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Tubes for heating elements,electric heaters-industrial use

Professional supply of industrial-grade stainless steel tubes, quartz tubes, titanium tubes, copper tubes and other pipe materials for heating elements, electric heaters.

How to choose stainless steel tubes, copper tubes, aluminium tubes, and copper coated iron tubes for heating elements or 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 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 etc
SUS 321 760°C 700°C 5 High-temperature black coating, high-temperature welding and bright furnace of high-temperature annealing processed with ammonia decomposition 77±5 Blackened tubes with low load like microwave ovens, barbecues etc
SUS 304 760°C 650°C 6 High-temperature black coating, high-temperature welding and bright furnace of high-temperature annealing processed with ammonia decomposition 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.

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