TM Filters

About us


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 to serve the Up-stream Oil & Gas market with custom filtration solutions.


TM Filters (previous Pressure Equipment Holland) has in-house Design, Manufacturing, Inspection and Testing capabilities. TM Filters is your partner in protecting important Turbomachinery equipment such as Turbines, Compressors and Pumps. Our excellent know how and experience in dealing with complex projects, ensures reliable partnership, on time delivery and optimal performance on all your enquiries and orders.

Our extensive quality control system (ISO 9001:2015) ensures that all our products and services are properly engineered, constructed and inspected according to customer requirements.

TM Filters are delivered according to API standards and are designed to the most strict international codes such as ASME, PED, NORSOK, DNV Off-shore etc. We comply with End-user specifications such as defined by Saudi Aramco, PDO, Shell, BP, Total, Statoil and many others.

We have over thirty years of experience in designing and manufacturing High End Filter Solutions. Suppling filtration products to Turbomachinery Equipment OEM's, Skid builders, EPC's and End-users.

1 jan. 2021
More growth

Presently more than 50 employees with agencies worldwide

1 okt. 2016
Name change

October 2016 PE Holland changed the name to TM Filters

1 okt. 2016
Name change

October 2016 HWI Techniek changed the name to HWI Machining

3 jan. 2012
New company

2012 HWI Group established a new company with the name Pressure Equipment Holland

2 jan. 2010

In 2010 The headcount increased to 24 employees

1 jan. 2010

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

1 jan. 1998

1998 HWI Group introducing fully CAD-CAM driven CNC 5-axis milling combinations

1 jan. 1997

1997 HWI Group expanded the production area

1 jan. 1994

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

3 jan. 1991
First location

Location at Koudekerk started with 4 employees

2 jan. 1991

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

1 jan. 1991

January 1990 HWI Group was established including business unit HWI Techniek

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