十堰竹溪县房县壳牌压缩机油-空压机油经销国等效采用国际标准ISO 6743/3A-1987，制定了压缩机油分类标准GB/T 7631.9-1997。往复式空气压缩机油分为轻负荷L-DAA、中负荷L-DAB、重负荷L-DAC三种，其中DAA、DAB属矿油型，DAC属合成油型。回转式空气压缩机油按轻、中、重负荷也分为三种，即轻负荷的L-DAG、中负荷的L-DAH，重负荷的L-DAJ，其中DAG、DAH属矿油型，DAJ为合成型。气体压缩机油按组成和特性分为五种，即DGA（矿油型）、DGB（特定矿油）、KGC（常用合成液）、DGB（非烃合成液）、DGE（常用合成液）The national equivalent adopts the international standard ISO 6743/3A-1987 and has formulated the classification standard GB/T 7631.9-1997 for compressor oil. Reciprocating air compressor oil is divided into three types: light load L-DAA, medium load L-DAB, and heavy load L-DAC. Among them, DAA and DAB belong to mineral oil type, while DAC belongs to synthetic oil type. Rotary air compressor oil is divided into three types according to light, medium, and heavy loads, namely L-DAG for light load, L-DAH for medium load, and L-DAJ for heavy load. DAG and DAH belong to mineral oil type, while DAJ is synthetic type. Gas compressor oil is divided into five types based on composition and characteristics, namely DGA (mineral oil type), DGB (specific mineral oil), KGC (commonly used synthetic fluid), DGB (non hydrocarbon synthetic fluid), and DGE (commonly used synthetic fluid)