A polyethylene resin for a pipe, which satisfies the following requirements (a) to (d): (a) a high-load melt flow rate (HLa) is 5 to 20 g/10 min; (b) a density (Da) is 0.945 to 0.965 g/cm 3; (c) a content of an α-olefin having 3 to 12 carbon atoms (Ca) is 0.05 to 1.5 mol%; and (d) a breaking time measured by notched Lander ESCR, the HLa, and the Ca satisfy the following formula: logT ≥ - 2.9 x logHLa + 5.1 x logCa + 6.8 wherein the polyethylene resin comprises: a polyethylene polymer having a high-load melt flow rate (HLb) of 0.01 to 3 g/10 min and a content of α-olefin having 3 to 12 carbon atoms (Cb) of 3.0 mol% or lower, the amount ratio for polymerization (Xb) of the polymer being 20 to 60% by weight; and a polyethylene polymer having a melt flow rate (MFRc) of 1 to 1,000 g/10 min and a content of α-olefin having 3 to 12 carbon atoms (Cc) of 0.5 mol% or lower, the amount ratio for polymerization (Xc) of the polymer being 40 to 80% by weight; wherein the polyethylene polymer and the polyethylene polymer comprise a main α-olefin having 6 or more and 12 or less carbon atoms, the main α-olefin being the α-olefin which gives short branches existing in a largest number; wherein the polyethylene polymer and the polyethylene polymer satisfy the following relationship: (α-olefin content of the polyethylene polymer) / (α-olefin content of the polyethylene polymer) ≤ 0.20; wherein the polyethylene resin is one produced by a regular multistage polymerization which comprises: first producing the polyethylene polymer; subsequently transferring the reaction liquid containing the polyethylene polymer to a next polymerization reaction vessel directly; and producing the polyethylene polymer; and wherein the polyethylene resin is one obtained by a multistage polymerization using a Ziegler catalyst. (a) a high-load melt flow rate (HLa) is 5 to 20 g/10 min; (b) a density (Da) is 0.945 to 0.965 g/cm 3; (c) a content of an α-olefin having 3 to 12 carbon atoms (Ca) is 0.05 to 1.5 mol%; and (d) a breaking time measured by notched Lander ESCR, the HLa, and the Ca satisfy the following formula: logT ≥ - 2.9 x logHLa + 5.1 x logCa + 6.8 wherein the polyethylene resin comprises: a polyethylene polymer having a high-load melt flow rate (HLb) of 0.01 to 3 g/10 min and a content of α-olefin having 3 to 12 carbon atoms (Cb) of 3.0 mol% or lower, the amount ratio for polymerization (Xb) of the polymer being 20 to 60% by weight; and a polyethylene polymer having a melt flow rate (MFRc) of 1 to 1,000 g/10 min and a content of α-olefin having 3 to 12 carbon atoms (Cc) of 0.5 mol% or lower, the amount ratio for polymerization (Xc) of the polymer being 40 to 80% by weight; wherein the polyethylene polymer and the polyethylene polymer comprise a main α-olefin having 6 or more and 12 or less carbon atoms, the main α-olefin being the α-olefin which gives short branches existing in a largest number; wherein the polyethylene polymer and the polyethylene polymer satisfy the following relationship: (α-olefin content of the polyethylene polymer) / (α-olefin content of the polyethylene polymer) ≤ 0.20; wherein the polyethylene resin is one produced by a regular multistage polymerization which comprises: first producing the polyethylene polymer; subsequently transferring the reaction liquid containing the polyethylene polymer to a next polymerization reaction vessel directly; and producing the polyethylene polymer; and wherein the polyethylene resin is one obtained by a multistage polymerization using a Ziegler catalyst. (α-olefin content of the polyethylene polymer) / (α-olefin content of the polyethylene polymer) ≤ 0.20; wherein the polyethylene resin is one produced by a regular multistage polymerization which comprises: