Steel Pipe Hot Dip Galvanizing Line

Capacity: 60000 tons per year (TWO SHIFTS PER WORKING DAY)  
Hot galvanizing plate (CGL), to dip the raw metal after surface pretreating, into liquid metal or alloy, which owns low melt point, during the process, the metal could get a protection layer, specially, the coated layer can form a metallurgy alloy with basic metal.

The raw metal is always low carbon steel, alloy steel, cast iron, stainless steel. For coating melted metal, we always adopt zinc, aluminum, lead, tin or nonferrous, among these, zinc is most popular uses, for largely output, various specifies and widely uses. During whole processing, cold / hot rolled steel strip after processes as follows, uncoil, shear, welting, electro or alkali cleaning, entry storage loop, heating annealing and deoxidizing, hot dipping galvanizing, thickness controlling by air blade, spangle dealing, cold, skin pass mill, leveller, passivation, exit storage loop, electrolytic oiling, shear and coiling, finally, the finished product is hot galvanized steel strip/coil. For this zinc coated steel plate, possess ideal corrosion resistance, easily moulding and coating, as well as its costly and good looking specialties, mainly apply for on construction, automobile, electrical appliances, now it is one of the fastest steel industrial within the whole steel improvement.

Comparing to electrical potential of normal steel, chemical potential of hot galvanized steel is better, furthermore, it enjoys more excellent electrical chemical protection, thicker and more density and good basic adhesiveness of coating layer, 600g/m2 zinc content of finished coating steel can ensure 30 years serviceable life, and no need to maintain it during using time. Addition to steel coil/strip, for its good applicability on steel shape, sizes, or dimension, this galvanizing technology also could be widely used in steel tube, wire or compositional pieces, with high efficiency, competitive to other surface coating ways. Otherwise, for normal uses on compositional piece

Acid-vapour-scrubbing-tower	Acid-vapour-suction-hood	Acid-vapour-suction-hood
Acid-vapour-suction-unit	Acid-vapour-suction-unit	control-panel
fluxing-generation-plant	galvanizing-furnace-combustion-system	material-transfer

Process flow of hot-dip galvanizing line:
Coil loading car--- pay-off reel� �--- 5-roll tension leveler�--- shearing 1 ----5-roll tension leveler�--- shear 2 ---- 2-roll pinch device�--- welding machine ----2-roll pinch device �--- bridle roll�--- electrolytic degreasing section---- steam drying device�--- bridle roll�--- rectifying roll (1# CPC) ----vertical storing loop�--- rectifying roll (2# CPC) ---- bridle roll �----tension measuring roller ---- heating furnace---- soaking furnace---- furnace throat---- cooling furnace---- temperature equalization furnace---- thermal tension roller ----furnace nose---- zinc pot ---- sank roller---- air knife---- cooling tower ---vertical air cooling unit 1#, 2#, 3#---- Turning and rectifying roll�#CPC�--- horizontal air cooling unit ---- turning roll ----vertical air cooling unit 1#, 2#, 3#---- quenching tank ----heat air blowing---- dry double-roll rectifying roll（with 4#CPC�--- bridle roll �----wet skin pass mill---- tension leveler---- bridle roll V ----spraying type passivity----steam drying device�--- rectifying roll (5# CPC) ---- storing loop�--- rectifying roll (6# CPC)---- bridle roll�----Inspection platform ----electrostatic oil coater---- 2-roll pinch device�--- shear---- 2-roller pinch device�--- tension reel---- coil unloading car.