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34CrMo/34CrMo4 Seamless Steel Tube
We are supplying thin wall thickness seamless steel pipe by material 34CrMo/34CrMo4.
This kind of pipe is widely used for making gas cylinder.
34CrMo steel gas cylinders are specialized steel cylinders manufactured with stringent specifications. These requirements typically include a lower carbon content and strict control over sulfur and phosphorus contents to ensure the material achieves high strength while maintaining excellent toughness and impact energy. Additionally, these cylinders undergo 100% non-destructive testing to guarantee their integrity and safety.
Standards: GB18248 – 2000
OD: Φ50-325mm; Wall Thickness: 3-55mm;
OD Tolerance: ±0.75%;
Wall Margin: -10%—+12.5%;
Transverse Slope: ≤2mm;
Straightness: 1mm/1m;
Inside Diameter Roundness: ≤80% of OD Tolerance;
Surface Quality: No cracks, folding, delamination, stammer;
Product Categories: Seamless Steel Tubes for High Pressure Vessels;
Usages: Suitable for various fuel, hydraulic, trailer, station gas bottles;
Steel Grade: 34CrMo4, 34CrMo, 30CrMo, 34Mn2V, 35CrMo, 40CrMo, 42Crmo, 42Crmo4, 37Mn, 16Mn;
Process: Cold Drawn/Cold Rolled/Hot Drawn/Hot Rolled;
Surface: Bare, Black Painting, Galvanized, Coating;
Package: Bundles, Bulk, PVC Bags, Plywood Case.
| EU EN | USA | Germany DIN | Japan JIS | China GB | Sweden SS | Italy UNI |
| 34CrMo4 | 4135 | 34CrMo4 | SCM435H | 35CrMo /ZG35CrMo | 2234 | 35CrMo4 |
| C | Si | Mn | P | S | Cr | Mo |
| 0.3-0.37 | max 0.4 | 0.6-0.9 | max 0.025 | max 0.035 | 0.9-1.2 | 0.15 -0.3 |
| Nominal diameter (mm) | to 16 | 16-40 | 40-100 | 100-160 | 160-250 | ||
| Rm -Tensile strength (MPa)(+QT) | 1000-1200 | 900-1100 | 800-950 | 750-900 | 700-850 | ||
| Nominal thickness (mm): | 0.3-3 | ||||||
| Rm -Tensile strength (MPa)(+A) | 600 | ||||||
| Nominal thickness (mm) | to 8 | 8-20 | 20-50 | 50-80 | |||
| Rm -Tensile strength (MPa)(+QT) | 1000 | 900 | 800 | 750 | |||
Applications of 34Crmo,34Crmo4,35Crmo Seamless Alloy Steel Tube
These materials are utilized in critical structural components that operate under high pressure, including gas cylinder pipes, vehicle transmission parts, and engine components. They are also essential in the manufacture of turbogenerator rotors, spindles, heavy-duty drive shafts, and large cross-section parts, where reliability and durability under stress are paramount.
Our main business range is listed as follows:
- Carbon Seamless Steel pipe/tube
- Hydraulic cylinder tube(Honed tube)
- Hard chrome plated rod/bar/shaft(Piston rod)
- Ready to honed tube
- ST52 Honed tube
- Hydraulic Cylinder Barrel