nd鋼管：09CrCuSb（企業(yè)代號(hào)ND鋼）耐硫酸低溫露點(diǎn)腐蝕用鋼（ND鋼板，ND鋼管，09CrCuSb鋼板，09CrCuSb鋼管等）。 09CrCuSb（ND鋼管）鋼是以燃煤鍋爐，燃油鍋爐；電爐的熱交換、煙管、煙囪,鍋爐空氣預(yù)熱器，省煤氣，換熱器，冷凝冷卻器，蒸發(fā)器等用途為目的開發(fā)的具有優(yōu)秀的耐硫酸露點(diǎn)腐蝕的熱軋鋼板、鋼管。其優(yōu)越的耐硫酸露點(diǎn)腐蝕的性能及非常高的性價(jià)比，是完全可以代替不銹鋼，超越不銹鋼（在耐硫酸露點(diǎn)腐蝕方面）的最好材料，ND鋼具有重大經(jīng)濟(jì)意義，符合當(dāng)今高效.長壽.節(jié)能.環(huán)保等“綠色”觀念和國家發(fā)展政策導(dǎo)向。ND鋼 即09CrCuSb 鋼是目前國內(nèi)外最理想的“耐硫酸低溫露點(diǎn)腐蝕”用鋼材，ND鋼廣泛用于制造在高含硫煙氣中服役的省煤器，空氣預(yù)熱器，熱交換器和蒸發(fā)器等裝置設(shè)備，用于抵御含硫煙氣結(jié)露點(diǎn)腐蝕。ND鋼還具有耐氯離子腐蝕的能力。ND鋼管主要的參考指標(biāo)（70攝氏度50%H2SO4溶液中浸泡24小時(shí)），與碳鋼，日本進(jìn)口同類鋼，不銹鋼耐腐蝕性能相比，要高于這些鋼種。產(chǎn)品經(jīng)國內(nèi)各大煉油廠和制造單位使用后受到廣泛好評(píng)，鋼中碳含量較低，并獲得良好的使用效果。

ND steel pipe: 09CrCuSb (enterprise code ND steel) low temperature sulfuric acid dew point corrosion resistant steel (ND steel plate, ND steel pipe, 09CrCuSb steel plate, 09CrCuSb steel pipe, etc.). 09CrCuSb (ND steel) is a hot-rolled steel plate and steel pipe with excellent sulfuric acid dew point corrosion resistance, developed for the purpose of coal-fired boiler, oil-fired boiler, electric furnace heat exchange, flue gas pipe, chimney, boiler air preheater, gas-saving, heat exchanger, condensation cooler, evaporator, etc. Its superior sulfuric acid dew point corrosion resistance and very high cost performance are the best materials that can completely replace stainless steel and surpass stainless steel (in sulfuric acid dew point corrosion resistance). ND steel is of great economic significance, which is in line with the current "green" concept of high efficiency, long life, energy saving and environmental protection and the guidance of National Development policy. ND steel, 09CrCuSb steel, is the most ideal steel for "low temperature dew point corrosion resistance of sulfuric acid" at home and abroad. ND steel is widely used to manufacture economizers, air preheaters, heat exchangers and evaporators serving in high sulfur-containing flue gas, and to resist dew point corrosion of sulfur-containing flue gas. ND steel also has resistance to chloride ion corrosion. The main reference index of ND steel pipe (soaking in 50% H2SO4 solution at 70 degrees Celsius for 24 hours) is higher than that of carbon steel, similar steel imported from Japan and stainless steel. The products have been widely praised by major refineries and manufacturing units in China. The carbon content in steel is low, and good results have been obtained.

具體數(shù)據(jù)見下表：

The specific data are shown in the table below.

ND鋼腐蝕率比較，mg/c㎡.h(70℃50%H2SO4)

Comparing the corrosion rate of ND steel, mg/c. h (70 C 50% H2SO4)

鋼種 ND CRIR(日本） 1Cr18Ni9 Corten 20G

Steel ND CRIR (Japan) 1Cr18Ni9 Corten 20G

腐蝕速率 7.30 13.40 21.70 63.00 103.50

Corrosion rate 7.30 13.40 21.70 63.00 103.50

廣泛應(yīng)用于電廠和煉油廠制造在高含硫煙氣中工作的省煤器、空 氣預(yù)熱器、熱交換器和蒸發(fā)器等用以抵御含硫煙氣結(jié)露腐蝕。

It is widely used in power plants and refineries to manufacture economizers, air preheaters, heat exchangers and evaporators working in high sulphur-containing flue gas to resist condensation corrosion of sulphur-containing flue gas.