In our own factory we make a wide range of ball joints to connect floating pipelines and other constructions. With an experience of more than 50 years and continuous product development we meet the requirements of our customers worldwide. Since the introduction of our ball joint we have gained a worldwide reputation for strength and reliability.

Ball joints for dredging

Our standard ball joints have a maximum swivel angle of 20°, free rotating and full nominal passage in the maximum angle position. The rubber seals are seawater and oil resistant.The ball joints are made of cold deformed steel plates. Because of the cold deformation of the steel, the surface hardness of the material increases. This results in a reliable and solid product, which can be used in many circumstances.

The ball-joint exists of three main parts:

  • female part
  • male part
  • retaining ring, which locks the male in the female part.

Technical specifications

  • For inside pipe diameters: ø 300 – ø 1.000 mm.
  • Maximum swivel angle male part: 20° (standard)
  • Turning angle: > 360°
  • Maximum operating pressure: 10 Bar (standard)
Ball joint dredging equipment

Ball joints options

Since 1965 we have produced thousands of steel plate ball joints and delivered them all over world. In addition to our wide range of standard designs we can offer the following options:

  • alternative swivel angles;
  • higher operating pressures;
  • customized flanges on female and male part;
  • customized connections on female and male part for direct welding on pipes;
  • liners in male and/or female part;
  • wear resitant liners.


Steel plate ball joint dredging equipment

Ball joint applications

Our steel plate ball joints can be used in several situations and are suitable for the following applications:

  • connection between floating pipe lines;
  • connection between pontoons;
  • ship to shore connection;
  • side discharge connections;
  • connection between pipe lines on mountainous or hilly terrains.
Ball joint dredging equipment


Recent Straatman Dredging equipment projects:

What to expect from our Straatman team

Over 50 years of experience with ball joints

In-house production in The Netherlands

We offer quick delivery on all our standard ball joints

Leading provider of couplings, glands and joints

Learn more about our ball joints for dredging

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