Tuesday, 15 November 2016

Piping Interview Questions related to Materials: -

Questions related to Materials: -

1. Q:-What is the ASTM code for the following?

  1. Pipes :-
  2. Carbon Steel II. Alloy Steel III. Stainless Steel IV. Nickel Steel.
  3. Tubes: -
  4. Carbon Steel II. Alloy Steel III. Stainless Steel IV. Nickel Steel.
  5. Wrought Iron Fittings: -
  6. Carbon Steel II. Alloy Steel III. Stainless Steel IV. Nickel Steel.
  7. Forged Fittings: -
  8. Carbon Steel II. Alloy Steel III. Stainless Steel IV. Nickel Steel.
  9. Cast Fittings: -
  10. Carbon Steel II. Alloy Steel III. Stainless Steel IV. Nickel Steel.
  11. Plates: -
  12. Carbon Steel II. Alloy Steel III. Stainless Steel IV. Nickel Steel.

Answer: -

  1. Pipes:-
  2. Carbon Steel : - ASTM A53 Gr. A/B, ASTM A106 Gr. A/B/C, ASTM A333 Gr.1/Gr.6
  3. Alloy Steel :- ASTM A335 Gr.P1/P2/P5/P7/P9/P11/P12/P22.
III. Stainless Steel :- ASTM A312TP304/TP304L/TP304H/TP308/TP310/TP316/TP316L/
TP316H/TP317/TP321/TP321H/TP347/TP347H/TP348/TP348H.
  1. Nickel Steel :- ASTM A333Gr.3/ Gr.8.

  1. Tubes:-
  2. Carbon Steel :- ASTM A178/179/192, ASTM A334 Gr.1/6.
  3. Alloy Steel :- ASTM A161T1, ASTM A213T1/T2/T5/T7/T9/T11/T12/T22.
III. Stainless Steel :- ASTM A213 TP304/TP304L/TP304H/TP310/TP316/TP316L/TP316H/
TP317/TP321/TP321H/TP347/TP347H/TP348/TP348H,
ASTM A608 HK40.
  1. Nickel Steel :- ASTM A334Gr.3/Gr.8
  2. Wrought Iron fittings :-
  3. Carbon Steel :- ASTM A234Gr.WPA/B, ASTM A420 Gr.WPL6.
  4. Alloy Steel :- ASTM A234 WP1/WP5/WP7/WP9/WP11/WP12/WP22.
III. Stainless Steel :- ASTM A403 WP304/WP304L/WP304H/WP309/WP310/WP316/
WP316L/WP316H/ WP317/WP321/WP321H/WP347/WP347H/
WP348.
  1. Nickel Steel :- ASTM A420WPL6/WPL8.
  2. Forged Fittings : -
  3. Carbon Steel :- ASTM A181. ASTM A105, ASTM A350 LF1/2.
  4. Alloy Steel :- ASTM A182F1/F2/F5/F7/F9/F11/F12/F22.
III. Stainless Steel :- 

ASTM A182F6/F304/F304L/F304H/F310/F316/F316L/F316H/F321/
F321H/F347/F347H/F348.
  1. Nickel Steel :- ASTM A350 LF3, ASTM A522.
  2. Cast Fittings: -
  3. Carbon Steel :- ASTM A216, ASTM A352 LCB/C.
  4. Alloy Steel :- ASTM A217 WC1/WC6/WC9/C5/C12.
III. Stainless Steel :- ASTM A217 CA15, ASTM A296 CA15, ASTM A351 CF8/CF3/CH20/ CK20/CF 8M/CF 3M/CF 8C/HK40.
  1. Nickel Steel :- ASTM A352LC3.
  2. Plates: -
  3. Carbon Steel :- ASTM A285, ASTM A515, ASTM A516.
  4. Alloy Steel :- ASTM A387 Gr.2/Gr.5/Gr.7/Gr.9/Gr.11/Gr.12/Gr.22.
III. Stainless Steel :- ASTM A240 TP410/TP405/TP430/TP304/TP304L/TP309/TP310S/
TP316/TP316L/TP317/TP321/TP347/TP348
  1. Nickel Steel :- ASTM A203 Gr.D/Gr.E, ASTM A353.

