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Commercial & Civil Pipelaying

We provide a full range of commercial, civil construction services & contarct maintenance solutions.
Residential Projects

Hydraulic Service & Drainage Contractors that Care About Project Delivery, Budget and Safety

Our commercial & civil contracting division provides a full range of hydraulic & drainage construction services, from large-scale new buildings, three water infrastructure, upgrades of existing buildings and plant rooms.

We have the in-house experience to manage all the design & estimation aspects of your plumbing, gasfitting, drainage & civil pipelaying requirements, making Semtex your one-stop company.

Commercial & Civil Pipelaying Services

  • Small to large scale projects
  • Pipefitting water, waste & gas
  • Civil drainage, three waters & pump stations
  • Large scale gas & water mains
  • HDPE & PPR specialists
  • Design build solutions
  • CAD drafting and hydraulic design
  • Contract facility maintenance
  • Estimation, SOQ & operation manuals
  • Backflow prevention & IQP testing

Commercial & Civil Tenders: This email address is being protected from spambots. You need JavaScript enabled to view it.











We are leaders in commercial plumbing, gasfitting, drainlaying services for businesses across the Manawatu.

Our maintenance division provides full-service preventative & reactive maintenance plans including emergency jobs through to backflow testing and gas fitting, drain unblocking. No job is too big or too small!

We provide highly trained and experienced technicians, ensuring that your assets are protected and that your business can continue operating.

Our mobile team of trouble-shooters are on-call 24 hours a day, seven days a week for established clients. Through solid business partnerships, we have developed an understanding of client needs.

This means that not only can we solve their immediate problem, but we can work with them proactively to reduce future maintenance issues. This ensures our clients continue with their operations as usual.





We pride ourselves on providing contract maintenance solutions to a number of reputable local & national companies

These services are tailored to each business and their requirements be in domestic, commercial or industrial.

For our contracted clients we have KPI’s, quality management and safety systems for all jobs.

We utilise the most state of the art job & asset management systems and can integrate with you building or facility BMS for breakdown & monitoring services.

To discuss our maintenance contracts us here This email address is being protected from spambots. You need JavaScript enabled to view it.

Maintenance Clients We Work For