TestingTypeStandardRange
Visual InspectionNDTStandard
DimensionalNDTStandard
Material IdentificationNDTE1476Standard
Tensile StrengthDestructiveA370Standard
Flattening TestDestructiveA370Standard
Flare TestDestructiveA370Standard
Flange TestDestructiveA370Standard
Reverse BendDestructiveA370Standard
HardnessDestructiveA370Standard
Eddy Current TestNDTE309Standard
Ultrasonic TestNDTE213Option
Hydrostatic TestNDTA1016Option
Corrosion TestDestructiveA262-EOption

Non-Destructive Tests

  • Visual inspection
  • Eddy current test
  • Ultrasonic test
  • Hydrostatic test
  • PMI testing
  • Hardness test

Destructive Tests

  • Flattening test
  • Flaring test
  • Flange test
  • Bending test
  • Impact test
  • Intergranular corrosion test

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.

澳门凯发娱乐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
澳门凯发娱乐– 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

澳门凯发娱乐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

澳门凯发娱乐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.