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PEP

  • Internal Tube Profile

Innovative Design

Assured Quality

Paralloy’s ability to manufacture internally finned tubes for pyrolysis coils has made a significant impact in the ethylene industry. Increasing coil efficiency and plant capacity has been in demand by the petrochemical industry for a number of years. The ability to increase plant throughput without compromising reliability is paramount in an ever demanding and challenging market. Paralloy Group’s solution brings huge benefits to operators of ethylene plants. 


Paralloy Group’s manufacturing excellence allows the manufacture of bespoke internal profiles that suits most ethylene technology’s available today. The ability to design and manufacture a profile to exacting standards allows the OEM to design, increase and stretch the plants assets without major mechanical changes. 

Internal Tube Profile

What is a PEP Tube?

PEP tube can be manufactured in a variety of high temperature alloys to meet the needs of the customers process requirements. The internal fins or profiles are created using a electrochemical machining process, which allows flexibility of design.

The profile technology was pioneered and patented by Paralloy Group more the 20 years ago. The most recent design is in production and undergoing a patent application.
 

Precision engineering. Reliable delivery.

Innovative Solutions That Deliver Results

Trusted solutions designed to improve performance, efficiency, and long-term reliability.

  • Tube Outer Wall Temp Decrease

    The outer wall temperature using current PEP profile design allow the tube wall temperature to be decreased  by 26°C.

  • Gas Temperature Increase

    The average gas temperature increase using the latest PEP profile is 20°C on average when compared to a plain tube without fins.

  • Increase in Heat Transfer

    The increase in heat transfer using the new design is on average 40% from a plain tube without fins when external wall temperature remains the same.

Tailored Manufacturing

Paralloy Group deploys state or the art manufacturing techniques for all of its products. The company is continually reviewing and improving its processes and equipment to meet new developments and further to solve client’s problems. Our ability to respond to customer needs when products require short lead times is second to none. The ability to create and manufacture design of internal profiling to meet customers exacting standards is important. 
 

Welding

To support PEP tube production, tube can be welded by metal arc (SMAW) or inert gas shielded arc (GTAW,GMAW) processes that allows full penetration welds to be performed. The same stringent quality control methods are maintained on the more complex welding.

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