Professional supply of industrial-grade stainless steel tubes, quartz tubes, titanium tubes, copper tubes and other pipe materials for heating elements, electric heaters.
|Classification||Material||UL application temperature||Actual guaranteed temperature in design||Price level||Common processing methods||Surface hardness (Rockwell)||Applications|
|High temperature tube||Incoloy600||982°C||900°C||1||High-temperature black coating, high-temperature welding and bright furnace of high-temperature annealing processed with ammonia decomposition||77±5||Hardly used|
|Incoloy800（NCF800）||927°C||850°C||2||High-temperature black coating, high-temperature welding and bright furnace of high-temperature annealing processed with ammonia decomposition||77±5||high temperature water heater welded pipes and use under the condition of poor water quality|
|INcoloy840（NAS H840）||927°C||850°C||3||High-temperature black coating, high-temperature welding and bright furnace of high-temperature annealing processed with ammonia decomposition||77±5||Blackened tubes like microwave ovens, barbecues, air conditioners, drying and other blackened tubes; high-temperature welded tubes of water heaters. It has good property of oxidation resistance and corrosion resistance under high temperature working conditions.|
|SUS 309S||800°C||77±5||Blackened tubes like microwave ovens, barbecues etc|
|SUS 321||760°C||700°C||5||77±5||Blackened tubes with low load like microwave ovens, barbecues etc|
|SUS 304||760°C||650°C||6||77±5||Low load grill heaters|
|partial annealing or empty tube annealing||77±5||used for heating elemtens applied in water heater.|
|SUS 316L||760°C||700°C||4||partial annealing or empty tube annealing||77±5||used for heating elemtens applied in water heater.|
|Medium or Low temperature tube||Cu (nickel-coated)|T2||177°C||250°C||7||partial annealing or empty tube annealing（bright furnace with ammonia decomposition）||40±10||used for heating elemtens applied in water heater.|
|AL||260°C||350°C||8||410°C annealing furnace of mesh belt||30±5||Hybrid welding or mosaic|
|Fe(copper coated)Commonly used grade is 10# steel||399°C||450°C||9||77±5||Hybrid welding，mosaic or casting|
|Remark：1. Incoloy is a alloy steel with high percentage of nickel. |
2.SUS316L, L stands for low carbon, anti-rust, can be used for water boiling；
3.1---6 represents the price from high to low.
4.Nickel-plated pipes are generally used in water, and AL pipes and Fe pipes are generally connected to the heated elements
5.The nickel-plated layer will discolor or fall off if the temperature exceeds 250°C.