2. Q:-What is the basic difference between Pipe specification A106 Gr.A / Gr.B/ Gr.C.?

Answer: -

Difference is due to the Carbon content.
% of carbon content in : -
  1. ASTM A106 Gr. A – 0.25 %
  2. ASTM A106 Gr. B – 0.30 %
II ASTM A106 Gr. C – 0.35 %.

3. Q:-What is the difference between pipe specification ASTM A312 TP 304 & ASTM A312 TP304L, ASTM A312 TP 316 & ASTM A312 TP 316L?


Answer: -


Difference is due to the Carbon content. The Letter “L” denotes lower percentage of carbon.
% of carbon content in : -
  1. ASTM A312 TP 304 - 0.08 %
  2. ASTM A312 TP 304L- 0.035%
III. ASTM A312 TP 316 - 0.08 %
  1. ASTM A312 TP 316L- 0.035%

Friday, 4 November 2016

Friday, 2 September 2016

Tuesday, 16 August 2016

Interview Questions Answers Related to Codes & standard

Questions Answers Related to Codes & standard: -

1. Q:-What is the ASME code followed for design of piping systems in Process piping (Refineries & Chemical Industries)?
(i) B 31.1
(ii) B 31.3
(iii) B 31.5
(iv) B 31.9
Answer (II)
2. Q:-Which American institute standard does piping engineer refer?
Answer: -
A. The American Petroleum institute (API).
B. The American Iron & Steel institute (AISI).
C. The American Society for Testing and materials (ASTM).
D. The American National standard institute (AISI).
E. The American welding society (AWS).
F. The American Water Works Association (AWWA).
G. The American Society for Mechanical Engineers (ASME).
3. Q:-What is the different ASME 31 code for pressure piping?
Answer: -
A. ASME B31.1 - Power piping.
B. ASME B31.2 - Fuel Gas Piping.
C. ASME B31.3 - Process piping.
D. ASME B31.4 - Pipeline Transportation system for liquid hydrocarbon & other liquid.
E. ASME B31.5 - Refrigeration Piping.
F. ASME B31.8 - Gas transmission & distribution piping system.
G. ASME B31.9 - Building services piping.
H. ASME B31.11 - Slurry transportation piping system.
4. Q:-What are the different sections of ASME code? Where these sections are referred?
Answer: -
A. ASME section I : - Rules for construction of power boiler.
B. ASME Section II : - Materials.
Part A – Ferrous materials.
Part B – Non-Ferrous materials.
Part C – Specification for electrodes & filler wire.
Part D – Properties.
C. ASME Section IV : - Rules for construction of Heating Boiler.
D. ASME Section V : - Non- destructive Examination.
E. ASME Section VI : - Recommended rules for care & operation of heating boiler.
F. ASME Section VII : - Recommended guidelines for care of power boiler.
H. ASME Section VIII : - Rules for construction of pressure vessels. (Division I & II)
I. ASME Section IX : - Welding & Brazing qualification.
5. Q:-Which American standard is reffered for selection of following piping element?
A. Flanges B. Butt Welded fittings C. Gasket D. Socket & Threaded fittings
E. Valves F. Pipes.
Answer: -
A. Flanges :-
I. ASME B16.1 : - Cast iron pipes flanges & flanged fittings.
II. ASME B16.5 : - Carbon steel pipes flanges & flanged fittings. (Up to 24”)
III. ASME B16.47 : - Large Diameter steel flanges. (Above 24”)
B. Butt welded fittings :-
I. ASME B16.9 : - Steel butt welding fittings.
II. ASME B16.28 : - Butt-welded short radius elbows & returns bends.
C. Gasket :-
I. ASME B16.20 / API -601: - Metallic gaskets for pipe flanges- Spiral wound,
Octagonal ring Joint & Jacketed flanges.
II. ASME B16.21 : - Non metallic gasket.
D. Socket & Threaded fittings :
I. ASME B16.11 : - Forged steel socket welding & threaded fittings.
E. Valves :-
I. ASME B16.10 : - Face to face & end to end dimension of valves.
II. ASME B16.34 : - Flanged & butt-welded ends steel valves (Pressure &Temperature ratings)
except Ball, Plug & Butter fly Valves.
F. Pipes :-
I. ASME B36.10 : - Welded & Seamless wrought iron pipes.
II. ASME B36.19 : - Stainless steel pipes.

