Americal Society for Testing and Materials (ASTM) has researched and defined various material standards for oil and gas industry. Properties of these materials depend on chemical properties of fluids to be handled, design temperatures and pressure as well of method of manufacture of pipe fittings. Many piping fittings like valve bodies, cast fittings are made from castings as per ASTM standards. Here is a list of such ASTM Standards for castings used for fittings made through process of casting.
| Sr. | Number | Title |
| 1 | A216 | Standard Specification for Steel Castings, Carbon, Suitable for Fusion Welding, for High-Temperature Service. |
| 2 | A217 | Standard Specification for Steel Castings, Martensitic Stainless and Alloy, for Pressure-Containing Parts, Suitable for High-Temperature Service. |
| 3 | A352 | Standard Specification for Steel Castings, Ferritic and Martensitic, for Pressure-Containing Parts, Suitable for Low-Temperature Service. |