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ABOUT
DTTW
DTTW is broadening its focus to include the renewable resource industry based on past experience in many NZ projects including Rosedale and Greenmount landfill gas power facilities and the Mangere bio-solids pilot project.
Our services include:
- Pipe fitting and mobile welding
- Custom pipe fabrication
- Pipe spooling
- Pipe fitting and Welding quality control

Tim Allen, Founder has been a professional, certified Pipe Welder since 1998.
Professional qualifications included:
- In Canada, Red Seal A level certification
- New Zealand boiler maker welder
- Australia boiler maker welder
Tickets include:
- 304, 316, Zeron and Duplex Stainless
- P5 and P9 Chrome moly
- Carbon steel TIG also BCP 100 and B pressure (Alberta)

![]() 2 inch sockolet weld | ![]() IMG_5433_edited.JPG | ![]() IMG_5244_edited.JPG |
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![]() IMG_5430_edited.JPG | ![]() FullSizeRender (3).jpg | ![]() IMG_7499.JPG |
![]() FullSizeRender (1).jpg | ![]() IMG_5427.JPG |
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