Stud Tubes for Convection Chambers by Qingdao Hexin Machinery Co., Ltd.

 Stud Tubes for Convection Chambers by Qingdao Hexin Machinery Co., Ltd.

The nail head tube (also known as the needle tube) adopts a square or hexagonal arrangement and is equally divided into cylindrical needles welded on the surface of the heat exchange tube. The square or hexagonal reinforced heat exchange nail head tube is assembled and welded to form a high-efficiency and energy-saving needle tube heat exchange tube group. Because the nail head tube needle rib is a cantilever structure and has a compact structure, under the impact of the air flow, the needle rib will produce Vibration makes it difficult for soot to accumulate; coupled with the strong turbulent scouring of the flue gas, the heat transfer efficiency of the heat exchange element of the nail head tube is high, and it has a strong self-cleaning ability.

The nail head tube group is especially suitable for compact waste heat boilers, oil-fired, gas-fired boilers and oil heaters. Under the same heat exchange, its weight and external dimensions are greatly reduced. The anti-fouling performance of the nail head tube group is greatly improved compared with other conventional enhanced heat transfer boiler tubes. In the case of low flue gas temperature, the nail head tube can still recover waste heat economically, and has broad application prospects in heat exchange and energy saving projects.

HEXIN Machinery produces various OEM wear and corrosion resistant components for the cement, lime, coal, shot blast machines,and iron Ore industries.
The castings HEXIN made generally are made from special irons and manganese steels, which are critically used in the sectiors of cement manufacturing,coal mining (surface and underground), copper smelting,crushers direct reduction of iron (DRI)
Iron ore manufacturing,Lime manufacturing. All the castings manufactured at HEXIN go through strict quality checks at all stages before being supplied to customers.
Typical Mining & Mineral castings:
Ø Cooler grate plates
Ø Drag chain links
Ø Kiln outlets sector
Ø Immersion tubes for Pre heater
Ø Dipping tube assemblies
Ø Thimbles
Ø Air cannons
Ø Grate plates
Ø Drag chains
Ø Pelletizing grates
Ø Feed chutes
Ø Rotary cooler castings
Ø Burner tips
Ø Liners
Ø Brackets,
Ø Cooler grates
Ø Grate bars
Ø Iron ore feeder rolls
Ø Kiln nose rings
Ø Pallet cars
Ø Precipitator thimbles
Ø Traveling grate components


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