實驗室PP阻燃通風管道是化工管道***的管材

PP Flame Retardant ventilation pipe is the first choice for chemical pipeline

隨著實驗室PP阻燃通風管道新的材料出現，發(fā)展思路都發(fā)生變化，向綠色環(huán)保發(fā)展，發(fā)掘更多可循環(huán)再用的材料，不斷學習、創(chuàng)新才能才夾縫中生存才能在眾多的生產廠家中脫穎而出，讓自己在激烈的競爭中不被淘汰且穩(wěn)定提升自己的市場地位。實驗室PP阻燃通風管道材具有很***的耐硫酸性能，它能耐濃度在98%以下的硫酸。采用實驗室PP阻燃通風管道道材料是一種更為經濟的選擇。鹽酸決***多數金屬材料都不耐鹽酸腐蝕(包括各種不銹鋼材料)，含鉬高硅鐵也僅可用于50℃、30%以下鹽酸。

With the emergence of new materials for PP flame-retardant ventilation pipes in the laboratory, the development ideas have changed. They are developing towards green and environmental protection, exploring more recyclable materials, learning and innovation to survive in the cracks can stand out among many manufacturers, so that they can not be eliminated in the fierce competition and steadily improve their market position. PP Flame Retardant ventilation pipe material in the laboratory has good sulfuric acid resistance. It can withstand sulfuric acid with concentration below 98%. It is a more economical choice to use PP Flame Retardant ventilation duct material in laboratory. Most of the metal materials are not resistant to hydrochloric acid corrosion (including various stainless steel materials), and the molybdenum containing high silicon iron can only be used for hydrochloric acid below 50 ℃ and 30%.

化工介質的高腐蝕就是化工管道***嚴重的危害之一，如果選材不當，輕則損壞管道設備，影響生產，嚴重的會造成重***事故甚至引發(fā)不可預知的污染環(huán)境。據***家安監(jiān)局統(tǒng)計，化工管道設備的損壞約有60% 是由于介質腐蝕和老化造成的，因此在實驗室PP阻燃通風管道閥門選擇時***先要注意選擇材料的科學性，否則后果不堪設想。因此輸送硫酸的泵閥通常采用高硅鑄鐵(鑄造及加工難度***)、高合金不銹鋼(20號合金)制造，但是價格也會很高，且容易造成泄漏腐蝕，而實驗室PP阻燃通風管道路材料就可以完全避免這一點。很多人都認為不銹鋼耐腐蝕強度高是化工介質輸送的“***材料”，不論什么介質和使用環(huán)境條件都用不銹鋼管道閥門，這是很不理智的。和金屬材料相反，***多數化工塑料材料對鹽酸都有******的耐腐蝕性，所以內襯橡膠閥門和塑料閥門(如聚丙烯、氟塑料等)是輸送鹽酸的***選擇。硝酸一般金屬材料***多在硝酸中被迅速腐蝕破壞，不銹鋼是應用***廣的耐硝酸材料。

The high corrosion of chemical medium is one of the most serious hazards of chemical pipeline. If the material is improper, the pipeline equipment will be damaged and the production will be affected. Serious accidents will even lead to unpredictable pollution of the environment. According to the statistics of the State Administration of work safety, about 60% of the damage of chemical pipeline equipment is caused by medium corrosion and aging. Therefore, when selecting the valve of PP Flame Retardant ventilation pipeline in the laboratory, we should first pay attention to the scientificity of the material selection, otherwise the consequences will be unimaginable. Therefore, the pump valve used to transport sulfuric acid is usually made of high silicon cast iron (difficult to cast and process), high alloy stainless steel (alloy 20), but the price will be very high, and it is easy to cause leakage corrosion, which can be completely avoided by the PP flame-retardant ventilation pipe road material in the laboratory. Many people think that the high corrosion resistance of stainless steel is the "universal material" for chemical medium transportation. It is unreasonable to use stainless steel pipe valves no matter what medium and use environment conditions. In contrast to metal materials, most chemical plastic materials have good corrosion resistance to hydrochloric acid, so rubber lined valves and plastic valves (such as polypropylene, fluoroplastics, etc.) are the best choice for conveying hydrochloric acid. Most of the general metal materials of nitric acid are destroyed by rapid corrosion in nitric acid. Stainless steel is the most widely used nitric acid resistant material.

對常溫下一切濃度的硝酸都有******的耐蝕性，值得一提的是含鉬的不銹鋼(如316、316L)對硝酸的耐蝕性不僅不***于普通不銹鋼(如304、321)，有時甚至不如。而對于高溫硝酸，只有采用鈦及鈦合金材料，而鈦材料也不宜加工。醋酸它是有機酸中腐蝕性***強的物質之一，普通鋼鐵在一切濃度和溫度的醋酸中都會嚴重腐蝕，不銹鋼是******的耐醋酸材料，含鉬的316 不銹鋼還能適用于高溫和稀醋酸蒸汽。對于高溫高濃醋酸或含有其它腐蝕介質等苛刻要求時，實驗室PP阻燃通風管道材時***的選擇。

It has good corrosion resistance to all concentrations of nitric acid at room temperature. It is worth mentioning that the corrosion resistance of molybdenum containing stainless steel (such as 316, 316L) to nitric acid is not only not better than that of ordinary stainless steel (such as 304, 321), sometimes even worse. For high temperature nitric acid, only titanium and titanium alloy materials are used, and titanium materials are not suitable for processing. Acetic acid is one of the most corrosive substances in organic acids. Ordinary steel will be severely corroded in all concentrations and temperatures of acetic acid. Stainless steel is an excellent acetic acid resistant material. 316 stainless steel containing molybdenum can also be used in high temperature and dilute acetic acid steam. For high temperature and high concentration acetic acid or containing other corrosive media and other harsh requirements, the best choice for PP flame-retardant ventilation pipe material in the laboratory.