College Trained Teacher With Associate Degree In Mechanical Engineering. Had been a Welding School Instructor for two years. All trainees passed the 6G Certification exams within 240 hours of pract...ver maisCollege Trained Teacher With Associate Degree In Mechanical Engineering. Had been a Welding School Instructor for two years. All trainees passed the 6G Certification exams within 240 hours of practical training. The 6G Certification is recognised world wide, and many of the candidates used it to secure PRs in Canada, USA, Australia and New Zealand.ver menos