Rib knitting circular machines are commonly used for knitting fabrics with substantial stretch and recovery properties. Some of the common fabrics produced using rib knitting circular machines include:

1. Ribbed Knit Fabric: This classic fabric is characterized by vertical ridges or ribs on both sides of the fabric. It is commonly used for cuffs, collars, and waistbands, as well as for creating a snug fit in garments.

2. Interlock Knit Fabric: Interlock fabric is a double-knit construction that creates a stable and reversible fabric. It is widely used for T-shirts, activewear, baby clothing, and other garments that require stretch and drape.

3. Ribbed Jersey Fabric: Ribbed jersey has a similar appearance to ribbed knit fabric but is typically lighter in weight. It is often used for lightweight tops, tank tops, and dresses that require a comfortable and stretchy fit.

4. Double-faced Ribbed Fabric: This fabric has ribs on both sides, making it reversible and versatile. It is commonly used for creating reversible garments or for adding visual interest to cuffs, collars, and other details.

5. Ribbed Jacquard Fabric: Rib knitting circular machines can also be used to create ribbed jacquard fabrics, which incorporate intricate patterns and designs into the ribbed structure. This allows for the creation of textured and visually appealing fabrics for various applications.

It's important to note that rib knitting circular machines can handle a variety of yarn types, including cotton, wool, acrylic, and blends, allowing for versatility in fabric production.