Piping material specifications (PMs)

In summary, when selecting piping materials, it is crucial to consult the relevant code or standard and consider factors such as operating temperature, pressure, and fluid type.
  • #1
shahinmp
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Dear Engineers

I am very curious to know about Piping material specifications (PMs) .
How can I select the appropriate material for components which is used in piping? For example we use A106 Gr B for vapour pipes or A105 for flanges and A105/A234 for fittings less/bigger than 2". Now I want to know if the fluid changed to gas or oil or for example styrene monomer how I should choose these materials.
what is the main refrence for choosing these materials? Are ASME or Bs or ASTM standards used for this?

Thanks in advance!
 
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  • #2
When selecting piping materials for a particular application, the primary reference is the applicable code or standard. For example, the American Society of Mechanical Engineers (ASME) Boiler and Pressure Vessel Code (BPVC) is commonly used in the United States. The British Standards (BS) are also relevant for some applications. Additionally, the American Petroleum Institute (API) standards are used for oil and gas applications. ASTM standards are also relevant for certain applications. Once the appropriate code or standard has been determined, the selection of materials must be based on the operating temperature and pressure, as well as the type of fluid being transported. For example, if the fluid being transported is a gas or an oil, then materials such as A106 Gr B or A105 may be used for the pipes and flanges, while A105/A234 may be used for fittings less or bigger than 2". For styrene monomer, a different material may be required depending on the operating conditions. It is important to consult the applicable code or standard in order to determine the most suitable materials for a particular application.
 

1. What is a Piping Material Specification (PM)?

A Piping Material Specification (PM) is a document that outlines the requirements for the materials used in the construction of a piping system. It includes information such as material type, grade, size, and allowable pressure and temperature ratings.

2. Why are PMs important in the design and construction of piping systems?

PMs are important because they ensure that the materials used in a piping system are suitable for the intended application and meet safety and performance standards. They provide guidance for selecting materials that can withstand the required pressure, temperature, and corrosive conditions.

3. How are PMs developed?

PMs are typically developed by a team of engineers and designers who consider factors such as the type of fluid being transported, the operating conditions, and any regulatory requirements. They may also consult industry standards and codes to determine the appropriate materials for the piping system.

4. What are some common materials used in piping systems?

Some common materials used in piping systems include carbon steel, stainless steel, copper, plastic, and composite materials. The type of material used will depend on the specific requirements of the piping system and the properties of the fluid being transported.

5. Can PMs be revised or updated?

Yes, PMs can be revised or updated as needed. Changes may be necessary due to advancements in technology, changes in regulatory requirements, or new industry standards. It is important to regularly review and update PMs to ensure the safety and efficiency of piping systems.

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