Den Holder manufactures thermowells in each required materials and according every required standard drawing. This means the thermowells can be supplied in any required length with threaded ends, socket weld ends or flanged ends, in which case the welds are made by qualified welders and supported by welder qualification documents. Most common steels and stainless steels are on stock in order to make fast deliveries possible.


ASTM A182-F304 (L, H)
ASTM A182-F316 (L, H, Ti)
ASTM A182-F321 (H)
ASTM A182-F347 (H)
ASTM A182-F44, F51, F55
UNS S31803 (duplex),
UNS S32750 (super duplex)
254 Smo
ASTM A182-F1, F5, F9, F11, F22, F91
Alloy 400, 600, 625, 800, 825, C-276

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