Feature
Stainless steel coil is resistant to high temperature steam, impact
corrosion and ammonia corrosion. Anti-scaling, not easy to stain,
anti-oxidation corrosion; Long service life, reduce maintenance
time, save costs; Good tube loading process, direct tube change, e
and reliable; The wall is uniform and the wall thickness is only
50-70% of that of copper tube, and the overall thermal conductivity
is better than that of copper tube. It is the ideal heat exchange
product for the transformation of old units and the manufacture of
new equipment. It can be widely used in petrochemical, electric
power, nuclear industry, medicine, food and other industries.
Application
Industrial stainless steel coil: heat exchanger, boiler, petroleum,
chemical industry, chemical fertilizer, chemical fiber,
pharmaceutical, nuclear power, etc
Stainless steel coils for fluids: beverages, beer, milk, water
supply systems, medical equipment, etc
Stainless steel coil for mechanical structure: printing and dyeing,
printing, textile machinery, medical equipment, kitchen equipment,
automobile and ship parts, construction and decoration.
Chemical Composition
| Grade | C | Mn | P | S | Si | Cr | Ni | Mo |
| Carbon | Manganese | Phosphorous | Sulfur | Silicon | Chromium | Nickel | |
| 304 | 0.080 max | 2.00 max | 0.045 max | 0.030 max | 1.00 max | 18.0–20.0 | 8.0–11.0 | |
| 304L | 0.030 max | 2.00 max | 0.045 max | 0.030 max | 1.00 max | 18.0–20.0 | 8.0–12.0 | |
| 316L | 0.030 max | 2.00 max | 0.045 max | 0.030 max | 1.00 max | 16.0–18.0 | 10.0–18.0 | 2.00–3.00 |
Mechanical Properties
| Yield Strength: | 30 ksi min |
| Tensile Strength: | 75 ksi min |
| Elongation (min 2"): | 35% |
| Hardness (Rockwell B Scale): | 90 HRB max |
Materials available
| American standard | Austenitic Steel |
| TP304,TP304L,TP304H,TP304N,TP310S,TP316,TP316L,TP316Ti,TP316H,TP317,TP317L,TP321,TP321H.TP347.TP347H.904L... |
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| Duplex Steel |
| S32101,S32205,S31803,S32304,S32750,S32760 |
| Others |
| TP405.TP409.TP410,TP430.TP439.. |
| Europen standard | 1.4301,1.4307,1.4948,1.4541,1.4878,1.4550,1.4401,1.4404,1.4571,1.4438,1.4841,1.4845,1.4539,1.4162,1.4462,1.4362,1.4410.1.4501 |
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Test
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
Package
The normal package is Plastic bags with each pipe,after tie in the
buddle put the pipes into wooden box if the customer need. We can
also packing according to the customer required.
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