Ceramic Layer Requirements For Ceramic Wear-resistant Pipe Lining

The precision and uniformity of the thickness of the ceramic layer lining the ceramic wear-resistant tube, as its core wear-resistant component, are crucial. In the length direction, we require that the thickness tolerance of the ceramic layer must be strictly controlled within a range of no more than 1.0 millimeter per meter, which ensures the stability and wear resistance of the pipeline during long-term use. On the circular cross-section, the radial non-uniformity tolerance is strictly limited to within ± 0.8 millimeters. This fine tolerance requirement ensures the uniformity of the ceramic layer in the circumferential direction, further improving the overall performance of the pipeline.
As for the thickness of the ceramic layer, we specify it as 4 millimeters and require that the thickness deviation should not exceed ± 1 millimeter. This regulation ensures sufficient thickness of the ceramic layer to meet wear resistance requirements, while also ensuring its accuracy in the manufacturing process and reducing potential risks caused by uneven thickness.
In the elbow section, in order to ensure the integrity of the ceramic layer and smooth welding, we have added straight pipe sections in both the inlet and outlet directions. For DN175 pipelines, the length of the straight pipe section is 150 millimeters; For DN250 pipelines, this length increases to 200 millimeters. In addition, the angle tolerance of the bent pipe is strictly controlled within ± 15 ', and the tolerance of the curvature radius is also limited to ± 3 millimeters. These precise tolerance requirements ensure the accuracy and smoothness of the bent part.
Finally, in order to protect the ceramic layer from damage during the welding process, we require that the end faces of pipes and fittings use V-shaped grooves with blunt edges. The unilateral angle of this groove is set to 30-35 °, with a depth of 2/3 of the selected steel pipe wall thickness, and a blunt edge not exceeding 4 millimeters. This design not only effectively protects the ceramic layer, but also improves the quality and efficiency of welding.