Monday, February 28, 2011

Welding Inspector Certification Exam preparatory Courses - India's No 1 best NDT institute under top 10

Welding Inspector Certification Exam preparatory Courses. India's No 1 best NDT institute under top 10 Visit: 

Trinity Institute of NDT Technology is an ISO 9001:2008 Certified Institute for World class training certification courses offering NDT and Welding Inspector courses throughout the calender year. For upcoming schedules log on to:

Participants from more than 35 country nationals and 15000+ certifications. Join us and feel the best in class training. See the testimonial at our webpage or facebook fan page.

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Sunday, February 27, 2011

Comparision of major NDT methods for Nondestructive testing of Welds

Detection of
Magnifying glass
Weld sizing gauge
Pocket rule
Straight edge
Workmanship standards
Surface flaws - cracks, porosity, unfilled craters, slag inclusions Warpage, underwelding, overwelding, poorly formed beads, misalignments, improper fitup
Low cost.
Can be applied while work is in process, permitting correction of faults.
Gives indication of incorrect procedures.
Applicable to surface defects only.
Provides no permanent record.
Should always be the primary method of inspection, no matter what other techniques are required.
Is the only "productive" type of inspection.
Is the necessary function of everyone who in any way contributes to the making of the weld.
Commercial X-ray or gamma units made especially for inspecting welds, castings and forgings.
Film and processing facilities.
Fluoroscopic viewing equipment.
Interior macroscopic flaws - cracks, porosity, blow holes, nonmetallic inclusions, incomplete root penetration, undercutting, icicles, and burn through.
When the indications are recorded on film, gives a permanent record.
When viewed on a fluoroscopic screen, a low-cost method of internal inspection
Requires skill in choosing angles of exposure, operating equipment, and interpreting indications.
Requires safety precautions. Not generally suitable for fillet weld inspection.
X-ray inspection is required by many codes and specifications.
Useful in qualification of welders and welding processes.
Because of cost, its use should be limited to those areas where other methods will not provide the assurance required.
Special commercial equipment.
Magnetic powders - dry or wet form; may be fluorescent for viewing under ultraviolet light.
Excellent for detecting surface discontinuities -
especially surface cracks.
Simpler to use than radiographic inspection.
Permits controlled sensitivity.
Relatively low-cost method.
Applicable to ferromagnetic materials only.
Requires skill in interpretation of indications and recognition of irrelevant patterns.
Difficult to use on rough surfaces.
Elongated defects parallel to the magnetic field may not give pattern; for this reason the field should be applied from two directions at or near right angles to each other.
Liquid Penetrant
Commercial kits containing fluorescent or dye penetrants and developers.
Application equipment for the developer.
A source of ultraviolet light - if fluorescent method is used.
Surface cracks not readily visible to the unaided eye.
Excellent for locating leaks in weldments.
Applicable to magnetic and nonmagnetic materials. Easy to use. Low cost.
Only surface defects are detectable.
Cannot be used effectively on hot assemblies.
In thin-walled vessels will reveal leaks not ordinarily located by usual air tests. irrelevant surface conditions (smoke, slag) may give misleading indications.
Special commercial equipment, either of the pulse-echo or transmission type.
Standard reference patterns for interpretation of RF or video patterns.
Surface and subsurface flaws including those too small to be detected by other methods.
Especially for detecting subsurface lamination-like defects.
Very sensitive.
Permits probing of joints inaccessible to radiography.
Requires high degree of skill in interpreting pulse-echo patterns. Permanent record is not readily obtained.
Pulse-echo equipment is highly developed for weld inspection purposes.
The transmission-type equipment simplifies pattern interpretation where it is applicable.

Wednesday, February 23, 2011

AWS CWI Training - Conference and Exams at Cochin, Kerala-India

AWS-CWI certification is one of the internationally recognized welding inspector certification program available in India. The programs consists of conferences followed by examinations.

Now, AWS CWI Conference and examinations are scheduled from 12th  to 17th March 2011 at Cochin, Kerala.

For eligibility criteria, fee, complete brochures email us along with your contact details :

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Tuesday, February 22, 2011

Subscribe for latest updates on NDT Training courses and AWS, CSWIP courses

Candidates interested in having latest updates on NDT Training and certification courses and AWS, CSWIP exam preparatory courses conducted and organized by 'Trinity NDT' can now subscribe easily by a very simple and easy step. You can just reach the "subscibe to our mailing list' menu to your right top corner of this webpage and simply enter your e-mail ID. Then you will be receive all the updates at Trinity NDT instantaneously  directly to your mail.

You can have latest information about the world class NDT & welding inspector courses and updates conducted by Trinity Institute of NDT Technology, India.

