카본6인치 6G 전과정/ All work steps of Carbon steel 6G / TIG welding/ ROOT PASS

카본 6인치 Sch.80 비비기로 빽내기/ wiggling/root pass/heavy wall/

6G TIG Welding Guide: 5 Steps to X-Ray Quality Welds!

6G Pipe Test 2" TIG

TIG Welding 6G MAX Test for Beginners Made EASY

수강생 카본6인치 Sch.40 6G 전과정 /Both hands/TIG/ROOT PASS/6G/WQT/Welding

welding WPS 6G position,JUTASAMA ( 2)

6G 과정 수강생의 6G용접 전과정/ Carbon Steel/ 6G/ Root pass/ Laywire/pipe welding

6G Pipe TIG Welding | GTAW

카본 6인치 바닥 위 30cm, 낮은 파이프 5G 용접/ TIG welding 5G position ROOT ~ CAP

Два метода подачи для корневой TIG-сварки