从对我们的植物和庄稼种植提供的化肥,到护肤类和牙齿美白产品,化肥工业中有关尿素及铵的生产工艺是我们在生活中不可或缺的组成部分。

化肥生产过程中,会产生极易腐蚀的环境,例如在180°C~250°C,加上150个 大气压下生产的甲铵。

例如硝酸,硫酸,磷酸还有三聚氰胺的生产,对于传统不锈钢等级,如 304L/316L不锈钢制管的使用,需要更复杂的解决方案。

从冷凝器到冷却塔,潜伏在化工厂内的有多种不同类型的腐蚀环境。

Austenitic

MST designationAttributeNearest equivalent standardTypical chemical composition 1)DensityMin. mechanical prop. at RT
  UNSENJISCmaxCrNiMoCuothers  Rp0.2 Yield StrengthRm Tensile Strength
           g/cm3lb/in3MPaksiMPaksi
DMV 304LCorrosion Resistant S304031.4306SUS 304L0.0319.011.07.90.291702548570
DMV 316LUGCorrosion Resistant S316031.4435 0.0217.013.54.5  8.00.291702548570
DMV 306SiCorrosion Resistant S306001.43610.01518.015.0Si 47.90.292403554078
DMV 4439Corrosion Resistant (S31726)1.4439 0.0317.513.54.5 N 0.168.00.292403555080
DMV 4335Corrosion Resistant S310021.43350.01525.020.5N<0.107.90.292553754078
DMV 25.22.2Corrosion Resistant S310501.4466 0.0225.022.02.0 N 0.127.90.292553754078
DMV 310SCorrosion Resistant S310081.48450.01525.021.07.90.292053051575
DMV 904Corrosion ResistantN089041.4539 0.0220.525.54.51.5 8.00.292153149071

1) All figures in weight percentage. In case of order, the limits of the order specification will apply.

Nickel Based Alloys

MST designationAttributeNearest equivalent standardTypical chemical composition 1)DensityMin. mechanical prop. at RT
  UNSENCmaxCrNiMoCuothers  Rp0.2 Yield StrengthRm Tensile Strength
          g/cm3lb/in3MPaksiMPaksi
DMV 928Corrosion Resistant N080281.45630.0227.031.03.51.2N 0.108.00.292103150073
DMV 931Corrosion Resistant N080311.45620.01527.031.06.51.2N 0.208.10.292804165094
DMV 59Corrosion Resistant N060592.46050.0123.059.016.0Al8.60.3134050690100
DMV C276Corrosion Resistant N102762.48190.0116.057.016.0W8.40.3035051750109

1) All figures in weight percentage. In case of order, the limits of the order specification will apply.

汽提器

氨基甲酸冷凝器

管材:U型管或是直管,最长长度为43米(110英尺)长

Bimetallic Tubes

双层管是用来解决有关尿素汽提器所涉及到的最恶劣的环境。此类产品由外管 DMV 25.22.2 和内管壁的锆级702构成,我们研发的这项加工技术能确保双金属在冷加工过程中完美的粘合。

Bimetallic pipes and process pipework in typical dimensions up to 31 mm (1.22”) OD.