Skellerup's capabilities to respond quickly with prototypes and deliver high quality products had increased sales, particularly of its parts for potable water units, Mr Mair said.
Shares in Skellerup rose almost 2% to $2.09 after the announcement, and were up more than 13% on a year ago.
Forsyth Barr broker Damian Foster said the half year result was "solid" and met expectations, describing the industrial division's 16% gain as the "stand out" result.
"Skellerup has highlighted increased sales into potable water applications, which is encouraging to see given this is a key strategic focus," he said.
He said gaining operational efficiencies at plants in New Zealand and China helped drive margin expansion, which offset the impact of lower international dairy prices.
Craigs Investment Partners broker Peter McIntyre said while revenue growth was "softer" than expected, the result was "good", especially the "strong" contribution from the industrial division.
He noted net debt had reduced from $34.8million a year ago to $32.4million.
Chairwoman Liz Coutts said Skellerup was continuing to generate good earnings growth in international markets and had expectations its full-year after-tax profit would fall in a range of $29million to $31million.Forsyth Barr has a profit forecast of $29.9million, and Craigs $30.2million.