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BussinessPO, Galvanized Pipe

Dangjin Factory 2
Aerial photograph

Dangjin Factory 2
PO Internal1

Dangjin Factory 2
Plated steel pipe Internal2

Location

Facilities

Division Unit number Processing Range (mm) Capacity
(tons/year)
Thickness Width Weights Tensile strength Line Speed
POL 1 1.4~6.5 700~1,650 MAX 30 Ton MAX80kg/㎟ MAX 120 m/min 400,000
SLITTER 1 0.5~6.5 400~1,650 MAX 30 Ton MAX100kg/㎟ MAX 200 m/min 150,000


융융아연도금 강관
설비 사이즈 대수 가공범위(단위:mm) CAPA(톤/년)
외경 두께 길이
도금기 1/2"~2-1/2"(15A~65A) 1 21.0~76.3 1.75~5.20 5,000~8,000 150,000
2"~8"(50A~200A) 1 59.6~216.3 1.85~8.20 5,000~8,000
나사기 G42 전선관 전용(G16~G42) 1 21.0~47.8 2.30~2.50 3,000~3,660 12,000
G16~G104 / ANSI C80.1 1/2"~4" 1 21.0~114.3 2.30~5.72 3,000~8,000

  • UNCOILER

    A facility for loading and unwinding material coils

    Video

  • FLATTENER

    A facility that partially corrects the shape of the top part and pushes the coil in the outward direction

  • PRE-WASH

    Section of washing foreign dirts on the surface of material with water

  • PICKLING TANK

    Section to remove oxide film from the material surface by dipping the coil in the hydrochloric acid tank

  • RINSING & DRY

    Section where the residual hydrochloric acid on the surface of the coil that has passed through the hydrochloric acid tank is washed with water

  • LOOPER

    Free space to prevent stagnation of hydrochloric acid and rinsing zone when dividing coil

  • TENSION LEVELER

    A facility that corrects the wave of the material through gap adjustment of the tension between the recoiler and the tension bridle roll, and the upper and lower rolls of the tension leveler

    Video

  • SDD

    (Surface Defect Detetor)

    A device that detects and stores defects on the surface by scanning through the front and back sensors of the product

    Video

  • MICRO OILER

    A device that sprays rust preventive oil to the product surface as much as the demand of the consumer through the electrostatic oil method

    Video

  • RECOILER

    A device that winds up pickled and oiled products with a certain tension

    Video

  • UNCOILER

    A facility for loading and unwinding material coils

    Video

  • FLATTENER

    A facility that partially corrects the shape of the top part and pushes the coil in the outward direction

    Video

  • LEVELER

    A facility that corrects the wave of the material due to the gap between the upper and lower rolls while generating tension through the difference in rotation of the rolls in the leveler.

  • LASER-TRAK

    A facility that measures the shape using a laser and corrects shape online in the width direction and length direction through feedback control

  • SLITTER

    A facility that cuts the material in the longitudinal direction

    Video

  • SCRAP WINDER

    A facility that winds up the scrap that comes out from the side when slitting

  • LOOPER

    A section that allows for smooth winding in consideration of the length difference in the width direction that occurs during material cutting, and a section that offsets the speed difference when there is a speed difference between the inlet and outlet sides

  • MICRO OILER

    A device that sprays rust preventive oil to the product surface as much as the demand of the consumer through the electrostatic oil method

  • RECOILER

    A device for winding slitted or leveled products

    Video

  • 4ARM TURNSTILE

    A facility that serves as a coil storage unit. It is comprised of a stationary base, internally geared bearing hydraulic motor and pinion, and 4 heavy-duty arms.

  • Pickling

    A process of using sulfuric acid to remove scale and rust from the surface of steel.

  • Rinsing

    Following pickling, a process to clean the residual acid and ferric salt from steel.

  • Flux

    A process of facilitating the galvanizing reaction by applying solvent to prevent, dissolve, and dissipate foreign substances such as scale.

  • Drying

    A process of removing moisture from and preheat steel by applying heat at proper temperatures following pretreatment.

  • Galvanizing

    A process wherein steel is immersed in a zinc bath to have a dense, robust protective film form on its surface through iron-zinc alloy reaction.

  • Withdrawing

    A process of lifting pipes through a magnetic roll in appropriate cycles after the plating reaction is complete.

  • Blowing

    A process that uses air and steam to maintain the cleanliness and uniformity of the internal and external appearance of the pipe.

  • Cooling

    Air cooling and/or water cooling at constant proper temperature

  • Marking

    A process of marking the specifications and product number following visual inspection of the produced plating pipe.

  • Threading

    A process of engraving spiral grooves along the outer circumference of the pipe.

  • Inspection

    A process of inspecting the appearance, surface foreign matter, and straightness of the plated pipe using both naked eye and dedicated equipment.

  • Packing

    A process of forming bundles of plated pipes by stacking them in a hexagonal shape and binding them with steel bands.