Hand scraper When using hand scrapers - perform long even scrapes starting from outside the marked areas to avoid “cratering” in the fusion zone of the fitting until all marks are removed. Rotational scraper One scraping pass is to be carried out in order to remove approx. 0.2 to 0.3 mm of the outer pipe surface. If the pipe diameter is still too large, additional scraping may be performed in order to facilitate insertion, as long as the average pipe diameter is kept above minimum. Do not use metal files or sand paper for outer layer removal, these are not dedicated scraping tools and might adversely affect the weld performance. Wipe the prepared pipe surface only with a recommended alcohol wipe to remove any dust residue and other contaminants. For larger diameter pipes use multiple alcohol wipes. Cleaning of the prepared surface is a critical step and one that has the potential to introduce contaminates if not done correctly - remember this is the surface that is about to be welded and the presence of contaminants will result in a poorly welded joint. To avoid contamination, ONLY wipe the peeled fusion zone area. Clean with Plasson pipe wipes and allow to fully dry before proceeding. Important, do not touch the scraped area with bare hands after scraping and cleaning! Rotational Scraper / Hand scraper
1. Rotational scraper 2. Hand scraper
3. Do not touch the scraped area with bare hands after scraping and cleaning
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