To experience most effective training please visit: or call: +91 99009 29439. You can also directly email us your queries to :

Sunday, February 20, 2011

Forging temperatures of commonly used Metals

Forging temperature is a temperature at which a metal becomes soft like clay or its shape can be changed by applying a relatively small force without creating cracks in metal. Chart for forging Temperature (Please note the temperature given here is for reference only. Actual temperatures may vary depending on specific composition of metals):
Carbon Steel
Stainless steel (Magnetic)
Stainless steel (Nonmagnetic)

Wednesday, February 16, 2011

NDT training schedule from 17th March 2011 in India

Next NDT Training courses  schedule starts from 17th March 2011 at NDT & Welding courses Training Center, Trinity Institute of NDT Technology, 2nd stage, Peenya Industrial Estate, Bangalore - 560 058, India.

The program contains refresher courses on UT, MT, PT, RTFI & VT as per ASNT practice SNT-TC-1A-2006.

For detailed free e-brochures on course schedules, call 'Course Director' on +91 99009 29439 or email your request to :

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Monday, February 14, 2011

Job vacancies for recruitment in Doha, Saudi Arabia and other Gulf, Middle East countries

Our clients are looking for filling the following job vacancies in Doha, Saudi Arabia and other Gulf/Middle east countries

1) Civil Engineers B.E /B.Tech Certification: Civil structural engineers,Civil Planning Engineers(Primavera Certifications),Civil Site Engineers,Civil Project Engineer/Manager QA/QC civil lnspectors

2) Mechanical Engineers B.E/B.Tech Certification: Mechanical/Quantity Surveyor /Planning /Project Enginners, Primavera Certification, QA/QC Piping Inspectors,Pipe Design System (P.D.S Microstation Certifications

4) Welding Inspectors:  AWS (CWI) or CSWIP 3.1/3.2 Certification basic degree B.E or B.Tech Knowledge in Piping and hydro test and also experiences in cross way pipelines.(if) after W.I five years or three years experience

5) Coating Inspectors: Nace B GAS Certification: basic degree B.E or B.Tech (Experiences)

All candidates should have basic engineering (B.E/B.Tech)degree holders and also Indian Driving licenses along with Gulf or totally 5 years experience

Interested candidates can forward their resumes to :

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Saturday, February 12, 2011

Level II Training on Ultrasonic testing of Weld Joints - T K Y Joints

Trinity Institute of NDT Technology is shortly organizing and conducting special level II training course for practicing engineers and technicians on Ultrasonic testing of T K Y joints at Bangalore training center in India.

For detailed information on eligibility requirements, experience, schedule and other details contact 'Course Director' on +91 99009 29439, Telefax: +91-80-28366466. You can also email to:

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Wednesday, February 9, 2011

‘Trinity NDT’ is organizing ‘American Welding Society-AWS’ approved AWS-CWI courses in India

'Trinity Institute of NDT Technology'  is organizing 'American Welding Society' approved AWS-CWI courses from 19th February 2011 in India. Interested candidates can contact us with their educational qualifications and experience to get compete details along with related brochures.

 About AWS-CWI
The Certified Welding Inspector (CWI) certification is more than a rewarding career. It involves great responsibility and remarkable skill demonstration. The CWI is widely recognized, both nationally and internationally, and successful companies have come to rely on this AWS certification when ensuring the highest level of quality workmanship. In a survey it has been found that welding work under supervision make a valuable contribution to the four most important metrics in welding operations: quality, cost, productivity and safety.

The benefits of AWS CWI Certification:
  • Internationally recognized and accepted.
  • Obtain certification as a welding inspector that demonstrates a level of proficiency to a defined internationally accepted standard.
  • Improve welding inspection skills, expand knowledge base, learn use of diverse fabrication, inspection and testing codes, standards and specifications.
  • Qualification tests and inspection reports signed and approved by a CWI add credibility that testing and inspection has been done to industry recognized standards.
  • Leads to a career that is highly remunerative, engaging and promising on all levels.
For more details call us on +91 99009 29439 or email us:
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Monday, February 7, 2011

Cracks on steel tubes observed using magnetic particle testing

'Trinity NDT' carried out raw material NDT on steel Dia 16mm tubes. The cracks observed on ST52 tube material are reproduced here. Some of them are through thickness cracks. The team segregated the defective materials using magnetic particle testing. Visit: to know more about the NDT inspection services and training and certification courses.

Friday, February 4, 2011

Watch & Download magnetic particle testing video by Trinity NDT- A Training Video

Magnetic particle testing is one of the most widely used NDT method for detecting surface and subsurface flaw at all the stages of manufacturing and particularly in the raw material stage to detect serious discontinuities and to weed out defective materials.

Watch an excellent video by Trinity NDT on Magnetic Particle testing carried on a rolled bar at the material testing facility in Bangalore-India using electromagnetic wet non-fluorescent yoke technique. As the surface is in as rolled condition, for better contrast and hence the detectability the team used "Magnaflux" white contrast paint.

Click here to watch and free download the NDT video