A fastening-type pipe supporting apparatus for supporting a curved pipe against loads acting on a curved portion of the pipe, the fastening-type pipe supporting apparatus comprising: a first clamp having a semicircular cross-section which extends along a curved shape and having a curved surface with a curvature to surround the curved portion of the pipe, the first clamp comprising first connection portions protruding from both lateral ends of the first clamp and comprising a plurality of first connection holes; a second clamp having a semicircular cross-section which extends along a curved shape and having a curved surface with a curvature to surround the curved portion of the pipe, the second clamp being coupled to the first clamp, and the second clamp comprising second connection portions protruding from both lateral ends of the second clamp and comprising a plurality of second connection holes; and a plurality of connection bolts coupling the first clamp with the second clamp, wherein the plurality of connection bolts are inserted into the first connection holes and the second connection holes; characterized in that: the first connection portions extend along the curved surface of the first clamp and the second connection portions extend the along the curved surface of the second clamp; and the apparatus further comprises a plurality of washers placed around the connection bolts, wherein sides of the washers in contact with the first and second connection portions (111 and 121) are curved with a curvature according to the curved surfaces of the first and second clamps (110 and 120) and the other sides of the washers are flat. a first clamp having a semicircular cross-section which extends along a curved shape and having a curved surface with a curvature to surround the curved portion of the pipe, the first clamp comprising first connection portions protruding from both lateral ends of the first clamp and comprising a plurality of first connection holes; a second clamp having a semicircular cross-section which extends along a curved shape and having a curved surface with a curvature to surround the curved portion of the pipe, the second clamp being coupled to the first clamp, and the second clamp comprising second connection portions protruding from both lateral ends of the second clamp and comprising a plurality of second connection holes; and a plurality of connection bolts coupling the first clamp with the second clamp, wherein the plurality of connection bolts are inserted into the first connection holes and the second connection holes; characterized in that: the first connection portions extend along the curved surface of the first clamp and the second connection portions extend the along the curved surface of the second clamp; and the apparatus further comprises a plurality of washers placed around the connection bolts, wherein sides of the washers in contact with the first and second connection portions (111 and 121) are curved with a curvature according to the curved surfaces of the first and second clamps (110 and 120) and the other sides of the washers are flat. the first connection portions extend along the curved surface of the first clamp and the second connection portions extend the along the curved surface of the second clamp; and the apparatus further comprises a plurality of washers placed around the connection bolts, wherein sides of the washers in contact with the first and second connection portions (111 and 121) are curved with a curvature according to the curved surfaces of the first and second clamps (110 and 120) and the other sides of the washers are flat.