Non Destructive Testing | Welding / Weld Testing and Certification

Design Engineering are specialists in Non Destructive Testing (NDT Testing) in New Zealand. We offer Radiography, Ultrasonic, Phase Array, Magnetic Particle and Visual Welding Inspections and Welder Qualications.

Starting in 1991 the Design Engineering team has over 100 years combined experience with the latest and best equipment for NDT and welding testing. This means we are one of the most efficient and experienced NDT inspection companies in New Zealand. You can be assured of first class service to look after your valuable assets, staff and inspection work.

For assistance in your next project contact one of our offices to discuss more.

Weld Testing

Third Party Weld & Fabrication Compliance Inspection
Structural Steel Weld inspection
Inspection Test Plans (ITP)
International steel fabrication compliance monitoring.
Certified Welding Inspection

Radiography including Gamma & X-Ray

Radiographic Examination of Metals

i. Welded Joints

Aluminium Alloys
Ferrous Metals

ii. Castings

Stainless Steel

Surface Methods

Penetrant Testing (fluorescent & Visible)

i. Water Washable Method

ii. Solvent Removable Method

Magnetic Particle Testing (fluorescent & Visible)

i. Magnetic Flow Method

Welded Joints
Forgings
Castings
Other Machined Products

ii. Current Flow Method

Welded Joints
Forgings
Castings
Other Machined Products

Welder Qualifications

Welding Qualification Examining Body Inspections required to verify compliance with the process for qualifying welders for fusion welding of steels in accordance with AS/NZS 2980

Welder qualifications in accordance with specifications such as:

API 1104
AS/NZS 1554 parts 1 to 6
AS/NZS 1665
AS/NZS 2980
AS/NZS 3992
ASME IX
AWS D1.1 BS
EN ISO 9606-1
BS EN ISO 15609-1
BS EN ISO 15614-1

Ultrasonics (UT) & Phase Array (PA)

Ultrasonic Examination of Metals

i. Wrought Products

Aluminium Alloys
Ferrous Metals

ii. Welded Joints

Aluminium Alloys
Ferrous Metals (incl. Stainless)

iii. Castings

Aluminium Alloys
Ferrous Metals

iv. Forgings

Ferrous Metals

Ultrasonic Examination of Components & Assemblies

i. Bonded assemblies such as bearings for bond failure

ii. Thickness measurements

Manual Phased Array

(ii) Welded joints Al, Fe, SS

Eddy Current

Non Destructive Tests by Eddy Current Testing (Al, Cu, Fe, Ni, Mg, Zn)

(a) Surface flaw detection

(b) Metallic coating thickness measurement

(d) Sub surface flaw detection

(e) Weld Testing

Visual Methods

Visual Inspection of metals

(i) Welded Joints

Aluminium Alloys

Ferrous Metals (incl. Stainless Steels)

(ii) Castings

Aluminium Alloys
Ferrous Metals

We use an extensive range of modern techniques and procedures applicable to your industry sector to help you achieve total plant integrity.

Design Engineering is one of New Zealand's leading non destructive testing specialists that carry out a wide range of conventional and advanced non-destructive testing, inspection and asset integrity services.

Weld inspection on new boiler for Oceania Dairies at Glenavy

Online request forms for welding inspection & procedures etc

Inspection Request

PQR Job Request

WQT Job Request

If you would like to find out more about our services, or you have an opportunity for Design Engineering to assist with your engineering service requirements on any given project, and/or require a free quotation, please contact us

Consulting Engineers, Calibration

Certification & Compliance of Equipment