| Testing | Type | Standard | Range |
|---|---|---|---|
| Visual Inspection | NDT | Standard | |
| Dimensional | NDT | Standard | |
| Material Identification | NDT | E1476 | Standard |
| Tensile Strength | Destructive | A370 | Standard |
| Flattening Test | Destructive | A370 | Standard |
| Flare Test | Destructive | A370 | Standard |
| Flange Test | Destructive | A370 | Standard |
| Reverse Bend | Destructive | A370 | Standard |
| Hardness | Destructive | A370 | Standard |
| Eddy Current Test | NDT | E309 | Standard |
| Ultrasonic Test | NDT | E213 | Option |
| Hydrostatic Test | NDT | A1016 | Option |
| Corrosion Test | Destructive | A262-E | Option |
Non-Destructive Tests
- Borescope
- Chemistry Verification
- Cleanliness
- CMM
- Concentricity
- Eccentricity
- Eddy Current
- Fluid Dye Penetrant
- Heidenhain Wall Thickness
- Hydrostatic
- Laser Micrometer
- Liquid Dye
- Magnetic Particle
- Penetrant
- Pneumatic
- Surface Roughness
- Permeability
- Straightness
- Ultrasonic
- Wall Run Out
Destructive Tests
- Carbon Content
- Chemistry
- Elongation
- Flange
- Flare
- Flatten
- Grain Size
- Micro Hardness
- Microstructure
- Rockwell
- Tensile Test
- Ultimate Strength
- Yield Strength
Hydrostatic Testing
Nondestructive test (NDT) for strength and leaks. The test involves filling the tubing with deionized water until it reaches a specified hold pressure
Eddy Current Test
Eddy Current Testing (ECT) is a nondestructive test technique based on inducing electrical currents in the material being inspected and observing the interaction between those currents and the material. Eddy currents are generated by electromagnetic coils.
This method is the most versatile and cost-effective method and the preferred method for testing metallic tubes, it detects small, short, incomplete welds, and some subsurface and Inside Diameter conditions in stainless steel tube.
Eddy Current Is Applicable To Non-Ferrous Materials.
– Copper
– Brass
– Copper-Nickel
– 300 Series Stainless
– Titanium
– Inconel / Hastelloy
Tubes must be clean in order to avoid false signals or masked defects.
Fabrication flaws/indications for seam-welded tubes:
Raw Materials
– Laminations/inclusions
– Break marks
– Scratches
Seam Weld:
– Cracks
– Mismatch
– Inadequate deburring/rough edges at weld
– Weld darts
– Lack of penetration
Advantages
- High speed, fast
- Cost effective
- Repeatable examination
- Detects pits, cracks, wear, wall thinning and more
- Reliable data
Disadvantages
- Insensitive to Longitudinal Defects
- OD defects to be more easily found than ID defects
Eddy Current Testing is one important testing in achieving the perfect balance of efficiency and reliability for tubes.,
Flatten Test
This test is designed to test the transverse weld ductility on the exterior surface.
Reverse Flatten Test
This test was developed to test transverse weld ductility on the ID surface.
Reverse Bend Test
For austenitic stainless steels that are considered to have a greater ductility than others, this test is a higher strain version of the reverse flatten test.
Flange Test
This test, which starts out as a flaring operation, is the test for longitudinal weld ductility, primarily on the ID surface
Positive Material Identification （PMI）
The analysis of a metallic sample to identify the material grade. This is accomplished by measuring the % composition of its constituent elements and matching it to a database of known alloys.