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Friday, 12 August 2016

AWS-CWI Certification Seminar | Certified Welding Inspector Training Delhi

AWS-CWI Certification Seminar | Certified Welding Inspector Training Delhi


Certified Welding Inspector Training, AWS-CWI Certification Seminar in Delhi

Eurotech is pleased to announce that it will be sponsoring a AWS CWI Certified Welding Inspector Seminar and Examination. American Welding Society have engaged Eurotech to provide an 48-hour course over a one-week period to prepare students for taking the AWS CWI/CWE test after the training.
The seminar and examination will be held in New Delhi India.
AWS-CWI Certification is one of the industry’s most reputed Stamps of approval. Industry professional who qualify for CWI and SCWI are highly regarded and sought after throughout the welding and QA/QC industry, because certification adheres to a highly documented level of skill and capability
AWS-CWI course will serve as a sound refresher in welding inspection, particularly for practising welding inspectors, Welding Engineers, welding supervisors, welding manager, welding fabrication, and anyone aspiring to be an AWS-CWI (Certified Welding Inspector). The main emphasis is on what a professional welding inspector should know in actual practice.AWS CWI Course participants will undergo a rigorous programme to get them well versed with the codes or standards in use, the fundamentals of welding inspectors, and actual hands-on examinations of weld replicas with various inspection tools.

Eligibility CWI Certified Welding Inspector Exam/Seminar:

Minimum of 5 year industry experience or Minimum of 3 year industry experience with degree/diploma holders in engineering, technology, engineering physics or physical science
  • Associate or higher degree in engineering technology, engineering, or a physical science 3 years
  • High school diploma plus two or more years engineering/technical school courses 3 years
  • High school diploma plus one year engineering/technical school courses or one or more years of vocational education and training in a welding curriculum 4 years
  • High school diploma or approved high school equivalency diploma 5 years
  • At least 8th grade 9 years
  • Less than 8th grade 12 years

Certified Welding Inspector Exam Pattern:

  • Part A – Fundamentals 150 2 hours 72% Close Book
  • Part B – Practical 46 2 hours 72% Close Book
  • Part C – Code Book 60 2 hours 72% Open Book

AWS CWI Seminar Description:

Welding Inspection Technology Workshop - 3 DAYS

Helps prepare you for the CWI/CWE Exam (Part A) The Welding Inspection Technology Workshop is packed with information on nondestructive examination methods applicable to common welding processes. It will assist welding inspectors and welding educators with knowledge of welding and inspection fundamentals useful on the jobsite. In addition, this seminar will prepare examination candidates for Part A (Fundamentals) of the CWI examination.

Visual Inspection Workshop( 1.5 Day)

Helps prepare you for the CWI/CWE Exam (Part B) This workshop provides hands-on training in the use of weld measurement tools and plastic weld replicas to determine the sizes of various weld discontinuities. Students will compare what they find to the criteria in a sample codebook to determine the acceptability or rejection criteria of the sample weldments. The workshop also includes a sample practical examination to prepare test candidates for Part B (Practical Applications) of the CWI examination. By attending this workshop, you can learn: Use of inspection tools. How to ensure compliance with the applicable code. Do’s and don’ts of documentation. When a discontinuity is acceptable. When a discontinuity can be rejected. Why visual inspection can be the most effective NDE technique.

API 1104 Code Clinic( 1.5 DAY)

Helps prepare you for the CWI Exam (Part C) if you are testing to API 1104 This four-hour course covers general provisions of API 1104, including qualification of welding procedures for welds containing filler-metal additions, design and preparation of the joint for production welding, nondestructive testing and acceptance standards, and automatic welding with and without filler-metal additions. Candidates will be given the Course material for training before the workshop and are supposed to come with a thorough reading in the class.

Benefits of AWS CWI Exam:

  • Official Course for AWS CWI Certification
  • 6 Days Intensive Training
  • Includes Basic NDT Techniques and Welding Techniques
  • Results in Deeper Understanding of Welding Quality

AWS CWI Seminar Location: Country: India City: New Delhi

Who Should Attend CWI Certified Welding Inspector Course?

All personnel whose responsibilities are in making decision, exercising of judgment concerning welding operations in the following industries. Like Oil and Gas, Manufacturing, Petrochemical, Power Generation and Power Stations, Ship Building/Ship Repair and Construction, Offshore Fabrication, Railways, Service and Maintenance and Metal Fabrication.

