Stainless steel butterfly valve manufacturers _ Jinhua _ stainless steel butterfly valve manufacturers choose Koichi

 [Koichi valve to recommend star products - stainless steel butterfly valve] corrosion analysis and solution of two reasons 1, Test Method of sampling for chemical composition analysis (to determine whether compliance with standards), microstructure inspection, testing and SEM analysis of the heat treatment process . 2, the test results and analysis 2.1 Chemical composition analysis and standard components. 2.2 butterfly emerge from a metallurgical analysis of corrosion phenomena cut the metallurgical samples welded stainless steel butterfly valves, polished by grinding with ferric chloride aqueous corrosion on significant emblem Neophot-32 metallurgical microscope analysis, the microstructure another composition of austenite precipitates. Theoretically, after normal heat treatment of austenitic stainless steel, should be uniform austenite. Another organization precipitates appeared in any organization whether it is stainless steel turbine valve, there are two judgments: one σ phase stainless steel valve manufacturers, the other is a carbide. Different σ phase and carbide formation conditions, but all have a common characteristic, that is causing the sensitivity of austenitic stainless steel to intergranular corrosion. [Koichi valve to recommend star products - stainless steel soft seal butterfly valve] main parts Parts name Material Body material of rubber, PTFE disc gray cast iron, nodular cast steel, cast steel, stainless steel and special materials ductile ring steel, cast steel, alloy steel, stainless steel stem 2Cr13, stainless steel packing O-rings, flexible graphite O soft seal butterfly valve material selection and variety of materials suitable temperature neoprene NBR EPDM Viton PTFE silicone rubber Code X or or J XA or or JA XB or or JB XC, the highest JC or or F XD or or or JE or JD XE-resistant temperature 82 ℃ 93 ℃ 150 ℃ 232 ℃ 250 ℃ 204 ℃ -40 ℃ -40 lowest temperature resistant ℃ -40 ℃ -268 ℃ -70 ℃ -23 ℃ working temperature suitable for ≤ 65 ℃ ≤ 80 ℃ ≤ 120 ℃ ≤ 200 ℃ ≤ 200 ℃ ≤ 180 ℃ stainless steel butterfly valve manufacturers _ Jinhua _ stainless steel butterfly valve manufacturers selected by the Koichi Koichi Valves available. If you have any questions about this information or consultation, please contact us now! Our Company Name: Tianjin Koichi valve Trading Company (www.tjhyfm.com) Contact: Zhang Zhi-cai, or click on "Business League call" direct dialogue with us!