Photographs in this folder. All from Pexels (pexels.com), used under the Pexels licence. Graded and resized.

hero-pipe-hands-*.jpg / .avif | Anil Karakaya | https://www.pexels.com/photo/6419128/
basement-water-heater-*.jpg / .avif | Curtis Adams | https://www.pexels.com/photo/4092030/
copper-bending-*.jpg / .avif | Yudi Ding | https://www.pexels.com/photo/39885416/
copper-fittings-*.jpg / .avif | Nic (scrollstoppingphotos) | https://www.pexels.com/photo/28169591/
heating-manifold-*.jpg / .avif | Pavel Danilyuk | https://www.pexels.com/photo/7937299/
circulator-gauge-*.jpg / .avif | Pavel Danilyuk | https://www.pexels.com/photo/7937300/
radiator-fitting-*.jpg / .avif | sejio402 | https://www.pexels.com/photo/29226620/
cast-iron-radiator-*.jpg / .avif | Patrycja Grobelny | https://www.pexels.com/photo/12034871/
radiator-tile-wall-*.jpg / .avif | Faruk Tokluoglu | https://www.pexels.com/photo/12036091/
pipe-wrench-*.jpg / .avif | Kindel Media | https://www.pexels.com/photo/8488058/
torch-flame-*.jpg / .avif | Tima Miroshnichenko | https://www.pexels.com/photo/6263149/
torch-regulators-*.jpg / .avif | Mike van Schoonderwalt | https://www.pexels.com/photo/5506046/
mechanical-room-*.jpg / .avif | Alpha Innotec | https://www.pexels.com/photo/20046689/
trench-pipe-*.jpg / .avif | D Goug | https://www.pexels.com/photo/37627673/
trench-digging-*.jpg / .avif | Plato Terentev | https://www.pexels.com/photo/38240258/
sink-drain-*.jpg / .avif | icon0 | https://www.pexels.com/photo/220612/
gas-meter-brick-*.jpg / .avif | Jeremiah Buchanan | https://www.pexels.com/photo/8581897/
old-sink-brick-*.jpg / .avif | Ron Lach | https://www.pexels.com/photo/10475449/
condenser-unit-*.jpg / .avif | Jay Brand | https://www.pexels.com/photo/29452977/
brick-block-snow-*.jpg / .avif | Tom Fisk | https://www.pexels.com/photo/37469663/
street-snow-night-*.jpg / .avif | Tom Fisk | https://www.pexels.com/photo/22086598/
frozen-downspout-*.jpg / .avif | Eva Bronzini | https://www.pexels.com/photo/6374566/