Penn Stainless stocks square ornamental tubing in a number of standard sizes and grades, inducing in 304, 304L and 316/316L.
Measurement system analysis. A measurement systems analysis (MSA) is a specially designed experiment that seeks to identify the components of variation in the measurement. Just as processes that produce a product may vary, the process of obtaining measurements and data may have variation and produce defects.
The National Electrical Manufacturers Association (NEMA) is a US Manufacturers Organization which actively promotes. standardized product specifications for electrical apparatus. While NEMA does not actually test products, it establishes the. performance criteria for enclosures intended for specific environments.