1. Material requirements: The material requirements for seamless carbon steel pipes are No. 20, No. 25, and No. 30 steel. Among them, No. 20 steel has better corrosion resistance and is suitable for ships with harsh operating environments.
2. Manufacturing method: Seamless carbon steel pipes for ships use cold-drawn or hot-rolled seamless manufacturing processes. After being made, the steel pipes need to be pickled, painted and other surface treatments are carried out.
3. Physical properties: The physical properties of seamless carbon steel pipes for ships must comply with the requirements specified in the standard, including tensile strength, yield strength, elongation and other indicators.
4. Chemical composition: The chemical composition of seamless carbon steel pipes for ships must meet the requirements of the standard, and the carbon content should be between 0.17% and 0.24%.
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