The reducing tee is made of an exterior steel shell with an inside PTFE liner. With this structure, the remarkable chemical resistance and non-stick qualities of PTFE are combined with the mechanical strength of steel.Please get in touch with Tongtong for further details on the DN 800 Tee.
link:https://www.ttptfe.com/steel-lining-ptfe-pipes-and-fittings/dn-800-tee.html