Markal 86841 Thermomelt Heat Stik Temperature Indicator Marker 600 F 316 C 4-1/2 Inch

Thermomelt Heat Stik temperature indicator from Markal at 125 F (52 C), 4-1/2 inch stick. Mark melts when rated temperature is reached for welding preheat and process monitoring.

Thermomelt Heat Stik from Markal at 450 F (232 C), 4-1/2 inch. Marks weld preheat zones in chrome-moly and alloy steel pipe fabrication.

Thermomelt Heat Stik from Markal at 250 F (121 C), 4-1/2 inch stick. Confirms preheat is reached on weld joints in pipe, structural, and pressure vessel fabrication.

Thermomelt Heat Stik from Markal at 225 F (107 C), 4-1/2 inch. Marks weld preheat zones for temperature verification in carbon and alloy steel work.

Thermomelt Heat Stik from Markal at 700 F (371 C), 4-1/2 inch. Used in welding preheat verification on chrome-moly pipe and high-temperature alloy components.