Hi Oliver,
Thanks for your review.
We are sorry to hear that the engineer refused to carry out installation with the pipe in question. We would however stress that our flue pipes are made from low-carbon steel and are manufactured in accordance with HETAS guidance and ISO9001-2008, as well as having an internal and external vitreous coating to meet the requirements of BSEN ISO 28706 – 1:2011.
If we can offer any particular advice or assistance in terms of suitable items, don't hesitate to get in touch.
Kind regards,
Direct Stoves & Fireplaces