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Seamless Carbon Steel & Alloy Steel Mechanical Tubes for High-Precision Engineering Applications
Inox Steel India
Inox Steel India is a leading manufacturer and exporter of ASTM A519 and EN 10297-1 seamless mechanical tubes used for machining, general engineering, automotive components, hydraulic parts, load-bearing assemblies, and fabrication requiring high strength and dimensional precision.
Mechanical tubes handle:
Our seamless carbon steel and alloy steel mechanical tubes are cold-drawn or hot-finished to ensure excellent straightness, internal smoothness, and uniform mechanical properties.
Mechanical tubes need:
ASTM A519 covers seamless carbon and alloy steel tubes extensively used in the American engineering industry.
EN 10297-1 covers seamless circular tubes for mechanical and engineering applications in Europe, ensuring tight tolerance, controlled chemical composition, and superior dimensional accuracy.
These materials are compatible with CNC machining, heat treatment, induction hardening, and welding within suitable carbon ranges.
1. Hot Rolling / Hot Finishing
Forms seamless hollows with high structural integrity.
2. Cold Drawing (CDS)
Improves strength, surface finish, and tolerances.
3. Heat Treatment
Annealed · Normalized · Quench & Temper · Stress Relieved
4. OD/ID Machining & Straightening
Achieves close tolerance control.
5. NDT Testing
Ensures tubes are defect-free and dimensionally correct.
| Application | Requirement | Industries |
| CNC machined components | Good machinability | Engineering |
| Rollers & shafts | High surface finish | Textile |
| Axle tubes | Strength & bending | Automotive |
| Bushings & sleeves | Machining stability | Machine tools |
| Light hydraulic parts | Medium pressure | OEMs |
| Application | Requirement | Industries |
| Drive shafts | High torsion | Automotive |
| Steering columns | Strength + lightweight | Mobility |
| Propeller shafts | Dynamic loading | Marine |
| Gear sleeves | Toughness | Transmission |
| Structural machine parts | High fatigue | Heavy Engineering |
| Grade | Condition | Price (INR/kg) | Price (USD/kg) | Typical Use |
| A519 1020/1026 | CDS | ₹95 – ₹155 | $1.25 – $2.00 | General machining |
| A519 4130/4140 | Q+T | ₹145 – ₹240 | $1.90 – $3.20 | High strength parts |
| EN 10297 E355 | CDS | ₹110 – ₹170 | $1.40 – $2.25 | European OEM |
| 42CrMo4 / 34CrMo4 | Q+T | ₹160 – ₹280 | $2.10 – $3.60 | Heavy-duty parts |
A519 is the American standard; EN 10297-1 is the European standard — both specify seamless mechanical tubes for engineering applications. 4130, 4140, 34CrMo4, and 42CrMo4 are preferred for their excellent strength, toughness, and fatigue resistance. Yes — Q+T, normalizing, annealing, and stress relieving are common. Absolutely — they offer excellent straightness, concentricity, and machinability. Yes — to GCC, Europe, Africa, USA, and South America. What is the difference between A519 and EN 10297-1?
Which grades are best for high-strength mechanical parts?
Can mechanical tubes be heat treated?
Are your tubes suitable for CNC machining?
Do you export mechanical tubes?