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Automatic projection welding line for steel grating at the JUNIN plant
Steel Grating Manufacturer · Korea

Steel grating for Korea's industrial plants, made by JUNIN

From petrochemical plants and power stations to semiconductor fabs and data centers, we have delivered 37,300 tons of steel grating over the past ten years.

  • 37,300tDelivered over 10 years
  • 6,205Delivery orders
  • 350+Customers
  • Up to1,000t/moGrating production capacity
About

From rolled bar to shipment,
one site, one continuous flow

Founded in 2016, JUNIN has focused on one product: steel grating. At our plant in Hwaseong, Gyeonggi-do, we control every step in house: automatic projection welding, fabrication, hot-dip galvanizing, three inspections and packing.

Every panel is made to the customer's drawings, with dimensional tolerances per NAAMM (National Association of Architectural Metal Manufacturers). Our quality and environmental management systems are certified to ISO 9001 and ISO 14001.

About the company
Front of automatic projection welding machine No. 2
Process

A production line built on three automatic projection welding machines

Three 2,230 kVA automatic projection welding machines run in parallel, so we can handle large project volumes and tight delivery dates at the same time.

Facility & capacity
  1. Automatic projection welding
    STEP 1

    Projection Welding

    Bearing bars and cross bars are joined into one piece by electric resistance projection welding.

  2. High-speed cutting
    STEP 2

    High-speed Cutting

    Panels are cut to the dimensions on the drawing.

  3. Shape cutting
    STEP 3

    Shape Cutting

    Cut-outs are made for pipes and columns.

  4. Welding
    STEP 4

    Welding

    End bars and cut-out banding are welded on.

  5. Grinding
    STEP 5

    Grinding & Inspection

    Welds are ground and checked against NAAMM tolerances.

  6. Hot-dip galvanized grating
    STEP 6

    Galvanizing & Shipment

    Hot-dip galvanized, inspected and shipped.

Projects

Where JUNIN grating is installed

Supplied through steel structure fabricators to semiconductor, petrochemical, airport and overseas plant projects.

10-year track record
Semiconductor

Samsung Electronics Godeok & Dongtan fabs (P3, P4, etc.)

Samsung C&T
2019–2024approx. 3,630t
Petrochemical

SHAHEEN Project

S-OIL
2024approx. 1,680t
Petrochemical

MFC Project

GS Caltex
2019–2020approx. 1,280t
Petrochemical

HPC Project

Hyundai Chemical
2020approx. 1,130t
Airport

Phase 4, Terminal 2 Baggage Handling System

Incheon International Airport Corp.
2021approx. 920t
Overseas Plant

PEMEX DNBR Module (Mexico)

Samsung Engineering (now Samsung E&A)
2021approx. 900t

Send us your drawings for a spec and lead-time review

We will propose bearing bar sizes that suit your span and load conditions.