Our factory's round pipe is made by cold rolled black annealed steel strip, sharing the good reputation and market in US, Belgium, U.K, Germany, Ethiopia etc.
Cold Rolled Black Annealed Round Pipe
Cold Rolled Black Annealed Window Section Pipe
Executive Standard: ASTM, DIN, JIS, GB
Grade: Q195-Q235
Cold Rolled Black Annealed Round Pipe
Executive Standard: ASTM, DIN, JIS, GB
Grade: Q195-Q235
Cold Rolled Black Annealed Square Pipe
Executive Standard: ASTM, DIN, JIS, GB
Grade: Q195-Q235
Cold Rolled Black Annealed Rectangler Pipe
Executive Standard: ASTM, DIN, JIS, GB
Grade: Q195-Q235
Grade: Q195-Q235
Product | Outside Diameter | Thickness | ||
Inches | MM | Inches | MM | |
Black annealed pipes | 0.3150-3.9370 | 10-100 | 0.0118-0.0787 | 0.3-2.0 |
Cold Rolled Black Annealed Square Pipe
Executive Standard: ASTM, DIN, JIS, GB
Grade: Q195-Q235
Product | Outside Diameter | Thickness | ||
Inches | MM | Inches | MM | |
Black annealed pipes | 0.3937²-2.3622² | 10²-60² | 0.0118-0.0787 | 0.3-2.0 |
Cold Rolled Black Annealed Rectangler Pipe
Executive Standard: ASTM, DIN, JIS, GB
Grade: Q195-Q235
Product | Outside Diameter | Thickness | ||
Inches | MM | Inches | MM | |
Black annealed pipes | 0.2362*0.3937-1.9685*3.9370 | 6*10-50*100 | 0.0118-0.0787 | 0.3-2.0 |
Bright pipes | 0.2362*0.3937-1.9685*3.9370 | 6*10-50*100 | 0.0118-0.0787 | 0.3-2.0 |
Cold Rolled Black Annealed Window Section Pipe
Executive Standard: ASTM, DIN, JIS, GB
Grade: Q195-Q235
Product | Outside Diameter | Thickness | ||
Inches | MM | Inches | MM | |
Black annealed pipes | T/Z/L 0.9843-1.4960 | T/Z/L 25-38 | 0.0236-0.0787 | 0.6-2.0 |
Cold rolled steel is metal that has been made by rolling. When they cold roll steel, it is to get a better finish or more strength. Cold rolled steel is made by passing the steel through a number of rollers after the metal has cooled from initial production. The steel is reduced in thickness incrementally as it passes through the rollers. Cold rolled steels tend to have lower carbon content than hot rolled steels, making them more durable. They can also be rolled to more specific dimensions due to the lack of shrinkage that occurs with hot rolled steels. Cold rolled steels are typically rolled to have a matte appearance. They may also be painted, if it is called for, by removing the lubricants that are frequently applied prior to shipping.
We heat and cool the pipe in an inert atmosphere to inhibit oxidation; surface remains relatively bright.
Our Main Die Sizes:
Round Pipe | Square Pipe | Rectangle Pipe | Oval Pipe | |
φ11.8 | φ60 | 102 | 8*16 | 9.5*17 |
φ13 | φ63 | 122 | 8*18 | 10*20 |
φ14 | φ65 | 152 | 10*18 | 10*22.5 |
φ15 | φ67 | 162 | 10*20 | 11*21.5 |
φ16 | φ68 | 172 | 10*22 | 11.6*17.8 |
φ17.5 | φ70 | 182 | 10*30 | 12*23 |
φ18 | φ73 | 192 | 11*21.5 | 14*42 |
φ19 | φ75 | 202 | 11.6*17.8 | 14*50 |
φ20 | φ76 | 212 | 12*14 | 15*30 |
φ21 | φ80 | 222 | 12*34 | 16*22 |
φ22 | φ85 | 242 | 12*48 | 16*35 |
φ23 | φ100 | 252 | 12.3*25.4 | 16*45 |
φ24 | 25.42 | 13*23 | 20*40 | |
φ25 | 282 | 14*20 | 24.6*46 | |
φ26 | 28.62 | 14*72 | 30*60 | |
φ27 | 302 | 15*30 | 31.5*53 | |
φ27.5 | 322 | 15*88 | 40*12 | |
φ28 | 352 | 16*26 | 13.5*43.5 | |
φ28.6 | 372 | 17.5*15.5 | 20*38 | |
φ29 | 382 | 18*35 | 25*50 | |
φ30 | 402 | 17*37 | ||
φ31 | 452 | 19*38 | ||
φ32 | 482 | 20*30 | ||
φ33.5 | 502 | 20*40 | Egg 22*40 | |
φ34 | 22*25 | |||
φ35 | 22*26 | |||
φ36 | 25*38 | |||
φ37 | 25*30 | |||
φ38 | 25*40 | |||
φ39 | 25*50 | |||
φ40 | 27*40 | |||
φ42 | 30*40 | |||
φ43 | 30*50 | |||
φ44 | 30*60 | |||
φ45 | 30*70 | |||
φ47 | 40*60 | |||
φ48 | 45*75 | |||
φ50 | 40*80 | |||
φ50.8 | 50*100 | |||
φ52 | 35*78 | |||
φ54 | 15.5*35.5 | |||
φ56 | ||||
φ58 |