Midwal Engineering assures the integrity of your products and weldments through the following:



Weld Testing

Welding and brazing are techniques used to join metals. Welding Procedure and Welder Performance Qualification tests are assessed through some or all of the following tests: 

  • Tensile Test & Bend Test 
  • Nick Break Test & Charpy Impact Test 
  • Hardness Test  & Macroetch 
  • Microstructure of Weld, HAZ & Base Metal  
  • Chemical Analysis of Weld, HAZ & Base Metal  
  • Corrosion Test 

We can test to ASME Section IX, AWS D1.1, API Std 1104, ISO  15614, DNV F101, ABS Rules and other client specific standards

Failure Analysis

Failure Analysis

Failure analysis is a multi-faceted, holistic approach to determine how and why a material or product failed. It is conducted to assist in the improvement of product design, the refinement of operational limits, and the implementation of corrective actions.

Based on the type of failed component and its history, Midwal Engineering will perform a root cause analysis to  identify the cause of failure. Typically, a failure analysis investigation begins with a collection of relevant background information on the failed part, such as environmental and operating conditions, service records, design details and material specifications. This helps to identify potential threats to the integrity of the component. The scope of testing and analysis is defined and used to collect data which is ultimately used to arrive at a conclusive cause of failure.

Material Verification and Identification

Material Verification and Identification

The quality of materials is crucial to the quality of products and the safety of systems. Chemical analysis is performed to  measure  the  precise  elemental  composition  of materials.  This  is  used  for  specification  conformance checks  or  to  identify  the  elemental  composition  of  an unknown material.

Midwal  Engineering  performs  chemical  analysis  of metallic materials using the following methods:

  • Optical Emission Spectroscopy (OES): Performed with a solid sample that is atomized by an arc-spark discharge.  The  compositional  elements  are excited through the burn process and give off different  wavelengths  of  light.  Each  separate element’s  wavelength  is  read  by  the spectrometer  and  reported  for  alloy determination.

Test  Methods  /  Specifications  are  ASTM  E415, ASTM E1086


  • X-Ray Fluorescence (XRF) for Positive Material Identification (PMI):  A non-destructive technique for alloy identification. X-rays are emitted from the  analyzer and strike the sample, knocking electrons  out of the innermost orbitals. Electrons from outer  orbitals move into the vacated spots to stabilize the  newly created ion, and in the process emit energy (a secondary X-ray photon) that is characteristic to  each specific element.  This phenomenon is called  fluorescence.

Test Method / Specification is ASTM E572, API RP  578

Whether you seek to verify a material certification or to  obtain  a  detailed  breakdown  of  an  unknown  material,   Midwal Engineering will provide a Certified Report listing   the  elements  identified  and  compared  to  your   specification, if provided.  We can also identify unknown  materials to major material specifications.

Fastener Testing


Fastener Testing


Fastener testing allows the determination of the mechanical properties of fasteners. Test specimen can either be a machined specimen or a full-size product.

Test Methods / Specifications are ASTM F606, ISO 898

Rebar Testing


Rebar Testing


Steel reinforcing bar (rebar) is embedded in concrete to  improve the overall strength of the concrete that surrounds it. Mechanical testing is then necessary to determine if the rebar meets its  published  specifications, ensuring the quality of the product.  

Midwal Engineering can test rebars for tensile, bend and chemical composition according to ASTM A615, BS 4449 and ISO 6935