Excellent OD / ID Controlled Special Steel Pipe Cold Drawn Shaped Steel Tubes GB/T 3094
China leading manufacturers and suppliers of Special Pipes, and we are specialize in Engineering Special Steel,Elliptical Steel Tube,Triangle Steel Tube, Profile Steel Tube,Profile Steel Pipe,etc.
TORICH is specialized in producing and manufacturing profile steel pipes in China, and we can make different shapes of Profile Steel Tubes according to customers drawing and design.
Seamless Special Pipes/special pipe,profile steel pipe, Seamless Special Pipes are produced by Seamless Cold Drawn with Special Mandre and Die to achieve specific shapes for different applications,
like Agricultural Parts, Machinery Parts, Auto Parts, Steering Drive Shaft, profile steel tube,High Pressuer Boilers etc
Seamless Rectangle Steel Tubes,
Seamless Rectangle Steel Pipes,
Seamless Square Steel Tubes,
Seamless Square Steel Pipes,
Seamless Omega Steel Tube,
Seamless Omega Steel Pipes,
Seamless Hexagonal Steel Tube
Outside Hexagonal and Inside Round Steel Tube,
Outside Round and Inside Hexagonal Steel Tube,
Seamless Elliptical Steel Tube,
Seamless Oval Steel Tube,
Multi Lead Rifle (MLR) Steel Tube
Steel Grade:
10#/ 20#/ 35#/ 45#/ Q195/ Q215/ Q235/ Q295/ Q345/ Q390
Application:
Used in structural parts, tool and machinery parts
Production method:
Cold drawn
Tube Type:
Seamless tube according to the Chinese standard GB/T 3094, or welded tube according to customers' request
Tolerance:
According to the following tables, or according to customers` request.
| Tolerance for the width |
| Size(mm) | Tolerance(mm) |
| General | High Grade |
| Width A / B | ≤30 | ±0.30 | ±0.20 |
| >30-50 | ±0.40 | ±0.30 |
| >50-75 | ±0.80%A ±0.80%B | ±0.70%A ±0.70%B |
| >75 | ±1%A ±1%B | ±0.8%A ±0.8%B |
| Tolerance for wall thickness |
| Size(mm) | Tolerance(mm) |
| General | High Grade |
| Width A / B | ≤1.0 | ±0.18 | ±0.12 |
| >1.0-3.0 | +15% WT -10% WT | +12.5% WT -10% WT |
| >3.0 | +12.5% WT -10% WT | ±10% WT |
Edge bumpiness for the Tube:
According to the following tables, or according to customers` request.
| Edge bumpiness |
| Size(mm) | Tolerance(mm) |
| General | High Grade |
| Width A / B | ≤30 | 0.20 | 0.10 |
| >30-50 | 0.30 | 0.15 |
| >50-75 | 0.80% | 0.50% |
| >75 | 0.90% | 0.60% |
Bending:
For General tube, the bending should be ≤4.0mm/m, and the total straightness should be ≤0.4%.
For High Grade tube, the bending should be ≤2.0mm/m, and the total straightness should be ≤0.2%.
Mechanical Property:
| Steel Grade | Tensile Strength MPa | Yield Strength MPa | Elongation % |
| No less than |
| 10 | 335 | 205 | 24 |
| 20 | 390 | 245 | 20 |
| 35 | 510 | 305 | 17 |
| 45 | 590 | 335 | 14 |
| Q195 | 315 | 195 | 22 |
| Q215 | 335 | 215 | 22 |
| Q235 | 375 | 235 | 20 |
| Q295 | 430 | 295 | 22 |
| Q345 | 510 | 345 | 21 |
| Q390 | 530 | 390 | 18 |
Shape of ends:
Both ends of the pipe should be cut to a complete end surface perpendicular to the axis and burs shall be removed from the ends.
Delivery condition:
Cold Drawn, heat treatment is also acceptable.
Product Images:
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