This type of mix is used in a broad range of applications but with no guaranteed design strength and range from an ST1 to ST5 with set cement content.

ST1
This type of concrete mix is used in a broad range of applications such as kerb backing, slab work etc.

ST2
ST2 ready mix concrete is used in a broad range of applications such as slab work and kerb backing.

ST3
Used in a broad range of applications, including kerb backing and slab work, ST3 is a standard mix (or ST) concrete mix with set cement contents as defined in BS 8500-2, but has no guaranteed design strength.

ST4
ST (or standard mix) concrete mixes are used in a broad range of applications, most noticeably for slab work and kerb backing.

ST5
ST5 concrete mix is used for a wide range of applications, including kerb backing and slab work, but comes with no guaranteed design strength.