Designated as UNS N06035 or DIN 2.4643, Alloy G-35 is a nickel-chrimium-molybdenum alloy designed to resist “wet process” phosphoric acid, which is used in the production of fertilizers. Similar to Hastelloy G-30, G35 alloy also has excellent resistance to localized attack in the presence of chlorides, since this can be a problem beneath deposits in evaporators used to concentrate “wet process” phosphoric acid. Besides, it is much less susceptible to chloride-induced stress corrosion cracking than the stainless steels and nickel-chromium-iron alloys traditionally used in “wet process” phosphoric acid. Due to the high chromium content, Hastelloy G-35 is extremely resistant to other oxidizing acids, such as nitric, and mixtures containing nitric acid. It possesses moderate resistance to reducing acids, as a result of its appreciable molybdenum content, and, unlike other Ni-Cr-Mo alloys, it is very resistant to “caustic de-alloying” in hot sodium hydroxide.
Blanks Figure 8 Blanks Flange is a pipe fitting, which is mainly used for easy maintenance. You can know its specific shape by painting the upper part of the "8" black. It is half a blind plate and half an iron ring. It is often used in pipeline flanges that need to change the process. The main materials are carbon steel, stainless steel, and alloys. It can be selected according to the pipeline pressure level and pipeline medium. It is usually used on pipelines with larger diameters. Usually, one end of the flange is used to occupy the spacing to keep the pipeline unobstructed. When necessary, it is replaced with a blind plate of the same thickness at the other end to cut off the pipeline. Avoid forced expansion of the pipeline due to temporary replacement of other blind plates, affecting the entire system.