The process of ____ metal by heating it up is called ____ Flex-coated metal ____ are referred to as ____ The ____ of metal on top of the weld is ____ ____ should not be used in sub of ____ air. When testing gas lines for a ____ you should use ____.

Papan Peringkat

Gaya visual

Pilihan

Berganti templat

Pulihkan simpan otomatis: ?