Seamless carbon steel pipe for ships
Keywords: seamless carbon steel pipe for ships
Seamless carbon steel pipe for ships
Seamless carbon steel pipe for ships refers to a seamless pipe material used in ship construction and maintenance. Its main feature is that it is made of carbon steel, which has high strength and corrosion resistance. GB5312-85 is a standard promulgated by the China Standardization Organization, which stipulates the technical requirements and test methods for carbon steel seamless pipes for ships.
Skills requirement:
The technical requirements for carbon steel seamless pipes for ships mainly include the following aspects:
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%.
Experiment method:
The test methods for seamless carbon steel pipes for ships mainly include the following aspects:
1. Appearance inspection: Check whether there are cracks, defects, oxide scale, etc. on the surface of the steel pipe.
2. Chemical composition analysis: Use chemical analysis methods to detect whether the chemical composition of the steel pipe meets the standard requirements.
3. Mechanical performance test: including tensile test, compression test, bending test, etc., to detect whether the physical properties of the steel pipe meet the standard requirements.
Seamless carbon steel pipe for ships is an indispensable material in the process of ship construction and maintenance. Strict control of its quality and technical requirements is crucial to the safe operation of ships.
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