Description

The SAPSONS ‘AF 1’ Series Boiler Tube Expanders are precision-engineered flare-type tube expanders designed for expanding and flaring boiler tubes in a single operation to produce strong, leak-proof tube-to-tube sheet joints. Each expander is equipped with three plain rollers and one flare roller, ensuring uniform tube expansion and accurate flaring while minimizing tube damage. These tools are suitable for boiler manufacturing, installation, maintenance, and repair across power plants, refineries, and process industries.

The AF 1 Series is available for tubes ranging from 7/8 inch OD to 4½ inch OD, with models covering tube expansion lengths from 1/2 inch to 2⅝ inches. To meet different application requirements, the expanders are offered with Drum, Header, and Short Series mandrels, providing flexibility for various boiler tube configurations. Manufactured from high-quality alloy steel and heat-treated for durability, the AF 1 Series delivers reliable performance, long service life, and consistent expansion quality, making it a dependable choice for demanding industrial applications.

Technical Specifications :

• Type: Flare-type boiler tube expander
• Roller Configuration: 3 plain rollers + 1 flare roller
• Tube Size Range: 7/8″ OD to 4.1/2″OD
• Expansion Lengths: 1/2″ to 2.5/8″
• Mandrel Options: Drum, Header, and Short Series
• Primary operation : Tube expansion and end flaring
• Applications: Boiler tube installation, tube replacement, maintenance, and repair
• Key Benefit: Performs expansion and flaring in one operation for secure, leak-resistant tube joints with consistent results.

Specifications are based on product description. Exact model selection depends on tube diameter, wall thickness and tube-sheet thickness.

Key Features and Benefits :

• Combined expansion and flaring: Expands the tube against the tube sheet while forming a flared tube end.
• Four-roller configuration: Three plain rollers perform expansion, while the flare roller forms the tube-end flare.
• Wide size range: Models cover tube outside diameters from 7/8″ to 4½″.
• Application-specific mandrels: Drum, Header and Short Series mandrels are available for different working conditions.
• Reliable tube joints: Proper operation helps produce secure, leak-resistant tube-to-tube-sheet connections.
• Maintenance suitability: Useful for boiler installation, tube replacement and repair work.