鋼結構表麵處理噴（pēn）砂等級標準ISO8501-1公布於1988年，包括以下四個等級：

Sa1 輕度的噴射

       鋼材表麵應無可見的油脂和汙物，並且沒有附著（zhe）不牢的氧化皮、鐵鏽和油漆塗層及其它雜質（zhì）（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

       鋼材表麵應無可見油脂、汙垢、氧（yǎng）化皮、鐵鏽和油漆塗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

       鋼材表麵應無可見的油脂、汙垢、氧化皮、鐵鏽和（hé）油漆塗層附著物，任（rèn）何殘留痕跡應僅具點狀或條紋狀的（de）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（jīn）屬

       鋼材表（biǎo）麵應無可見的（de）油脂、汙垢、氧化皮（pí）、鐵鏽和油漆塗層等附著物，該表麵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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