Renewals process for CWI Certified Welding Inspector:

The renewal process is part of your continued certification according to QC1:2007.The validity of the certification is 3 years and Certified Welding Inspectors can renew their status by applying in the prescribed application format before the expiration date of the certification.
If the renewals are not applied before expiration, the candidates lose their CWI Certified Welding Inspector status and will have to reappear for fresh certification.

Contact us for the renewals of your AWS-CWI, SCWI certifications well before 8-weeks of expiration.


Please Contact Puneet Sharma via phone: +91-8196980555 or by email at aws.cwi.training@gmail.com to reserve your place early and to be issued a CWI application.

If you have any questions, please feel free to ask!

Mr.Puneet Sharma | Call: +91- 8196980555 E-mail: aws.cwi.training@gmail.com

Attend AWS CWI Seminar, Please fill out the Enquiry Form:


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Your Details:



Tuesday, 9 August 2016

Q:- A 10 mm fillet weld has a nominal :

1). Throat dimension of 10 mm  
2). Area of 10 mm  
3). Leg length of 10 mm  
4). All of the above

Tuesday, 2 August 2016

AWS Certified Welding Inspector CWI Seminar Mumbai Maharashtra India

AWS CWI Course in Mumbai

AWS CWI - Official Seminar 7 Day Authorized Seminar,  AWS CWI Mumbai August 2016, AWS - CWI TRAINING AND CERTIFICATION, AWS Certified Welding Inspector Course , American welding society courses in India, AWS-CWI Mumbai Maharashtra India

If you are looking for AWS CWI Exam Coaching Classes In Mumbai Maharashtra India, Eurotech AWS Agent Can Help you! Eurotech is one of the Best AWS CWI Training Institute in India, Eurotech Assessment & Certification Services Pvt. Ltd is pleased to announce its next training schedule - a 7 day training seminar and exam on AWS - CWI (American Welding Society - Certified Welding Inspector) to be held in Mumbai region, India.

Eurotech ACSPL has been authorized by AWS for conducting the CWI training-exam on behalf of AWS.
The Certified Welding Inspector 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. This certification can lead you to a career that is engaging and promising on all levels.
Drop a mail at (AWS.CWI.Training@Gmail.Com) for more details.

AWS CWI Course Benefits:

- Official Course for AWS CWI Certification
- 6 Days Intensive Training
- Includes Basic NDT Techniques and Welding Techniques
- Results in Deeper Understanding of Welding Quality

AWS CWI Course Description:

Welding Inspection Technology Workshop - 3 DAYS

Helps prepare you for the CWI/CWE Exam (Part A) The Welding Inspection Technology Workshop is packed with information on nondestructive examination methods applicable to common welding processes. It will assist welding inspectors and welding educators with knowledge of welding and inspection fundamentals useful on the jobsite. In addition, this seminar will prepare examination candidates for Part A (Fundamentals) of the CWI Certified Welding Inspector examination.

Visual Inspection Workshop ( 1.5 Day)

Helps prepare you for the CWI/CWE Exam (Part B) This workshop provides hands-on training in the use of weld measurement tools and plastic weld replicas to determine the sizes of various weld discontinuities. Students will compare what they find to the criteria in a sample codebook to determine the acceptability or rejection criteria of the sample weldm ents. The workshop also includes a sample practical examination to prepare test candidates for Part B (Practical Applications) of the CWI examination. By attending this workshop, you can learn: Use of inspection tools. How to ensure compliance with the applicable code. Do’s and don’ts of documentation. When a discontinuity is acceptable. When a discontinuity can be rejected. Why visual inspection can be the most effective NDE technique.

API 1104 Code Clinic ( 1.5 DAY)

Helps prepare you for the CWI Certified Welding Inspector Exam (Part C) if you are testing to API 1104 This four-hour course covers general provisions of API 1104, including qualification of welding procedures for welds containing filler-metal additions, design and preparation of the joint for production welding, nondestructive testing and acceptance standards, and automatic welding with and without filler-metal additions. Candidates will be given the Course material for training before the workshop and are supposed to come with a thorough reading in the class.

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If you have any questions, please feel free to ask!

