The Canadian Registration Number (CRN)  is a number issued by each province/territory in Canada to the design of boilers, pressure vessels or fittings. Industrial instrumentation such as pressure gauges, thermometers and related accessories all fall under this jurisdiction. The CRN identifies that the design has been accepted and registered for use in that province/territory.

加拿大注冊號（CRN）是由加拿大省/地區(qū)發(fā)布鍋爐設(shè)計(jì)一個數(shù)字，壓力容器或配件。工業(yè)儀表如壓力表、溫度計(jì)及相關(guān)配件都屬于這種管轄權(quán)。CRN標(biāo)識設(shè)計(jì)已被注冊使用，省/地區(qū)。