鋼結構表面處理噴砂等級標準ISO8501-1公布于1988年，包括以下四個等級：
Sa1 輕度的噴射
鋼材表面應無可見的油脂和污物，并且沒有附著不牢的氧化皮、鐵銹和油漆涂層及其它雜質（水溶性鹽和焊接殘渣）。
Steel surface should be no visible grease and dirt, and there is no attachment not firm scale, rust, paint and other impurities (water soluble salt and welding residue).
Sa2 徹底的噴射處理
鋼材表面應無可見油脂、污垢、氧化皮、鐵銹和油漆涂層及其它雜物應盡可能除去，任何附著物均應是牢靠的。
Steel surface should be no visible oil, dirt, scale, rust and paint coating and other debris should as far as possible eliminate, any attachments should be strong.
Sa2.5 非常徹底的噴射處理
鋼材表面應無可見的油脂、污垢、氧化皮、鐵銹和油漆涂層附著物，任何殘留痕跡應僅具點狀或條紋狀的輕微色斑。
Steel surface should be no visible oil, dirt, scale, rust and paint coating attachments, any markings should be only slight discoloration of dot or stripes.
Sa3 噴砂至可見清潔金屬
鋼材表面應無可見的油脂、污垢、氧化皮、鐵銹和油漆涂層等附著物，該表面應顯示均勻的金屬色澤。
Steel surface should be no visible oil, dirt, scale, rust and paint coating and other attached objects, the surface should be showed homogeneous metal color.
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