• Magazijnweg 4, 2404 CE, Alphen aan den Rijn, The Netherlands | Office hours 08.00 till 17.00 (GMT +1) | Service 24/7

About us

As a member of HWI Group, HWI Machining is a leading manufacturer of machined pressure vessels, complex parts and other high-quality products.
HWI Machining does not limit its custom fabrication capabilities to only machined pressure vessels, but can also assemble custom pressure vessels, pile breakers, flanges or any other machined products.

About HWI Machining

HWI Machining equipment ranges from manually programmed machines to fully CAD-CAM driven CNC 5-axis milling combinations. HWI Machining can tailor its machining processes to be most efficient and cost effective on each customer application. We find it important to constantly invest in our machines, for example in 2017 we will start working with 4 new machines. We believe that staying up to date with the newest techniques makes sure that we can produce efficient and cost effective for our clients.

About HWI Group

Based in the Netherlands, HWI Group delivers a full range of engineering, design, project management, quality control, and fabrication services. Since January 1991 HWI Group has been supplying machined parts and filters.

In 1991 HWI Group started HWI Techniek (now named HWI Machining) as a high end machining company to serve the most demanding industries. In 2012 HWI Group founded Pressure Equipment Holland (now named TM Filters) to serve the Up-stream Oil & Gas market with custom filtration solutions.


January 1, 2017

2010 The HWI Group moved to another industrial area in Alphen aan den Rijn

October 3, 2016

Presently more than 50 employees with agencies worldwide

January 10, 2016

HWI Techniek changed the name to HWI Machining

January 3, 2016

October 2016 Pressure Equipment Holland became TM Filters

November 3, 2010

October 2016 Pressure Equipment Holland became TM Filters

November 2, 2010

In 2010 The headcount increased to 24 employees.

January 1, 1997

HWI Group expanded the production area

January 1, 1994

​In 1994 The whole company moved to the industrial area in Alphen aan den Rijn​.

January 3, 1991

Location at Koudekerk started with 4 employees

January 2, 1991

HWI – Named after one of the company founders Founded by Han de Wind and Ton Wolvers

January 1, 1991

January 1990 HWI Group was established including business unit HWI Techniek