35CrMo Special-shaped Tube
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PRODUCT DETAILS
Description
Special-shaped steel pipe is a non-circular cross-section profile made from seamless steel pipes through cold drawing, cold rolling or mold forming. It has high dimensional accuracy, good mechanical strength and stable performance. Common shapes include square, rectangular, oval, D-shaped, hexagonal, plum-shaped and other customized sections. Materials include 10#, 20#, 45#, 40Cr, 35CrMo, 42CrMo and other alloy structural steels. It is widely used in construction machinery, hydraulic cylinders, automobiles, agricultural machinery, transmission parts and mechanical structures with the characteristics of space saving, reasonable stress and convenient assembly.
ASTM 4135 is a medium-carbon chromium-molybdenum alloy structural steel, belonging to the 41xx series of quenched and tempered steels. Its carbon content is slightly lower than that of 4140. It has core advantages such as high strength, high toughness, good quenching and tempering properties, good fatigue resistance, and good temper stability. It is a general-purpose medium-high strength alloy structural steel. It is used in mechanical manufacturing, automotive industry, and petrochemical industry.
| Product Name | ASTM 4135 Special Shaped Steel Tube / Profile Pipe / Non-Round Tube | |||||||
| Type | Square, Rectangular, Oval, Flat, Hexagonal, Octagonal, D-Shape, Triangular, Custom Profiles | |||||||
| Outer Dimensions | Square/Rect: 10x10mm to 500x500mm; Oval/Flat: Custom width/thickness combos; Hex/Oct: Across-flats 10mm - 200mm | |||||||
| Wall Thickness | 0.8mm - 50mm (Uniform or variable thickness depending on profile complexity) | |||||||
| Length | Standard: 6m, 12m; Custom 1-18m; Coiled (for small thin-wall profiles) | |||||||
| Standard | ASTM A500, ASTM A513, EN 10219, EN 10210, GB/T 3094, JIS G3466, ISO 10793 | |||||||
| Material Grade | Q195, Q235, SS400, A36, 10#, 20#, 45#, 16Mn, 304/316 Stainless, Aluminum Alloys | |||||||
| Surface Finish | Hot-Dip Galvanized, Pre-galvanized, Black (Pickled & Oiled), Bright Annealed, Powder Coated, Painted, Polished (Stainless) | |||||||
| Tolerance | OD/Dimensions: ±0.5% to ±1.0%; Wall Thickness: ±10% to ±12.5%; Corner Radius: Customizable | |||||||
| Scope of Application | Structural frameworks (buildings, bridges), automotive chassis, furniture (chairs, tables), handrails, greenhouse structures, agricultural machinery, decorative architecture, fitness equipment | |||||||
| Certificate | Mill Test Certificate (EN 10204 3.1), ISO 9001, SGS, CE, PED | |||||||
| Production Technology | ERW (Electric Resistance Welded), Seamless Cold Drawing, Laser Welding (for complex shapes), Hot Forming | |||||||
| Edge Processing | Plain End, Cut to length, Deburred, Miter Cut (45°/90° for framing), Punching, Drilling | |||||||
Chemical Composition
| Chemical Composition (%) | ||||||||
| Material | C | Mn | Si | P | S | Mo | Fe | Cr |
| ASTM 4135 | 0.33–0.38 | 0.70–0.90 | 0.15–0.35 | ≤ 0.035 | ≤ 0.040 | 0.15 - 0.25 | Balance | 0.8-1.1 |
Physical Properties
| Physical Properties (Typical Room Temperature Values) | ||||||||
| Material | Density(g/cm³) | Elastic Modulus(GPa) | Linear Expansion Coefficient(20-100℃) | Thermal Conductivity(20℃, W/(m·K)) | ||||
| ASTM 4135 | 7.85 | 210 | 12.3×10⁻⁶ /℃ | 44 | ||||
Mechanical Properties
| Mechanical Properties (Hot Rolled / Normalized Condition) | ||||||||
| Material | Tensile Strength(MPa) | Yield Strength(MPa) | Elongation(%) | Brinell Hardness(HBW) | ||||
| ASTM 4135 | ≥ 985 | ≥ 835 | ≥ 12 | ≤229 | ||||
Inspection Items & Standards
| Inspection Items & Standards | ||||||||
| Inspection Type | Inspection Item | Qualification Requirement | ||||||
| Chemical Analysis | Full Elemental Analysis | Comply with Specified Composition Range | ||||||
| Mechanical Test | Tensile Test, Brinell Hardness Test | Meet Minimum Mechanical Property Requirements | ||||||
| Nondestructive Testing | Ultrasonic Testing, Eddy Current Testing | No Cracks, Inclusions, Laminations or Harmful Defects | ||||||
| Pressure Test | Hydrostatic Pressure Test | No Leakage or Deformation Under Specified Test Pressure | ||||||
| Dimensional Inspection | OD, WT, Straightness, Roundness | Comply with Precision Pipe Tolerance | ||||||
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APPLICATION FIELD
Energy Transmission
Construction Engineering
Energy Transmission
Power Equipment
Interior Decoration
Architectural Decoration
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