Cross-linked polyethylene pipe

1. A cross-linked polyethylene pipe comprising a multimodal ethylene homopolymer with a density of at least 950 kg/m 3 obtained by polymerization with a single-site catalyst only and comprising:

a shear thinning index SHI 2.7/210 of less than 10;

an ash content of less than 250 ppm, and

wherein said pipe comprises a pressure test performance at 4.8 MPa and 95° C. of at least 500 h and at 12.4 MPa and 20° C. of at least 500 h,

wherein said multimodal ethylene homopolymer is not cross-linked with silane,

wherein the multimodal ethylene homopolymer consists of a bimodal ethylene homopolymer, and

wherein the multimodal ethylene homopolymer is the only olefinic material in the cross-linked polyethylene pipe.

2. The cross-linked polyethylene pipe as claimed in claim 1 , wherein the density of the bimodal ethylene homopolymer is in the range of more than 950 kg/m 3 to 958 kg/m 3 .

3. The cross-linked polyethylene pipe as claimed in claim 1 , wherein the bimodal ethylene homopolymer comprises an SHI 2.7/210 of less than 5.

4. The cross-linked polyethylene pipe as claimed in claim 1 , wherein the bimodal ethylene homopolymer comprises an MFR 21 of 2 to 10 g/10 min.

5. The cross-linked polyethylene pipe as claimed in claim 1 comprising a cross-linking degree of at least 60%.

6. The cross-linked polyethylene pipe as claimed in claim 1 comprising a pressure test performance at 4.8 MPa and 95° C. of at least 750 h and at 12.4 MPa and 20° C. of at least 700 h.

7. The cross-linked polyethylene pipe as claimed in claim 1 , wherein the bimodal ethylene homopolymer is made in a multistage process.

8. The cross-linked polyethylene pipe as claimed in claim 1 , wherein the bimodal ethylene homopolymer is cross-linked by irradiation.