We have many year experiences to offer stainless steel tubing coil, fabricating and bending stainless steel tubing by bending equipment and tool, ASTM A213 / A269 for seamless stainless steel tubing, ASTM A249 / A269 for welded tube, generally in bright annealing finish, annealing pickling finish can be provided for option.
304/304L, 316/316L Stainless Steel
304/304L and 316/316L iare wide used dual certified grades in stainless steel group due to their excellent corrosion resistance and properties, these stainless steels have ability to resist hight temperature, low temperature as well as high pressure, and they are cost effective material relatively.
|304/L (UNS S30400/UNS S30403) CHEMICAL COMPOSITION % (MAX .)|
|316/L (UNS S31600/UNS S31603) CHEMICAL COMPOSITION % (MAX .)|
304/304L Stainless Steel Coil Tubing
304 grade is typical 18/8 Cr/Ni stainless steel material, it possesses good corrosion resistance and properites to meet many applications, it is a cost effective and affordable grade, 304L is low carbon 304 grade。
However, 304/304L is not suitable used in saltwater environment, because corrosion may be occur in Chloride condition.
316/316L Stainless Steel Coil Tubing
316 stainless steel is the second used grade, it contains 2.0 – 3.0 molybdenum element which makes it has better corrosion resistance than 304, and for this reason, it is a good option for marine applications.
Quality Coil Tubing
We are a specialist for coil tubing, having the expertise and techniques to meet tubing bend service, all the tubing is conducted in 100% tested at the appropriate pressure, tubing inner and outer surface is clean and try for packing,
- Precision bending
- Smooth bends
- Surface roughness Ra < 0.5 μm
- Standard tolerance: ASTM A269, or D4/T4
- Strength – Tensile, Burst
- Hardness – Rockwell, Micro
- Soundness – Eddy Current, Ultrasonic
- Leak & Strength – Hydrostatic
- Leak – Air Under Water
- Bend Testing – Reverse Bending, Flattening, Reverse Flattening, Flange
- Dimensional – OD, Wall, Straightness
- Metallurgical – Grain Size, Sensitization, Corrosion, Phase Balance/Intermetallic, Metallographic
After annealing, straighten stainless steel tubing is in soft condition, tubing can be bent, formed and fabricated in various directions and angles.
Standard Stainless Steel Tubing Coil Dimensions
Stainless steel tube is designed in coiling form, general small diameter, maximum tube length can be 1000 meters, without any joint metal, there are a large range sizes of stainless steel tubing for coiling, standard outside diameter is given below, and wall thickness ranges from 0.0275 inch – 0.083 inch, maximum length reach to 1000 meters.
For small diameter or thin walll coil tubing, BWG gauge is usually defined wall thickness of tubing.
Stainless Steel Coil Tubing finishes
Mil finish and bright annealed finishes can be choosen for coil tubing, if required, precise drawn process is available to obtain tight dimentions, bright annealing tube has a smooth surface。
Advantages of Coiled Tubing
Stainless steel tubing coil have excellent high temperature resistance and corrosion resistance, compared to cooper tube, stainless tube thickness can be reduced 30% – 60%, not too thin and too thick, it is not rust and sanitary, reducing maintenance time, saving cost, easy to install and change.
Coiled tubing can be formed in various shapes depending on applications, for example, helical coil and horizontal tube.
Stainless Steel Coil Tubing Applications
Coil tubing is used for wide range of applications, applied for cooling and heating transferring energy in corrosive and non normal temperature environment, like food and beverage, oil and gas, medicine industry and so on, we manufacture and design coiled tubing to meet customer requirement in different sharps and purpose。
Industrial stainless steel tubing coil applied for heat exchangers, boilers, oil, chemicals, fertilizers, chemical fiber, pharmaceutical, nuclear power and so on.
Fluid stainless steel coil tube applied for beverages, beer, milk, water supply systems, medical equipment.
Mechanical structure with stainless steel coil tube applied for printing and dyeing, printing, textile machinery, medical equipment, kitchen equipment, automotive and marine accessories, construction and decoration.
Typical applications of stinless steel coil tuing:
- Evaporator Coil Tubing
- Solar Heater Coil Tubing
- Bear Cooling Coil Tubing
- Condenser, Boiler Coil Tubing
- Cooling Tower Coil Tubing
- Steam Coil Tubing