Markal 86823 Thermomelt Heat Stik Temperature Indicator Marker 550 F 288 C 4-1/2 Inch

Thermomelt Heat Stik from Markal at 500 F (260 C), 4-1/2 inch. Confirms preheat on welds requiring elevated temperature in alloy and chrome-moly pipe work.

Thermomelt Heat Stik from Markal at 650 F (343 C), 4-1/2 inch. Confirms preheat on heavy-wall alloy steel pipe and pressure vessel welds.

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.

Thermomelt Heat Stik from Markal at 325 F (163 C), 4-1/2 inch. Marks preheat and interpass temperatures on weld joints in alloy steel fabrication.

Thermomelt Heat Stik from Markal at 400 F (204 C), 4-1/2 inch. Confirms preheat and interpass temperatures during welding of structural and pressure vessel steel.