Integral Low Fin Tubes

Product Specification
Tube OD:	12.7mm to 31.75mm	1/4" to 1 1/4" (NPS)
Tube WT:	1.65mm to 3.0mm	0.065" to 0.118"
Tube Length:	20000mm max	66ft max
Fin Thickness:	0.3mm to 0.5mm	0.0118" to 0.0197"
Fin Height:	0.9mm to 1.3mm	0.0354" to 0.0512"
Fin Pitch:	666FPM to 1111FPM	16FPI to 30FPI
Fin Type:	Integral Low

 

Material
Tube Material:	Carbon Steel: most common grades are SA179, SA192, SA210A1, SA210C, SA106Gr.B Stainless Steel: most common grades are TP304, TP316, TP321, TP347, 2205 Alloy Steel: most common grades are T5, T9, T11, T12, T22, T91, P5, P9, P11, P12, P22, P91 Copper: most common grades are UNS12200, 14200, 70600, CuNi70/30, CuNi90/10 Titanium: most common grade is SB338Gr.2

* This table is used as a general guide to our capabilities, please contact us for any other customized cases.

 

Fabrication Process
The fins are rolled out from the wall of the tubes and hence are integral with the tube. As the fins are formed from the base tube by rolling out material from its wall, the wall thickness under the finned section is reduced compared to the wall thickness at plain ends. These fin tubes can be manufactured from most tubular materials and the hardness of the material usually determines the finning code or fin profile. The harder materials such as Nickel Alloys, Stainless Steel, Titanium are supplied with higher density (i.e. 26, 28, 30 FPI). This shallow profile reduces the work hardening of the material and helps to eliminate the possibility of root fin cracking.
Whereas, softer materials like Carbon Steel, Copper, and Copper Alloys are supplied with deeper profile giving a lower fin density (i.e. 16 or 19 FPl). These tubes can also be supplied with intermediate plain landing as well as U bent, where U bend portion can be finned or un-finned.

Production Capacity
Total four finning lines, monthly production capacity is 85000 meters in total.

Codes and Standards
As per drawings and client's Requirements