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

Our commercial contracting division provides a full range of hydraulic construction services, from large-scale new buildings to 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 requirements, making Semtex your one-stop-shop for all commercial plumbing, gas and drainage services.

Commercial Services
Small to large scale projects
Pipefitting water, waste & gas
Civil drainage
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 Tenders: estimator@semtex.co.nz


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 commercial & residential solutions to a number of reputable local & national companies

These services are tailored to each business and their requirements.

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 office@semtex.co.nz

Clients we work for