A scaffolding system comprising: • standards each having an imaginary standard longitudinal central axis (L s), and further including: ∘ a cylindrical tube wall which is concentric with the standard longitudinal central axis (L s); ∘ supporting projections which, viewed in the direction of the standard longitudinal central axis (L s), are provided at regular distances on the outside surface of a said standard, wherein the supporting projections are formed through plastic deformation of the tube wall; • first ledgers each with an imaginary ledger longitudinal central axis and two extremities; • first ledger couplings which are each fixedly connected at the extremity of a first ledger to the first ledger, wherein the ledger couplings are configured for connecting the extremity of the first ledger to a standard, and wherein, with a first ledger in a condition coupled to a standard, the first ledger coupling of the respective first ledger rests on a said supporting projection; characterized by • orientation projections which, viewed in the direction of the standard longitudinal central axis (L s), are provided at regular distances on the outside surface of a said standard and which are each associated with an associated supporting projection, wherein the orientation projections are formed through plastic deformation of the tube wall; and • at least one orientation recess in each first ledger coupling wherein, with a first ledger in a condition coupled to the standard, the rotational position of the first ledger coupling relative to the standard is defined through reception of the orientation projection in the at least one orientation recess. • standards each having an imaginary standard longitudinal central axis (L s), and further including: ∘ a cylindrical tube wall which is concentric with the standard longitudinal central axis (L s); ∘ supporting projections which, viewed in the direction of the standard longitudinal central axis (L s), are provided at regular distances on the outside surface of a said standard, wherein the supporting projections are formed through plastic deformation of the tube wall; ∘ a cylindrical tube wall which is concentric with the standard longitudinal central axis (L s); ∘ supporting projections which, viewed in the direction of the standard longitudinal central axis (L s), are provided at regular distances on the outside surface of a said standard, wherein the supporting projections are formed through plastic deformation of the tube wall; • first ledgers each with an imaginary ledger longitudinal central axis and two extremities; • first ledger couplings which are each fixedly connected at the extremity of a first ledger to the first ledger, wherein the ledger couplings are configured for connecting the extremity of the first ledger to a standard, and wherein, with a first ledger in a condition coupled to a standard, the first ledger coupling of the respective first ledger rests on a said supporting projection; • orientation projections which, viewed in the direction of the standard longitudinal central axis (L s), are provided at regular distances on the outside surface of a said standard and which are each associated with an associated supporting projection, wherein the orientation projections are formed through plastic deformation of the tube wall; and • at least one orientation recess in each first ledger coupling wherein, with a first ledger in a condition coupled to the standard, the rotational position of the first ledger coupling relative to the standard is defined through reception of the orientation projection in the at least one orientation recess.