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Type B Girder Clamp

Standard girder clamp, with flat top, used to quickly connect steel beams with parallel / flat flanges and resist moderate tensile loading.

View technical specification Girder Clamp Configurator


The Type B girder clamp is used to achieve a fast steelwork fixing connection between two steel beams and is often used in a pair with Type A clamps. It has a flat top to allow the bolt head or nut to rotate on a hardened washer and can also be used with studs, tie rods or J-bolts. The skirt on the underside of the clamp abuts the edge of the beam flange and prevents the clamp rotating during installation. Type B girder clamps can also be used on their own if one piece of the steelwork has been pre-drilled.

Features & Benefits

  • Flat top allows the bolt head or nut to rotate on a hardened washer.
  • Ideal for parallel flanges.
  • Suitable up to 78.8kN tensile in a four-bolt configuration.
  • Independently approved for dynamic load applications to EN 1993-1-9. Contact us for more details.


Click on an approval logo to download the certificate or report.

Tail Lengths & Packing Pieces

The clamp is available in three tail lengths, Short, Medium and Long and can be used with Lindapter packing pieces to increase the clamping range. Choose the correct combination of tail length and packing pieces to suit a specific flange thickness. Download datasheet for selection table.

Location & End Plates

These plates ensure the clamps and bolts are located in the correct position relative to the supporting steelwork. Location plates are simple fabricated items designed to sit between the two sections to be clamped together to ensure the bolts are fixed at the correct centres. End plates are simple fabricated items that are pre-welded to support frames, bracket or sections, allowing connection to the supporting structure with standard Lindapter clamps. Download datasheet for further information.


  • Manufactured from malleable iron to BS EN 1562.
  • Available with zinc plated or hot dip galvanised finish.
  • Reaction to fire: A1 (Steel)

Durability and corrosion protection:

Corrosivity Class Galvanised Steel Electroplated Steel
C1 More than 50 years More than 20 years
C2 More than 50 years More than 5 years
C3 More than 20 years Not suitable

For C4 and C5 corrosion categories contact us.

Technical Specification

Click to view labelled diagram

Safe Working Loads (FOS 5:1) Dimensions
Product Code Bolt 8.8 Z Tensile / 1 Bolt Slip / 2 Bolts Tightening Torque* Y X Tail Length V T Width
short medium long
kN kN Nm mm mm mm mm mm mm mm
BO8 M8 1.0 - 6 16 8 - 4 - 8 20
B10 M10 1.5 - 20 20 11 4 5 7 10 26
B12 M12 5.8 0.9 69 26 13 4.5 6 9.5 12 29
B16 M16 8.5 1.7 147 30 16 5.5 8 11 16 36
B20 M20 14.7 3.0 285 36 19 7 10 12.5 19 46
B24 M24 19.7 4.5 491 48 25 9 12 16 25 55

* Torque figures based on bolts / setscrews in an unlubricated condition.

Suitable for UPN / IPN type tapered flanges. For further information contact Lindapter Technical Support.

  For Characteristic Resistances when designing a connection to Eurocode 3, please refer to DoC No.103

  For Characteristic Resistances when designing a connection to Eurocode 3, please refer to DoP No.003

Faster to Install

No drilling or welding!

Independently Approved

Reasons to choose Lindapter

  • Save time and money

    Save time and money

    Clamping two steel sections together avoids time-consuming welding or conventional drilling and bolting.

  • Safer connections

    Safer connections

    On-site drilling and welding is avoided, removing the need for hot work permits and encouraging safer site conditions.

  • High strength

    High strength

    Lindapter clamps are manufactured from high strength materials to resist high load requirements and harsh environments.

  • Industry leading approvals

    Industry leading approvals

    Lindapter has earned a reputation synonymous with safety and reliability, gaining multiple independent approvals.

  • Adjustable


    Quickly align steel sections by sliding the section into the correct position before tightening the Girder Clamp to complete the installation.

  • Free connection design

    Free connection design

    Lindapter’s experienced Engineers can design a bespoke connection based on your specific requirements free of charge.

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