The Hercules Red Master Clamp is a revolutionary internal hydraulic line up clamp for the smaller pipe ranges for on and offshore applications. The clamp combines pneumatic with hydraulic force which generates excellent capacities for heavy wall thickness pipes. Its solid housing and superb material treatment the clamp can withstand major forces. The clamping force is adjustable up to 44 tons whoch allows a precise alignment of the welding joint. It eliminates any miss match for heavy wall small bore pipes and is especially suitable for s- and j-lay systems. The support rollers have easy acces and less adjustment time by using a centre screw. The red Master Clamp can be expanded with several options such as a drop fail protection module, copper shoes module, motorization module and/ or backing oxygen module.


● Clamping force adjustable up to 22 tons for each expander

● RMC 100 (I.D. 110 – 150mm)

● RMC 350 (I.D. 350 – 480mm)

● RMC 130 (I.D. 140 – 200mm)

● RMC 180 (I.D. 190 – 270mm)

● RMC 250 (I.D. 260 – 360mm)

● RMC 350 (I.D. 350 – 480mm)

● 8 Bar operating air pressure

● Remote controlled by hoses

● Fail safety braking system

● Expandable with various modules



ManufacturerHercules Piping Tools Engineering BV The Netherlands
 Model                             I.D.                  Length
Model TypeRedMasterClamp 100   110 – 150mm   3000mm
(Internal Diameter +Dimension in mm)RedMasterClamp 130   140 – 200mm   2800mm
 RedMasterClamp 180   190 – 270mm   2000mm
 RedMasterClamp 250   260 – 360mm   1800mm
 RedMasterClamp 350   350 – 480mm   1600mm
Operating Pressure8 bar (air)
Expanders3 up to 8
Max. Force each expander22 ton
Working EnvironmentTemp -40˚C – 50˚C
OperatedRemote controlled by cable and hoses
OptionalBacking gas module, Copper shoe module, Driving unit
Quality / SafetyCE
Warranty12 Months
DocumentationSupply user and maintenance manuals; Spare part book. All documents in English.