can be from small to large, the common range includes but is not limited to:

-Small outer diameter: common small outer diameter including 6mm, 8mm, 10mm, etc..

-Medium O.D.: Common medium O.D. includes 12mm, 15mm, 20mm and so on.

-Large O.D.: Common large O.D. includes 25mm, 32mm, 40mm and so on.

-Larger OD: Common larger OD includes 50mm, 60mm, 80mm, etc.

3.Wall Thickness (Wall Thickness): black retreat square tube wall thickness also has a variety of options, the common range includes but is not limited to:

-Small wall thickness: 0.5mm, 0.8mm, 1.0mm, etc..

-Medium wall thickness: 1.2mm, 1.5mm, 2.0mm, etc.

-Large wall thickness: 2.5mm, 3.0mm, 4.0mm, etc.

Product characteristics of black annealed steel pipe

1.Excellent toughness: black annealed square pipe has good toughness and workability after black annealing treatment, easy to bend, cut and weld and other processing operations.

2.Surface treatment is simple: the surface of black annealed square pipe is black, which doesn't need to go through complicated surface treatment process, saving the production cost and process.

3.Wide adaptability: black annealed square tube can be customized and processed according to the needs of a variety of different structures and applications, such as construction, machinery manufacturing, furniture manufacturing and so on.

4.high strength: black annealed square tube is usually made of low carbon steel or carbon structural steel, which has high strength and compression resistance and can meet certain structural requirements.

5.easy to carry out subsequent treatment: because the black retreat square tube is not surface galvanized or coated, easy to carry out subsequent hot-dip galvanizing, painting, phosphating and other treatments, in order to improve its anti-corrosion ability and appearance.

6.economical and practical: compared with some after surface treatment of the square tube, black retreat square tube production costs are lower, the price is more affordable, suitable for some of the appearance of the application of the scene does not require high.

Application areas of black annealed pipe

1.Building structure: black receding steel tubes are commonly used in building structures, such as structural supports, frames, columns, beams and so on. They can provide strength and stability and are used in the support and load-bearing parts of buildings.

2.Mechanical Manufacturing: Black annealed steel pipes are widely used in mechanical manufacturing industry. They can be used to make parts, racks, seats, conveyor systems and so on. Black annealed steel pipe has good workability, which is convenient for cutting, welding and machining operations.

3.Railway and highway guardrail: Black exit steel pipe is commonly used in railroad and highway guardrail system. They can be used as columns and beams of guardrail to provide support and protection.

4.Furniture Manufacturing: Black exit steel pipes are also widely used in furniture manufacturing. They can be used to make tables, chairs, shelves, racks and other furniture, providing stability and structural support.

5、Pipes and pipelines: Black receding steel pipes can be used as components of pipes and pipelines for the transportation of liquids, gases and solid materials. For example, it is used for industrial pipelines, drainage systems, natural gas pipelines and so on.

6.Decoration and interior design: black retired steel pipes are also used in decoration and interior design. They can be used to make home decorations, display racks, decorative handrails, etc., giving the space a sense of industrial style.

7.other applications: In addition to the above applications, black exit steel pipe can also be used in ship construction, power transmission, petrochemical and other fields.

These are only some of the common application areas of the black retreat steel pipe, the specific use will vary according to different industries and specific needs.