Answer :
Final answer:
The ASTM specification for the type and grade of material, including the P-number, is ASTM A106. This specifies seamless carbon steel pipe for high-temperature service.
Explanation:
The ASTM specification for the type and grade of material, including the P-number, is designated by ASTM A106. ASTM, which stands for the American Society for Testing and Materials, assigns different alphanumeric codes to represent the specifications for various materials. In this case, ASTM A106 refers specifically to seamless carbon steel pipe for high-temperature service. These types of specifications are commonly used within the engineering and materials fields to ensure standardization and quality of materials.
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