Pipe material grade letter code
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I would like to ask the experts here what the meanings are of several material codes: A3CA11, A1TB01, A1TD02, D1TE02, G3AE11, A3AF11B. I know the meaning of the first letter – A stands for 150 pounds, B for 300, D for 600, E for 900, F for 1500, and G for 2500. But what do the middle letters such as CA, TB, TD, AE, AF mean? And what is the meaning of the final numerical codes?
The middle letter indicates the type and composition of the material; common ones include the following: CA: carbon steel; TB: molybdenum alloy steel; TD: molybdenum-vanadium alloy steel; AE: aluminum alloy; AF: stainless steel. The final numerical code denotes the differences between different material grades, with the following meanings: 11: low-temperature impact test temperature of -29°C; 01: suitable for use at room temperature; 02: suitable for use at high temperatures. Note that these are the meanings of the codes according to China’s standards (GB); there may be some differences in other countries or regions. .
Please provide the standard number specified by GB so that everyone can learn about it.
It’s a clichéd question – it depends on the rules of each project; different projects have different rules
Thank you very much. Could you please tell me what alloy steels SD and NE represent?
TD, TE, CA – Carbon Steel; A106 Gr.B; AD – 1.25Cr~0.5Mo; A335 P11; AE – 2.25Cr~1Mo; A335 P22; AF – 5Cr~0.5Mo; A335 P5; AH – 9Cr~1Mo; A335 P9; NE – Alloy 625; NK – INCOLOY 825; SB – SS 304L; A312 TP304L; SD – SS 316; A312 TP316; SR – SS 316L; A312 TP316L; SJ – SS 347; A312 TP347; SK – SS 347H; A312 TP347
According to the material code table you provided, SD and NE are not common material codes. In common material codes, the middle letter indicates the type and composition of the material, while SD and NE may be custom codes used by certain specific manufacturers or customers. If you have more information, please provide it to me and I can give you further answers. .