Quality Control

All ANTONG products are manufactured under strict process control and monitored throughout the production process. They are subjected to a number of checks to ensure total control conformity to specifications.

Chemical Analysis

Chemical Test as per required quality.

Corrosion Test

Corrosion test is conducted only when specially requested by the client.

Destructive/Mechanical Testing

Tensile, Hardness, Flattening, Flare, Flange and Reverse-bend tests are carried out in full compliance with relevant standards, i.e. ASTM A-1016 and A-999 norms. This ensures trouble-free expansion, welding and use at customers end.

Eddy Current Testing

To detect homogeneities in subsurface, eddy current testing is carried out using Flaw-mark Testing System.

Hydrostatic Testing

100% Hydrostatic Testing is carried out according to ASTM - A 1016 norms to check tubes for leakage.

Making

To ensure complete identification and traceability, all the information as required by the standards i.e. Brand Name, Size, Grade, Specifications, heat No., / Lot No. is marked on all the pipes and tubes by using the latest inkjet marking machine.

Visual Inspection

After passivation, every single length of tubes and pipes is subjected to a thorough visual inspection by trained staff to detect surface flaws and other imperfections.

Air under Press Test

Tubes are internally pressurized with clean and dry compressed air and being submerged in clear water to check any evidence of air leakage.

Supplementary Test

IGC Test (Inter Granular Corrosion Test)
Micro-Structure Analysis
Macro
Radiography Test
Ultrasonic Test
Liquid Penetrate Test
Eddy Current
Hot Tensile

Note: Supplementary & Non-Destructive Tests are conducted only when specially requested by the client.