青云翻译

Be sure to do the oil. Rust prior to welding. Remove the burr

Welding must be done before oiling. derusting. removal of burrs

Before the welding does by all means must eliminates the oil. Eliminates the rust. Elimination burr

In addition it is important to do before welding in addition oil rust removing burrs.

Welding must be done before oiling. derusting. removal of burrs