Mr.Puneet Sharma | Call: +91- 8196980555 | E-mail: aws.cwi.training@gmail.com

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Wednesday, 27 July 2016

Interview Questions and Answers | Welding Interview Questions

Interview Questions and Answers | Welding Interview Questions

Q:- What is the standard for Process (or) Plant piping systems?
Answer: ASME B 31.3

Q:- What is the standard for Power Piping systems?
Answer: ASME B 31.1

Q:- What is the standard for liquid Petroleum Transportation piping systems?
Answer: ASME B31.4

Q:- What is the standard for Gas Transmission and Distribution piping systems?
Answer: ASME B31.8

Q:- What is the Code for Welding of Pipelines and Related facilities?
Answer: API 1104

Q:- What is the standard for welding rods Electrodes and filler metals?
Answer: ASME Sec-IIC

Q:- What is the standard for Non-destructive Examination?
Answer: ASME Sec-V

Q:- What is the standard for welding and Brazing Qualifications?
Answer: ASME Sec-IX

Q:- Which type of process we are using in field/fabrication shop?
Answer: Fusion welding

Q:- What is the specification/classification for carbon steel filler wire?
Answer: AWS 5.18/ER70-Sx

Q:- What is the specification/classification for carbon steel Electrode?
Answer: AWS 5.1/E-XXXX

Q:- Where we can use E-6010 type electrode?
Answer: we can use at root pass for deep penetration

Q:- What is the meaning for ASME?
Answer: American Society for Mechanical Engineering

Q:- Which type of electrode we are using in GTAW process?
Answer: Non-Consumable Tungston Electrode

Q:- How Many times we can dry the electrodes?
Answer: Only one time

Q:- Why we are baking the electrodes?
Answer: To remove the moisture content from the Electrodes.

Q:- What is the standard for Structural steel fabrication?
Answer: AWS D1.1

Q:- What is the standard for Welding symbols?
Answer: AWS A2.4.

Q:- What is the hydrotest pressure?
Answer: 1.5 Times of design pressure.

Q:- What is the drying temperature for Stainless Steel electrodes?
Answer: 120 to 250 degree temperature.

Q:- What is the drying procedure procedure for Low hydrogen electrodes?
Answer: 260 to 430 degree temperature.baking for two hours 

Q:- What are the defects we can find in visual Inspection?
Answer: Porosity,Undercut,Surface crack (HIC),Side wall fusion on fusion boundary.

Q:- What is the Procedure for Fit-Up inspection?
Answer: Base metal classification,cleaning,Alignment,root gap,root face,bevel angle & mismatch (or) overlap.

Q:- What is the internal overlap (or) mismatch for piping?
Answer: 1.5 mm.

Q:- How much root face are allowed?
Answer: As per WPS (or) 0.8 to 1.6 mm

Q:- What is meaning for F - Number?
Answer: F- is filler metal grouping Number.

Q:- What is meaning for P - Number?
Answer: P - is base metal grouping Number.

Q:- What is meaning for A - Number?
Answer: A - is electrode chemical analysis number.

Q:- How much bead width we can allow?
Answer: Max 3 times of electrode diameter.

Q:- How much area is required for Pre-heat?
Answer: 75 mm minimum from both end of the Joint.

Q:- Which section we are using for NDT?
Answer: ASME Sec-V

Q:- What are the essential variables for SMAW process?
Answer: In base metal thickness, P-number, dia of pipe, pre, post weld heat treatment
In filler metals F,A-numbers, dia 

Q:- What are the essential variables for GTAW process?
Answer: In Base Metal thickness, P-number, dia of pipe, pre, post weld heat treatment... In Filler Metals F, A-numbers,dia of filler metal

Q:- If welder made test by 2’’ dia, what is his range qualified?
Answer: He has qualified 1’’-dia and above.

Q:- If welder made test by 14 mm thickness, what is his thickness range qualified?
Answer: He has qualified unlimited thickness.

Q:- What is carbon % in low carbon steel?
Answer: Max 0.30 %

Q:- What is the interpass temperature for carbon steel materials?
Answer: Max 315’C

Q:- What is meaning for SAES,SAEP and SAMSS?
Answer: Saudi Aramco Engineering Standards
Saudi Aramco Engineering Procedures
Saudi Aramco Materials System Specification.

Q:- How much under cut depth allowed in piping?
Answer: 0.8 mm

Q:- How much area is required for Pre-heat?
Answer: 75 mm minimum from both end of the Joint.

Q:- How much percentage is allowed more than test pressure in Pressure relief device?
Answer: Test pressure plus10% (10% should be lesser than 50Psi).

