Results (
Vietnamese) 1:
[Copy]Copied!
19. What is gas cutting ?The process of joining of cutting metals by using oxygen and combustible gas is called gas cutting.20. What is sand blasting?The process of removing rust dust, dirt, scales and old prints from the old surface using compressed air is called sand blasting.21. What is painting?The process after sand blasting is called painting .
Being translated, please wait..