Tube expanding

Complete solutions for precise tube expansion—from expanders for condensers, heat exchangers and boilers to powerful rolling motors and digitally controlled systems.

Condenser Expanders

Condenser and Exchangers Tube Expanders

Tool for expanding tubes in condensers, chillers, heat exchangers, finfan coolers, feedwater heaters and surface condensers.

Condenser Expanders

Tube expander for small coolers

KRAIS 1300 series expanders are designed for small tubing where additional reach and a longer roll zone are required. This makes them a strong choice for thick tube sheets or deeper seating geometries. These tools are frequently used for small coolers, especially in service and retubing work where access and geometry drive the need for reach.

Condenser Expanders

Condenser and Exchangers Tube Expanders

Tool for expanding tubes in condensers, chillers, heat exchangers, finfan coolers, feedwater heaters and surface condensers.

Condenser Expanders

Five Roll Condenser Tube Expanders

Tool for expanding tubes in condensers, chillers, heat exchangers, finfan coolers, feedwater heaters and surface condensers.

Condenser Expanders

Condenser and Exchangers Tube Expanders

STANDARD VERSION

Tool for expanding tubes in condensers, chillers, heat exchangers, finfan coolers, feedwater heaters and surface condensers.

Condenser Expanders

Condenser and Exchangers Tube Expanders

Version A | UP TO 8-3/4" (222,2 MM)

Tool for expanding tubes in condensers, chillers, heat exchangers, finfan coolers, feedwater heaters and surface condensers.

Condenser Expanders

Condenser and Exchangers Tube Expanders

VERSION B | UP TO 10-3/4" (273,0 MM)

Tool for expanding tubes in condensers, chillers, heat exchangers, finfan coolers, feedwater heaters and surface condensers.

Condenser Expanders

Condenser and Exchangers Tube Expanders

Version C | UP TO 12-3/4" (323,8 MM)

Tool for expanding tubes in condensers, chillers, heat exchangers, finfan coolers, feedwater heaters and surface condensers.

Condenser Expanders

Five Roll Condenser Tube Expanders

STANDARD VERSION

Tool for expanding tubes in condensers, chillers, heat exchangers, finfan coolers, feedwater heaters and surface condensers.

Condenser Expanders

Five Roll Condenser Tube Expanders

Version A | UP TO 8-3/4" (222,2 MM)

Tool for expanding tubes in condensers, chillers, heat exchangers, finfan coolers, feedwater heaters and surface condensers.

Condenser Expanders

Five Roll Condenser Tube Expanders

Version B | UP TO 10-3/4" (273,0 MM)

Tool for expanding tubes in condensers, chillers, heat exchangers, finfan coolers, feedwater heaters and surface condensers.

Condenser Expanders

Five Roll Condenser Tube Expanders

Version C | UP TO 12-3/4" (323,8 MM)

Tool for expanding tubes in condensers, chillers, heat exchangers, finfan coolers, feedwater heaters and surface condensers.

Condenser Expanders

Condenser and exchangers tube expanders

Tool for expanding tubes in condensers, chillers, heat exchangers, finfan coolers, feedwater heaters and surface condensers.

Condenser Expanders

Flare Type Tube Expanders

Tool for simultaneously expanding and flaring tubes in condensers, heat exchangers, etc. Recommended for thin wall tubes.

Condenser Expanders

Short length, Conical Tube Expanders

Special, conical expanders to expand the tube on the short length before welding, optional spares and accessories available.

Boiler Expanders

Basic Boiler Tube Expanders

Three expansion rolls with three flare rolls, self feeding boiler expanders. Expanders simultaneously expand and flare the tube.

Boiler Expanders

Firetube Boiler Flaring Tube Expanders

Self-feeding tube expander with three expansion rolls and three flare rolls, simultaneously expands and flares the entire tube.

Boiler Expanders

Adjustable Boiler Tube Expanders

Three rolls, self feeding adjustable reach tube expander for deep reach expansion. Parallel rolling with long double radius rolls.

