34CrMo4 Seamless Alloy Steel Tube for CNG Cylinders 356mm OD x 7.4mm Wall Thickness 12m Length
Price:
0.95 USD/KG
MOQ:
100KGS
Delivery Time:
7 Working Days
Brand:
MITTEL
Product Description
34CrMo4 Seamless Alloy Steel Tube for CNG Cylinders
High-quality 34CrMo4/1.7220 alloy steel seamless tubes specifically engineered for compressed natural gas (CNG) cylinder applications. These tubes offer exceptional mechanical properties and dimensional precision for demanding industrial use.
Applications
Designed for automotive CNG cylinder installations, fire protection systems, medical equipment, and various industrial applications requiring high-pressure gas containment.
Quality Standards
- EN 10297-1: Seamless Circular Steel Tubes for Mechanical and General Engineering
- GB/T 8162: Seamless Steel Tubes for Structural Purposes
Chemical Composition
34CrMo4 Composition (%)
Carbon: 0.30-0.37, Silicon: ≤0.40, Manganese: 0.60-0.90, Phosphorus: ≤0.035, Sulfur: ≤0.035, Chromium: 0.90-1.20, Molybdenum: 0.15-0.30
35CrMo Composition (%)
Carbon: 0.32-0.40, Silicon: 0.17-0.37, Manganese: 0.40-0.70, Phosphorus: ≤0.035, Sulfur: ≤0.035, Chromium: 0.80-1.10, Molybdenum: 0.15-0.25
Mechanical Properties
| Condition | Tensile Strength Rm (MPa) | Yield Strength R2 (MPa) | Elongation A (%) |
|---|---|---|---|
| Q+T | ≥900 | ≥650 | ≥12 |
Dimensions and Tolerances
| Outer Diameter | OD Tolerance | Wall Thickness/OD Ratio | Wall Thickness Tolerance | Length | Length Tolerance |
|---|---|---|---|---|---|
| ≤219mm | ±1% or ±0.5mm (greater) | Any | ±12.5% or ±0.4mm (greater) | ≤6000mm | -0mm, +10mm |
| >219mm | ±1% | ≤0.025 | ±20% | 6000-12000mm | -0mm, +15mm |
| >219mm | ±1% | 0.025-0.050 | ±15% | ≥12000mm | Minus not allowed |
| >219mm | ±1% | ≥0.050 | ±12.5% | / | / |
Production Capacity
3,000 tons per month manufacturing capacity to meet large-scale project requirements.
Quality Testing
- Chemical analysis
- Metallographic examination
- Mechanical analysis
- Ultrasonic testing
- Magnetic particle testing
- Impact testing
- Hardness testing
- Surface quality inspection
- Dimensional verification
Packaging
Four to five pieces per bundle, with minimum bundle weight of 2,000kg and maximum bundle weight of 5,000kg for secure transportation.
Certification
EN 10204/3.1 Mill Test Certificate provided with complete chemical composition, mechanical properties, and testing results documentation.
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Get in Touch
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Company
JIANGSU MITTEL STEEL INDUSTRIAL LIMITED
Location
NO.288,YOUYI ROAD ,XI SHAN DISTRICT,WUXI CITY,CHINA
Contact Person
Gao Ben