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ASTM A269 TP316L Stainless Steel Coil Tube Bright Annealed Tube
Heat Exchanger Tube
Coiled tubing are long, continuous lengths of tubing that are wound
onto a spool or drum in a tightly coiled
configuration, without the need for coupling or joining
multiple shorter lengths. This can reduce installation time and
minimize potential leak points. Coiled tubes take up less
storage space compared to straight lengths of tubing. The compact
coiled design allows for efficient transportation, storage, and
handling, particularly in situations where space is limited.
Stainless Steel Coil Tubes
(1)Commodity name: Austenitic Stainless Steel Coil Tubes
(2)Process method: cold drawn/cold pilgered
(3)Material: TP304, TP304L,TP316, TP316L,dual grade 317L , 316Ti,
TP321
(4)Standard: ASTM ( ASME) ,EN, DIN, JIS and etc.
(5)Specifications:a) O.D.:1/4" -3/4" ...
b) W.T.:0.028"- 0.065"
c) Length:customized
(6)Delivery conditions: annealed & pickled
(7)Applications: widely used in petrol, chemical, pharmacy,
foodstuff, machinery, spaceflight,
war industry.
(8)boiler gas, hot water heating parts, hardware, shipping, power and other
industries.
(9)Packing: packed by weaving bags, then protected by seaworthy
wooden case.
Material | ASTM A269 Chemical Composition % Max | ||||||||||
| C | Mn | P | S | Si | Cr | Ni | Mo | N B | Nb | Ti | |
| TP304 | 0.08 | 2.00 | 0.045 | 0.030 | 1.00 | 18.0-20.0 | 8.0-11.0 | ^ | ^ | ^ . | ^ |
| TP304L | 0.035 | 2.00 | 0.045 | 0.030 | 1.00 | 18.0-20.0 | 8.0-12.0 | ^ | ^ | ^ | ^ |
| TP316 | 0.08 | 2.00 | 0.045 | 0.030 | 1.00 | 16.0-18.0 | 10.0-14.0 | 2.00-3.00 | ^ | ^ | ^ |
| TP316L | 0.035 D | 2.00 | 0.045 | 0.030 | 1.00 | 16.0-18.0 | 10.0-15.0 | 2.00-3.00 | ^ | ^ | ^ |
| TP321 | 0.08 | 2.00 | 0.045 | 0.030 | 1.00 | 17.0-19.0 | 9.0-12.0 | ^ | ^ | ^ | 5C -0.70 |
| TP347 | 0.08 | 2.00 | 0.045 | 0.030 | 1.00 | 17.0-19.0 | 9.0-12.0 | 10C -1.10 | ^ | ||
| Material | Heat treatment | Temperure F (C) Min. | Hardness | |
| Brinell | Rockwell | |||
| TP304 | Solution | 1900 (1040) | 192HBW/200HV | 90HRB |
| TP304L | Solution | 1900 (1040) | 192HBW/200HV | 90HRB |
| TP316 | Solution | 1900(1040) | 192HBW/200HV | 90HRB |
| TP316L | Solution | 1900(1040) | 192HBW/200HV | 90HRB |
| TP321 | Solution | 1900(1040) F | 192HBW/200HV | 90HRB |
| TP347 | Solution | 1900(1040) | 192HBW/200HV | 90HRB |
Here are some advantages of seamless coil tubes:
Enhanced Corrosion Resistance: Seamless coil tubes have no welded seams, which eliminates potential areas of weakness and vulnerability to corrosion. This makes them highly resistant to corrosive environments and reduces the risk of leaks or failures due to corrosion. Seamless tubes are particularly preferred in applications where corrosion resistance is critical, such as in chemical processing, offshore environments, and oil and gas industries.
Improved Strength and Integrity: Seamless coil tubes are manufactured from a solid billet, which undergoes a process of hot extrusion or piercing. This results in a homogeneous structure with uniform wall thickness, ensuring consistent strength and integrity throughout the entire tube length. Welded tubes, on the other hand, may have variations in strength and integrity due to the welding process.
Smooth Internal Surface: Seamless coil tubes have a smooth internal surface without the presence of weld lines or seams. This smoothness reduces frictional resistance to fluid flow, minimizes pressure drop, and facilitates the efficient transfer of liquids or gases. It also reduces the likelihood of contamination or the accumulation of deposits on the inner surface, making them suitable for applications that require high cleanliness and hygiene, such as pharmaceutical or food processing industries.
Greater Dimensional Accuracy: Seamless coil tubes are manufactured to precise dimensions and tolerances, ensuring greater dimensional accuracy compared to welded tubes. This dimensional consistency allows for easier installation and compatibility with fittings and connectors, leading to better overall system performance.
Higher Pressure and Temperature Capabilities: The absence of weld seams in seamless coil tubes provides them with improved strength and resistance to high-pressure and high-temperature environments. Seamless tubes can withstand greater internal and external pressures, making them suitable for applications that require high-pressure fluid or gas transportation, such as heat exchangers or hydraulic systems.
Reduced Risk of Defects: Welded coil tubes are susceptible to potential welding defects, such as porosity, inclusions, or discontinuities in the weld area. Seamless coil tubes, on the other hand, are produced by a continuous extrusion or piercing process, which minimizes the risk of such defects and ensures a more homogeneous and defect-free structure.
Applications
Stainless steel tube coils are ideal for use in potentially corrosive environments and for transferring liquids and gases for cooling, heating, and other purposes. From gas manifolds and plumbing to solar energy and medical equipment, YUHONG’s stainless steel tubing coils are effective in a wide range of applications.