Boiler Expanders

Boiler Tube Expanders with Collar

Three expansion rolls, excellent for constructions of water tube boilers, fire tube boilers, economizers and air heaters.

Boiler Expanders

Universal Combination Beading Rolling Tools

Self feeding, straight roll tool, capable of simultaneously expanding and forming a uniform bead tight upon the tube sheet.

Boiler Expanders

Nonparallel Colins Tube Expanders

Nonparallel self feeding boiler tube expanders. Suitable for repair work that have thin tube sheet or touch up a leaky joints.

Pneumatic rolling motors

Automatic pneumatic rolling motor

Automatic version of most popular K50 rolling motor. Automatic start, stop and reverse

Pneumatic rolling motors

Automatic pneumatic rolling motor

Automatic version of strong K60 rolling motor. Automatic start, stop and reverse

Pneumatic rolling motors

Articulated supporting arm

A solid, articulated arm absorbing the torque of the rolling motors and beveling machines using a pneumatic counterbalance.

Pneumatic rolling motors

Small Pneumatic Rolling Motor

Small tool with automatic reverse, expanding tubes to a preset torque, at which point it trips over to its reverse rotation.

Pneumatic rolling motors

Push&Pull K50 Pneumatic Rolling Motor

Most popular rolling motor! Engineered to ensure uniform expansions, preventing the under- and over-rolling of tubes.

Pneumatic rolling motors

Pneumatic Rolling Motor

Rolling motors controling expansion by the measurement of torque, stopping expanding according to a predetermined setting.

Pneumatic rolling motors

Right Angle Rolling Motor

Torque controlled rolling motors with unique head design featuring a fully enclosed bearing, design for trouble-free life.

Pneumatic rolling motors

Right Angle Rolling Motor

Torque controlled pneumatic rolling motor, the perfectly suitable tool for expanding tube up to 8” and refinery fittings.

Electric rolling motors

Robot System for Rolling and Beveling

Robotic system for automated tube expansion and facing at the tubesheet, with KRAIS HMI and CAM software.

Electric rolling motors

Digital Tube Expanding System

Digital, semi automatic torque controller for the highly precise expansion of ferrous, non-ferrous and alloy tubing.

Electric rolling motors

Digital Tube Expanding System

Digital rolling controler, ensures uniform tube expansion over a wide range of tube sizes and materials.

Electric rolling motors

Digital Tube Expanding System

For demanding customers! Digital rolling controler, ensures uniform tube expansion over a wide range of tube sizes and materials.

Electric rolling motors

Hybrid Tube Expanding System

Highly precise digital controller for pneumatically driven tube rolling machines, measuring torque directly from the driven spindle.

Tube Installation

Serrating Tube Sheet Tool

Selfcentering tool for grooving tube sheet. Singlepiece mandrel with built-in rollers in allows obtaining a perfect surface.

Tube Installation

Precise Vacuum Leak Tester

Vacuum leak tester. Tool working as a simple, precise method of testing tubes in boilers, condensers, and heat exchangers.

Tube Installation

Specialized machine for precise plug removal

Compact tool for drilling, reaming, boring, and removing taper plugs, welded or non-welded from heat exchangers.

Tube Installation

Universal Multi-Application Machine

A machining platform specifically designed to perform machining operations on boilers and similar thermal exchange equipment.

Tube Installation

Machine for Serrating Tube Sheet

Powerful yet handheld machine for serrating tube sheet in heat exchangers, boiler drums, finfan coolers and other tubular vessels.

Tube Installation

Tube end facing and trimming tool

Typical use of TEF is tube trimming of condenser and chiller tubes to a uniform accurate tube projection after tube rolling.

Tube Installation

Tube Hole Gauge Measuring Tool

Basic tool for measuring tubes ID and tube sheet holes ID. Utilizes a precision three-point contact, self-centring system.