The Weak Black Liquor Self-Sticking Pipe Marker helps to meet the requirements of the ASME (ANSI) A13.1 Standard for the identification of piping system contents when used with directional flow arrow tape (sold separately). The self-sticking pipe marker is made of durable vinyl material and is ideal for indoor and outdoor environments. The Weak Black Liquor Pipe Marking can be used in either a current facility or new construction. The pipe label marking is designed for use on clean, dry pipes, -40°F to 180°F (-40°C to 82°F) with outside pipe diameter 2 1/2" to 7 7/8". The Weak Black Liquor Self-Sticking Pipe Marker’s material with coated backing makes handling and installation easy.