Chemical composition detection is to analyze the chemical element composition of materials by metallographic analysis to determine the content of its constituent elements, and then analyze the performance of materials in the process of processing and use. It is very important to analyze the chemical composition of the valve materials, and correctly sample and prepare the samples. The samples should be able to represent the batch of products they adhere to. The physical properties (structure, density, surface, etc.) and chemical composition of the samples should be relatively uniform, without oxidation, pollution, and inclusion. For different purpose valves, select the corresponding materials to ensure the quality of the valve and the performance of the long-term use process, which is not easy to crack, leak, failure and other hazards.
Standard number | Standard name |
GB 699-1999 | Specification for high quality carbon structural steel |
GB/T 700-2006 | Carbon structural steel |
GB 713-2008 | Steel plates for boilers and pressure vessels |
GB/T 1176-1987 | Specification for cast copper alloy |
GB/T 1220-2007 | The stainless steel rod |
GB/T 1222-2007 | Spring steel |
GB/T 3077-1999 | Specification for alloy structural steel |
GB 3531-2008 | Low alloy steel plate for low temperature pressure vessel |
GB 4237-2007 | Hot rolled stainless steel plate |
GB/T 4423-2007 | Copper and copper alloy drawing rod |
GB 5310-2008 | Seamless steel tube for high pressure boiler |
GB/T 8163-2008 | Seamless steel pipe for fluid transport |
GB 9948-2008 | Seamless steel pipe for petroleum cracking |
GB/T 12228-2006 | Specification for carbon steel forgings for general purpose valves |
GB/T 12229-2005 | Specification for carbon steel castings for general purpose valves |
GB/T 12230-2005 | Specification for stainless steel castings for general purpose valves |
GB/T 14976-2002 | Stainless steel seamless steel pipe for fluid transportation |
GB/T 16253-1996 | Pressure steel casting |
JB 4726-2000 | Carbon steel and low alloy structural steel forgings for pressure vessels |
JB 4727-2000 | Carbon steel and low alloy structural steel forgings for low temperature pressure vessels |
JB 4728-2000 | Stainless steel forgings for pressure vessels |
JB/T 5263-2005 | Specification for steel castings of power station valves |
JB/T 7248-2008 | Specification for low temperature steel castings for valves |
JB/T 9625-1999 | Technical specification for pressure steel castings of boiler pipe accessories |
ASTM A105/A105M-2007 | Carbon steel forgings for pipe parts |
ASTM A106/A106M-2007 | Seamless carbon steel pipe for high temperature |
ASTM A182/A182M-2007 | Forged or rolled alloy steel pipe flanges, forged fittings, valves and components for high temperature service |
ASTM A203/A203M-2007 | Nickel alloy steel plate for pressure vessel |
ASTM A216/A216M-2007 | Carbon steel castings suitable for fusion welding at high temperature |
ASTM A217/A217M-2007 | Martensitic stainless steel and alloy steel castings for high temperature pressure parts |
ASTM A240/A240M-2007 | Heat resistant chromium and chromium nickel stainless steel plate, sheet and strip for pressure vessels |
ASTM A312/A312M-2007 | Seamless or welded and Heavily Cold Worked Austenitic stainless steel pipes |
ASTM A333/A333M-2007 | Seamless and welded steel tubes for low temperature service |
ASTM A335/A335M-2007 | Seamless Ferritic Alloy steel pipe for high temperature equipment |
ASTM A350/A350M-2007 | Carbon and low alloy steel forgings for piping components requiring notch toughness testing |
ASTM A351/A351M-2007 | Austenitic steel castings for pressure parts |
ASTM A352/A352M-2007 | Ferritic and martensitic steel castings for low temperature pressure applications |
ASTM A387/A387M-2007 | Chromium molybdenum alloy steel for pressure vessels |
ASME A515/A515M-2007 | Carbon steel plates for medium and high temperature pressure vessels |
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