ZHANGJIAGANG HUA DONG ENERGY TECHNOLOGY CO.,LTD
Zhangjiagang Hua Dong Energy Technology Co., Ltd.
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Boiler Steel Tube Boiler tubes - for pressure equipment, used at higher temper
Description
Boiler Tubes are metal tubes located inside of boilers that heat water in order to produce steam. There are two major types of tube boilers: water-tube boilers and fire-tube boilers. In water-tube boilers, water circulates inside the tubes and is heated externally by hot gases generated by the furnace.
Specification:
| Grade | 321 | 321H | 1.4541 |
| UNS Designation | S32100 | S32109 | |
| Carbon (C) Max. | 0.08 | 0.04–0.10 | 0.08 |
| Manganese (Mn) Max. | 2.00 | 2.00 | 2.00 |
| Phosphorous (P) Max. | 0.045 | 0.045 | 0.040 |
| Sulphur (S) Max. | 0.03 | 0.03 | 0.015 |
| Silicon (Si) Max. | 1.00 | 1.00 | 1.00 |
| Chromium (Cr) | 17.0–20.0 | 17.0–20.0 | 17.0-19.0 |
| Nickel (Ni) | 9.0–12.0 | 9.0–12.0 | 9.0–12.0 |
| Molybdenum (Mo) | — | — | |
| Nitrogen (N) | – | – | |
| Iron (Fe) | Bal. | Bal. | Bal. |
| Other Elements | Ti=5(C+N) to 0.70% | Ti=4(C+N) to 0.70% | Ti=5(C+N) to 0.70% |
A high pressure watertube boiler[1] (also spelled water-tube and water tube) is a type of boiler in which water circulates in tubes heated externally by the fire. Fuel is burned inside the furnace, creating hot gas which boils water in the steam-generating tubes. In smaller boilers, additional generating tubes are separate in the furnace, while larger utility boilers rely on the water-filled tubes that make up the walls of the furnace to generate steam.
Application Industries