Distractive tests of pipe

Distractive tests confirm the mechanical requirements of the manufactured pipe.

In Distractive Testing- a sample from the actual material is cut to performed various tests.

The tensile test is done to check yield and ultimate tensile of the material. If required by the purchaser or by standard, high or low-temperature tensile test are also performed.

Bend test or Guided bend test are used to check integrity of weld joint.

Flattening test examines ability of plastic deformation in pipe.

Impact test / Charpy V-Notch Test, check the ability of material to withstand under low-temperature conditions.

Mechanical properties test by BV

Creep test is performed to check the long-term effect of continued temperature under constant load on steel.

Metallurgical Tests confirm the chemical requirements of material grades as per the applicable material standard.

Metallurgical Tests are normally known as Micro and Macro testing.

Micro Analysis or Chemical Analysis of Raw material, Product, and Weld ensures that all the alloying elements are within the range as specified in the material standard.

Impact test of EN10204 for German order in Haihao Group

Macro Analysis for Weld will check proper fusion of weld material with pipe material.

Here are some Special tests that also carried out on the material when it is going to be used in aggressive environments. These tests will ensure that pipe material is able to withstand in such aggressive environments also. Some of the tests are Grain size (AS & SS), IGC- Intergranular Corrosion Test(SS), Ferrite (SS), HIC- Hydrogen-induced Cracking, SSC- Sulfide Stress Corrosion Cracking, these tests are performed when it is asked by the purchaser in his specification.

Hydrostatic Test of a pipe is carried out to ensure that pipe is 100% leak proof. It also ensures the ability of pipe to withstand pressure.

Hydrostatic test for large diameter bend in Haihao Group

Hydro test pressure is calculated based on equation given in ASTM A530, this equation is based on three parameters Pipe OD, Pipe Thickness and Pipe Wall Stress.

Holding time for the hydro test is minimum 5 secs as per ASTM A530. Pressure is monitored by the computerized system.

For welded pipe, the test pressure should be held for a time, sufficient to permit the inspector to examine the entire length of the weld seam.

Hydrostatic test can be waived under certain conditions as set in the standard.

As a professional piping supplier,we not only supply high quality piping products,but also conduct strict quality inspection.If you want to know more about our products,please feel free to contact us.Email:sales@haihaogroup.com