Technical characteristics: Special execution of self-centred rings that speed up welding on straight pipes. Material: high chromium alloy (DIN-42Cr4 / DIN-100Gr6) or high quality structural steel (DIN-C45E / DIN-C22E). Model: 2-8 inch, quality control department carry out strict tolerance testing, guarantee accuracy of products size. Inter layer material: high chromium alloy (DIN-42Cr4 / DIN-100Gr6). Outer layer material: high quality structural steel (DIN-C45E / DIN-C22E). Other details can be seen in Twin Wall Pipeline.
