Mechanical Tube Manufacturing and Features
Mechanical tubes can be produced in straight random lengths or in specified fixed lengths. Our seamless tubes, crafted with precision, are manufactured through a cold-drawing process (drawn on mandrel), ensuring close dimensional tolerance with a smooth internal and external finish. To achieve desired mechanical properties, the tubes undergo heat treatments such as normalizing, stress relieving, annealing, and tempering according to specific customer requirements or material grades. Our production process is stringent to meet exacting industry standards, and we use tungsten carbide dies and mandrels to produce these tubes with high precision.
To achieve straightness as per industry codes, a multiple-roll straightening machine is employed, ensuring an accuracy level of up to 1mm per 1000mm straightness. Our quality checks are rigorous, and we prioritize protective packaging (including special 4-layer packing for exports) to ensure that the material reaches customers in prime condition.
Our mechanical tubes are designed with a finish and precision that enables them to go straight into the honing process for further customization.
Compliance with International Standards
We manufacture these mechanical tubes according to various international standards to ensure quality and reliability. Some of the standards include:
- EN 10305-1 E215
- EN 10305-1 E235
- EN 10305-1 E355
- DIN 2391 ST35
- DIN 2391 ST45
- DIN 2391 ST52
Final Delivery Conditions
The mechanical tubes are available in different final delivery conditions to meet diverse requirements:
| Designation | Symbol | Description |
| Cold Drawn / Hard | +C | No final heat treatment after the last cold drawing process |
| Cold Drawn / Soft | +LC | A suitable drawing process follows the final heat treatment |
| Cold Drawn and Stress Relieved | +SR | Stress relief heat treatment follows the final cold drawing process |
| Annealed | +A | Tubes are annealed after the last cold drawing |
| Normalized | +N | Tubes are normalized after the last cold drawing operation |
We are equipped to manufacture mechanical tubes up to 15 meters in length, with a maximum outer diameter of 150mm and wall thickness up to 12.7mm. Our focus on precision and adherence to strict standards ensures that our mechanical tubes meet the most demanding industry requirements.
Contact Krystal Mechanical Tubes: Krystal Global Engineering Limited For inquiries, call +91-7208489863 or email: [email protected].
Hydraulic steel Tubing , Cold Drawn, Hot Rolled, Finished Seamless Tubes, Cold Rolled, Alloy Steel Tubing, Drawn over mandrel, Stainless Steel, Galvanized Tubing, Stainless Steel Tubing, Structural Steel Tubing.