If oxyacetylene flame or plasma is adopted, surface coat that can impact welding quality shall be removed after cutting.
当采用氧乙炔焰或等离子切割时，切割后必须除去影响焊接质量的表面层。
Surface cleaning quality of CO2 shielding welding wire good or not is directly relative to plating coat quality of welding wire.
CO2气保焊丝表面清洗质量的好坏直接关系到焊丝镀层的质量。
Aluminium frame. High-quality steel pipe surface spray holder, with heat-shrinkable tubes coat to prevent scratch.
铝合金框架。支架采用优质钢管表面喷塑处理。外套热缩管，防划伤。
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