In addition, tube dimensions and sizes are typically based on the outside diameter or width of the tube ... Pressure rating defines the minimum or maximum pressures the tube is designed to withstand, ...
The standard shapes include circular, oval, rectangular, and square, though there are many additional custom shapes. Circular tubes are the most common because they provide even strength distribution ...
In comparing Square and PayPal, both credit card processing services provide easy setups and similar pricing structures. However, there are distinct characteristics that make each stand out.