Tubular Exchanger Manufacturers Association, also known as Tema make a wide variety of shell and tube heat exchangers. See below for Tema shell and tube options. 

Front End Stationary Head Type

• Channel & Removable Cover
• Bonnet Integral Cover
• Channel Integral with Tube Sheet
• Channel Integral with Shell and Tube Sheet

Shell Type

• One Pass Shell
• Two Pass Shell with Longitudinal Baffle
• Split Flow
• Divided Flow
• Kettle Type Reboiler

Rear End Heat Types

• Fixed Tube Sheet "A" Stationary Head
• Fixed Tube Sheet "M" Stationary Head
• Fixed Tube Sheet "N" Stationary Head
• Outside Packed Floating Head
• Floating Head with Backing Device Split Ring
• Pull Through Floating Head
• U-Tube Bundle 
• Externally Sealed Floating Tube Sheet

Common Models

• BEU
• BEM
• BEW
• AEW
• AEP
• BKU
• NEN