Quality has brought prosperity to Tube Tech. High product quality is an absolute priority for us and this constitutes a competitive advantage as it sets us apart from our competitors and hence makes a significant contribution towards securing and extending our market position.
A determination to settle for nothing less than excellence is the foundation on which our company operates. Our stringent quality practices ensure that every product meets the industry's highest production standards. The products and services we offer not only meet the quality requirements of our customers but actually exceed them.
It is the stringent regime of quality controls and procedures established at Tube Tech that gives its products the critical advantage in the industry. Strict process requirements and continuous monitoring throughout the production process minimizes the range of possible deviations in the final output. The works have been equipped with duly calibrated reliable testing and measuring equipment for measurement of dimensions, destructive and non-destructive testing which include:
The flaring test serves to establish the forming behaviour of tubes or pipes which is expanded to a specific degree. This flaring test is carried out in conformity with the code requirements. The specimen to be tested is expanded in a press to the degree specified. Defects which occur as result of this process are not permissible.
Samples from each lot are tested to ensure that the hardness of the tube is within permissible limits.
The tensile test specimen serves to determine the strength and ductility characteristics i.e. yield strength, tensile strength and elongation. Tensile tests are normally carried out at room temperature according DIN, ASTM, BS, IS and other common standards.
Flattening test mainly serves to detect microscopic internal and external flaws. It involves compressing a tube section between two planes placed parallel to a predetermined distance. Incipient cracks and internal or external defects which occur as result of this process are not permissible.
Each tube is compulsorily subjected to Eddy Current Testing to eliminate the possibility of any surface defects the finished tubes. We have inhouse facility of an offline to Eddy Current Testing having capacity to test tubes from 5 mm to 42 mm tube diameter. Our quality personnel are NDT level II certified, properly trained & qualified to conduct Eddy current testing. We have documented procedure for ECT which is duly certified by NDT Level III officer. We welcome Customer OR their deputed inspection agencies for witness of ECT.
Tubes and pipes produced at Tube Tech are subjected to 100% hydro testing as per the code requirements. Hydrostatic Testing can be carried out at pressures upto 120 kg /cm sq. The test pressure is achieved using high pressure Triple Plunger pumps. If specified, customers or their deputed inspection agencies can witness 100% hydro testing at our plant.
For thin wall tubes Pneumatic Testing (Air under water) is done at up to 450 psi air pressures to check for any leakages in the tube.
Dimensions of the Finned Tubes such as Fin Depth, Root Diameter, Thickness of Fin, Root Wall Thickness and Wall Thickness under Fins are checked with Profile Projector.
All products at Tube Tech are subjected to 100% visual inspection before packing.
We welcome inspection of our product quality and its adherence to the given standard from any Third Party Inspection Agency. We regularly work with inspection agencies like BVIS, TUV NORD, TUV SUD, IRS, QUEST, ICS, NCS, Lloyd’s etc.
Quality Assurance System implemented at Tube Tech covers all production stages right from the raw material, re-drawing, annealing, till the final product is ready for dispatch. The elements of the quality assurance system correspond to the requirements of national and international standards, as well as customer’s own Quality Assurance requirements.
The Quality control department is independent of manufacturing shop. All tests are carried out by trained quality personnel in compliance with the guidelines of the Quality Assurance System. Depending upon the intended application and technical delivery conditions or customer’s specifications, a variety of specific tests can be carried out to ensure that highest quality standards are maintained. Also, at the end of this meticulously uncompromising quality checks.
Process controls & checks across the production cycle
| Sr. No. | Process | Characteristics to be checked | Measuring Instruments | Quantum of Checks |
|---|---|---|---|---|
| 1 | Raw Material / Mother Tube Inspection | Dimensions Appearance |
Micro Meter Visual |
Random Sampling Random Sampling |
| 2 | Swaging | Swage degree & Length | Visual | Random Sampling |
| 3 | Drawing / Intermediate Cutting | Dimensions Surface / Length |
Vernier / Micro Meter Visual / Measuring Tape |
Random Sampling Random Sampling |
| 4 | Intermediate Annealing | Drawability | Visual | Random Sampling |
| 5 | Further Re-drawing / Final Drawing | Dimensions | Vernier / Micro Meter | Random Sampling |
| 6 | Physical & Mechanical Test | Tensile Strength / Yield Strength / Elongation / Hardness / Flaring / Flattening | UTM, Hardness Tester Etc. | Random Sampling – Lot wise |
| 7 | Straightening | Dimensions Straightness |
Micro Meter Visual & Measurement |
Random Sampling Random Sampling |
| 8 | Finish Cutting | Length | Measuring Tape | 100% |
| 9 | Deburring | Burrs on ends | Visual | 100% |
| 10 | Inspection |
Dimension – Outer Dia, Wall thickness Length Surface Eddy Current Test Hydro Testing (when required) Pneumatic Testing (when required) |
Vernier / Micro Meter Measuring Tape Visual Offline ECT Machine Hydro Test Machine Pneumatic Test Machine |
10% 10% 100% 100% 100% 100% |
| 11 | Final Annealing (if required) | Temperature Speed |
Thermo Couple Speed Controller |
Lot Wise Lot Wise |
| 12 | Further Processing (where applicable) – Finning / Bending / U Bending / End Forming (sleeves / rivets etc) | Dimensions Leakage Fin Dimensions |
Vernier, Micrometer, Measuring Tape, bend angle, orientation Hydrostatic / Pneumatic Testing M/c Profile Projector |
10% to 100% (as required) Random Sampling Random Sampling |
| 13 | Packing | Marking & Packing | As Per Customer Requirement | 100% |
Industry-leading expertise backed by decades of manufacturing excellence
ISO certified manufacturing with rigorous quality control at every step
Efficient logistics network ensuring on-time delivery worldwide
Serving clients across 50+ countries with local support
Tailored manufacturing to meet your specific requirements
All products meet international standards and regulations
Continuous R&D for cutting-edge manufacturing techniques