Black annealed steel pipe is an annealed steel tube with a black surface. Annealing is a metal heat treatment process, which refers to slowly heating the metal to a certain temperature, keeping it for a sufficient time, and then cooling it at an appropriate speed. The purpose is to reduce hardness, improve machinability; reduce residual stress, stabilize size, reduce deformation and crack tendency; refine grain, adjust structure, and eliminate structure defects.
Black annealed steel pipes are widely used in the field of structural pipes, and are often used in construction, furniture manufacturing, mechanical structures, etc. Its standards include ASTM A500, BS1387, GB3091, ASTM A53, EN39, and the materials include Q345A, Q345B, 20#, 45#, Q235, SS400, etc., and the shapes include round, square and rectangular.
- Product Name: Black Annealed Steel Pipe/Tube
- Standard: ASTM A500, BS1387, GB3091, ASTM A53 , EN39
- Material: Q345A, Q345B, 20#, 45#, Q235, SS400
- Type: Round,Square and Rectangular
- Application: Structure Pipe
- Certification: CE
- Brand: AIYIA
Round Black Annealed Steel Pipe
| Out Daeter (mm) | Wall Thicknes (mm) | Length (mm) |
| 21.3 | 0.6-3.00 | 0.3-12 |
| 26.9 | 0.6-3.00 | 0.3-12 |
| 33.4 | 1.0-3.0 | 0.3-12 |
| 42.3 | 1.0-4.0 | 0.3-12 |
| 48.3 | 1.0-4.0 | 0.3-12 |
| 60.3 | 1.5-4.0 | 0.3-12 |
| 76.1 | 1.5-4.0 | 0.3-12 |
| 88.9 | 1.5-9.5 | 0.3-12 |
| 114.3 | 2.0-9.5 | 0.3-12 |
| 141.3 | 3.0-9.5 | 0.3-12 |
| 168.3 | 3.0-12.0 | 1.0rn-12 |
| 219.1 | 3.2-12.0 | 1.0-12 |
| 273 | 3.2-12.0 | 1.0rn-12 |
| 323.8 | 6.0-15.0 | 1.0-12 |
| 355.6 | 8.0-15.0 | 1.0-12 |
| 406.4 | 8.0-20.0 | 1.0-12 |
Square Black Annealed Steel Pipe
| Size(mm) | Wall Thicknes(mm) |
| 16×16 | 0.4~1.5 |
| 18×18 | 0.4~1.5 |
| 20×20 | 0.4~1.5 |
| 25*25 | 0.6-2.0 |
| 30×30 | 0.6-4.0 |
| 34*34 | 1.0-2.0 |
| 35*35 | 1.0~4.0 |
| 38×38 | 1.0~4.0 |
| 40×40 | 1.0~4.5 |
| 44×44 | 1.0~4.5 |
| 45×45 | 1.0~5.0 |
| 50×50 | 1.0~5.0 |
| 60×60 | 1.5~5.0 |
| 70×70 | 2.0-6.0 |
| 75×75 | 2.0-6.0 |
| 80×80 | 2.0-6.0 |
| 85-85 | 20-6.0 |
| 95*95 | 2.0-8.0 |
| 100×100 | 2.0-8.0 |
| 120×120 | 4.0-8.0 |
| 150×150 | 6.0~10.0 |
| 180×180 | 6.0~12.0 |
| 200×200 | 6.0~12.0 |
| 220×220 | 6.0~14.0 |
| 250×250 | 6.0~14.0 |
Rectangular Black Annealed Steel Pipe
| Size(mm) | Wall Thicknes(mm) |
| 10×20 | 0.6~1.5 |
| 14×21 | 0.6-1.5 |
| 15×30 | 1.5-1.5 |
| 15×38 | 0.6-1.5 |
| 20×30 | 0.6-2.0 |
| 20×40 | 0.8-2.0 |
| 20×50 | 1.0-2.0 |
| 22×35 | 0.9-2.0 |
| 25×40 | 0.9~3.75 |
| 25×65 | 1.0-2.0 |
| 30×40 | 1.0-3.75 |
| 30×45 | 1.0-3.75 |
| 30×50 | 1.0~4.0 |
| 30×60 | 1.0-4.5 |
| 40×50 | 1.0~4.5 |
| 40×60 | 1.0~5.0 |
| 40×80 | 1.5~5.0 |
| 40×100 | 2.0~5.0 |
| 50×60 | 2.0~5.0 |
| 50×80 | 2.0-5.0 |
| 50×100 | 2.0~8.0 |
| 60×80 | 2.0~6.0 |
| 80×100 | 2.0~8.0 |
| 120×60 | 2.5~10 |
| 120×80 | 2.5~10 |
For more information on tube materials, please contact us.