Heat exchange tubes are intended for heating or cooling process fluids, they are for example suitable for closed circuit cooling of electrical equipment using demineralised water and for cooling water soluble oil solutions in quenching tanks.

Heat exchanger Tubes are used in all types of process industries. Characteristic requirements are: bead worked weld, fixed lengths and extensive testing. In order to meet the demand for rapid delivery, we have a strip stock with both standard and special grades of steel in the most common thicknesses.

•  ASTM A213/A213M Seamless tube
•  ASTM A556M-88/ASME SA556 heater tubes 1
•  ASTM A249/A249M Welded tube

Size range 6.35mm - 76.2mm OD x 0.91mm – 3.25mm wall thickness

Heat exchanger tubes are supplied in Standard Wire Gauge (SWG) or Birmingham Wire Gauge (BWG)

Popular grades: 1.4306 (304L), 1.4404 (316L)

Whether your application requires seamless or welded stainless steel tubing, you can always count on consistent, high quality tubing manufactured by our specialists at Sunny Steel. Many of the world’s leading heat exchanger manufacturer’s turn to us for their tubing needs. Applications include:

U bending

•  What kinds of finned tubes are used in air cooled heat exchanger?
•  High-pressure boiler tube heat defect
•  Heat boiler seamless extrusion technology

We offer quick turnaround as well as specialty and nickel alloys.

Delivery Conditions:

1. Annealed, Normalized, Normalized and Tempered

2. Main Testing Terms Accoring to ASTM A213-09 and ASTM A1016

3. High pressure hydraulic Test: Minimum 10 Maps.

4. Eddy current test, Ultrasonic Test

Mechanical Test

•  OD and WT tolerance Test.

Surface treatment:

•  Oil-dip, Varnish, Passivation, Phosphating, Shot Blasting.