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Application of ITW Tiantai Welding Nickel-based Flux Cored Wire in Surfacing of Pressure Vessel Inner Wall



In the fields of petroleum refining and natural gas processing, many reaction vessels need to be operated under high temperature, high pressure and hydrogen conditions. In order to avoid corrosion of the inner surface of the pressure vessel by H22S, it is necessary to weld the corrosion resistant alloy on the inner wall of the reactor. TFW-625 flux-cored wire (model classification: ASME SFA5.34 ENiCrMo3T1-4) produced by ITW Tiantai welding consumables is mainly composed of molybdenum tantalum and has excellent corrosion resistance and oxidation resistance. It has a low temperature to 980 °C. High strength, toughness, fatigue strength and oxidation resistance. It is resistant to both oxidizing acid media and reducing acid media. In the petrochemical equipment and natural gas processing equipment with harsh operating conditions, TFW-625 flux-cored wire can meet the requirements of intergranular corrosion, stress corrosion and pitting, and has been widely used in large-scale petrochemical equipment manufacturing projects at home and abroad.



TFW-625 surfacing application performance data



Project example


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