| 产品名称 | Stainless Steel Coil Tube | 规格 | ASTM A269 TP316L |
|---|---|---|---|
| 标准： | ASTM ( ASME) ，EN， DIN， JIS And Etc | 材料 | TP304， TP304L，TP316， TP316L，dual Grade 317L ， 316Ti， TP321 |
| O.D.： | 3.2-25.4mm | W.T.： | 0.2-2.5mm |
| 表面： | 抛光，酸洗，光亮退火 | 类型 | 无缝/焊接 |
| 申请： | Heating， Cooling， Instrumentation … | ||
| 强光 | ASTM A269 TP316L Stainless Steel Coil Tube | ||
ASTM A269 TP316L Stainless Steel Scroll Coil Tube Petroleum chemical fertilizer
概述
Stainless steel coil is a kind of coil or mosquito bend， its diameter φ16-φ25mm， its thickness is δ0.8-2.0mm， because of its high temperature resistance， anti-scaling， anti-oxidation corrosion， long service life and other characteristics， and is widely used in chemical， mechanical， electronic， electric power， textile， rubber， food， medical equipment， communications， petroleum and other industrial fields.
Stainless steel bright coil can be used in medical products. This is because， stainless steel bright coil is made of stainless steel strip welded together and then reduce the wall， reduce the wall from thick to thin， this process can make the wall thickness uniform， smooth， and stretch the wall when reducing the wall to form the effect of no weld seam. In addition， the stainless steel bright coil is bright inside and outside， beautiful， the outer diameter tolerance can generally reach plus or minus 0.01mm， is the type of coil required for medical products.
Type 316 is more resistant to atmospheric and other mild environments than Type 304. It is resistant to dilute solutions (i.e. 1-5%) of sulfuric acid up to 120°F. However， in some oxidizing acids， type 316 is less resistant than type 304.
316 is prone to carbide precipitation when exposed to a temperature range of 800° -1500 °F， and is therefore prone to intergranular corrosion in the welded state. Annealing after welding will restore corrosion resistance.
Type 316L has the same composition as type 316， except that the carbon content is controlled below 0.03%. Unsurprisingly， its general corrosion resistance and other properties correspond closely to Type 316. However， it does provide immunity to intergranular erosion from short-term exposure in the welded state or in the temperature range of 800°-1500°F. When exposure in the range of carbide precipitation is unavoidable and annealing after welding is not feasible， 316L is recommended. However， long-term exposure in this range may render the material brittle and make it vulnerable to intergranular erosion.
The maximum anti-scaling temperature is about 1650°F in continuous use and 1500°F in intermittent use.
Features of Stainless Steel Coil Tube
1. Good process of tube installation， direct tube replacement， safe and reliable， ideal heat exchange product for old unit transformation and manufacture of new equipment.
2. High temperature steam resistance， impact corrosion resistance， ammonia corrosion resistance.
3. Uniform wall， wall thickness is only 50-70% of copper tube， overall thermal conductivity is better than copper tube.
4. Anti-scaling， not easy to stain， anti-oxidation corrosion.
5. Long service life， reduce maintenance time and save money.
Chemical Composition – Stainless Steel 316L
| C | Cr | 锰 | 莫 | 倪 | P | S | Si |
| 最大 | 最大 | 最大 | 最大 | 最大 | |||
| 0.035% | 16% – 20% | 2.0% | 2% – 3% | 10% – 15% | 0.040% | 0.030% | 0.75% |
Application of ASTM A269 TP316L
石油化工
pharmaceuticals
nuclear power