Q:- How much gap is allowed in socket weld?
Answer: 1.5 mm minimum before welding.

Q:- What is the minimum fillet size in socket weld?
Answer: Minimum 3 mm fillet size.
Q:- Hydro test.
1. Piping Internal Cleaning
a. Air compressor
b. Air blower
c. Electrical cable
d. Generator
c. Wire brush
d. cotton waste cloth
e. water tanker water with pump
2. Testing
a. Pressure gauge-(30days calibration valid, range 1.5 to 2 times test pressure)
b. Test manifold (calibration validity)
c. Pressure relief valve( Set to 5% above test pressure)
d. Test pump
e. Water tank
f. Hoses
g. Test blind
h. Test water (refer as per project specification)
II. Test package 
1. Calibration Certificates of Gauges ,relief valves
2. P&ID and ISO Drawing
3. Test Package Control sheet
4. Marked up P&ID
5. As built Drawing
6. Welding log
7. NDE report
8 .Punch list –all punch list cleared (category one)
9. Pressure test Check sheet
10. Safety check lists

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Tuesday, 26 July 2016

AWS Certified Welding Inspector Certification Chennai

Attend Our AWS CWI Semminar in Chennai

AWS CWI | Certified Welding Inspector Certification | Chennai, Tamil Nadu, India

AWS CWI Certification, AWS CWI Seminar, AWS CWI Training, CWI Training, Certified welding inspector training, Certified Welding Inspector Exam, AWS Certified Welding Inspector Certification, certified welding inspector seminar, AWS CWI - Official Seminar 6 Day Authorized Seminar Chennai Tamil Nadu
Eurotech offer 7 days of intensive Certified Welding Inspector Certification Seminar that will help prepare you to pass the AWS certification tests. Our experienced instructors will help you learn the material you need to know fast, and show you how to use and understand the latest standards.

AWS CWI - Official Seminar 6 Day Authorized Seminar Chennai 2016

AWS CWI Course Details:

Welding Inspection Technology Workshop - 3 DAYS

Helps prepare you for the CWI/CWE Exam (Part A) The Welding Inspection Technology Workshop is packed with information on nondestructive examination methods applicable to common welding processes. It will assist welding inspectors and welding educators with knowledge of welding and inspection fundamentals useful on the jobsite. In addition, this seminar will prepare examination candidates for Part A (Fundamentals) of the Certified Welding Inspector examination.

Visual Inspection Workshop (1.5 Day)

Helps prepare you for the CWI/CWE Exam (Part B) This workshop provides hands-on training in the use of weld measurement tools and plastic weld replicas to determine the sizes of various weld discontinuities. Students will compare what they find to the criteria in a sample codebook to determine the acceptability or rejection criteria of the sample weld ments. The workshop also includes a sample practical examination to prepare test candidates for Part B (Practical Applications) of the Certified Welding Inspector examination. By attending this workshop, you can learn: Use of inspection tools. How to ensure compliance with the applicable code. Dos and don’ts of documentation. When a discontinuity is acceptable. When a discontinuity can be rejected. Why visual inspection can be the most effective NDE technique.

API 1104 Code Clinic ( 1.5 DAY)

Helps prepare you for the Certified Welding Inspector Exam (Part C) if you are testing to API 1104 This four-hour course covers general provisions of API 1104, including qualification of welding procedures for welds containing filler-metal additions, design and preparation of the joint for production welding, nondestructive testing and acceptance standards, and automatic welding with and without filler-metal additions. Candidates will be given the Course material for training before the workshop and are supposed to come with a thorough reading in the class.

Benefits of AWS CWI Certification:

- Official Course for AWS Certified Welding Inspector Certification
- 6 Days Intensive Training
- Includes Basic NDT Techniques and Welding Techniques
- Results in Deeper Understanding of Welding Quality

Top Searches related to AWS CWI Certification

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If you have any questions, please feel free to ask!

Mr.Puneet Sharma | Call: +91- 8196980555 | E-mail: aws.cwi.training@gmail.com

If you want to Attend AWS CWI Seminar, Please fill out the Enquiry Form


Thursday, 7 July 2016

Q:- Atmospheres for shielding an arc may consist of:


1. Inert gases, active gases, or mixtures of inert and active gases 
2. Only inert gases are permitted 
3. Only active gases are permitted 
4. No gases are permitted for welding
5. none of the above