Welding consumables for COT corrosion-resistant steel

COT corrosion-resistant steel supporting welding materials are mainly used for the welding of COT corrosion-resistant steel, which is one of the important components of the construction of oil tank cargo tanks for offshore oil transportation in offshore engineering, including welding rod CJ507NS, flux-cored welding wire YCJ50NS and submerged arc welding wire MJ50NS. According to the corrosion characteristics of the inner bottom plate and the upper deck, different technical solutions are adopted to solve the Cl-pitting corrosion of the inner bottom plate of the cargo oil tank and the hydrogen sulfide corrosion of the upper deck under the crude oil corrosion environment. The weld joint has excellent corrosion resistance, The formation of the ability to provide a series of welding seam materials for different marine corrosion-resistant steels will play a positive role in breaking the technological monopoly of Japan and other countries in this field.