Climate
Mild winters and warm, wet summers; about 1,192 mm of rain a year.
POSCO's Pohang works runs three remaining blast furnaces after the first was shut down in December 2021, alongside basic oxygen and electric arc furnace routes. It is headquarters of POSCO, which has an integrated steelworks there, and steel plant gas systems and dust create classified areas. A hazardous area smartphone distributor in Pohang would carry the IS-04Z1 to these buyers once certification completes.
Pre-launch · certification in progress · Launching Q4 2026
Short answer. Pohang has no appointed SAMS distributor yet: the IS-04Z1 is pre-launch (certification in progress, no certificate issued, launch planned for Q4 2026), and distributor applications are open.
Status: pre-launch. IECEx, ATEX, UKEX and NEC 500 certification is in progress and no certificate has been issued; launch is planned for Q4 2026. A buyer's engineering review is separate from the certificate. Certification status. Place facts reviewed October 2026.
| Check | What to look for | IS-04Z1 today |
|---|---|---|
| Zone | 0, 1 or 2 for gas; 20, 21 or 22 for dust | Designed for Zone 1 and Zone 21 |
| Gas group | IIA, IIB or IIC | IIC (target) |
| Area drawing | The operator's own classification drawing | Decided by the site operator |
| Where it applies | Pohang: Steelworks process gas systems, Coke-making and by-product gas, Steel plant dust areas | Classified by the site operator |

An intrinsically safe Android smartphone designed for Zone 1 and Zone 21 hazardous areas in Pohang. It is pre-launch: IECEx, ATEX and NEC 500 certification is in progress ahead of the Q4 2026 launch.
The companies on site and the hazardous-area types a handset is likely to meet there.
Mild winters and warm, wet summers; about 1,192 mm of rain a year.
POSCO's Pohang plant was dedicated in 1973 and POSCO runs two integrated steelworks, at Pohang and Gwangyang.
The city is promoting itself as a diversified centre of environmentalism, advanced learning and culture, to reduce its reliance on heavy industry such as steelmaking.
Pohang's shipping port and road arteries made it strategically significant in the mid-twentieth century, and the port remains the city's sea gateway on the East Sea coast.
After four expansion phases the Pohang plant's crude steel capacity rose from 1.03 million tonnes a year at start-up to 9.1 million tonnes by 1983.
The local economy has combined iron, steel, shipbuilding and fisheries, and the city is now trying to diversify away from heavy industry towards advanced learning, environmental projects and culture.
A hazardous area is a place where flammable gas, vapour or combustible dust may be present. Standards divide these into zones: Zones 0, 1 and 2 for gas and vapour, and Zones 20, 21 and 22 for dust. Zone 1 and Zone 21 are the tier where an explosive atmosphere is likely to occur in normal operation, which is where the IS-04Z1 is designed to work. Anything carried in must be marked for the zone, gas group and temperature class of the area.
No certificate has been issued for the IS-04Z1 yet, so it must not be taken into a classified area until the certificate covering it exists and the site operator has accepted it.
In Pohang. Classified areas at the works include process gas systems, coke-making and by-product gas, and steel plant dust areas. POSCO classifies them, not SAMS. No POSCO document was read for this page, so a specifier should ask for the actual classification rather than rely on general steelworks practice.
Distribution of the IS-04Z1 is by authorised partners only, and SAMS has not yet granted a territory for Pohang. Each application is reviewed on its merits. Because opening a certified Ex handset in an ordinary workshop invalidates its certificate, the partner must be able to support and service the device locally.
Not today. Until the certificates are issued the IS-04Z1 stays out of classified areas, and until launch there is nothing to purchase. You can ask for the datasheet and the certification schedule, or book a safe-area evaluation unit.
There is no list price yet. SAMS gives indicative pre-launch pricing in writing, against a stated quantity and site, and does not commit to a lead time before certification completes.
Zone 1 and Zone 21 (gas and dust) with gas group IIC and temperature class T4, subject to certification. It must not be used in a classified area before its certificate is issued and the site has accepted it.
Likely candidates are steelworks process gas systems, coke-making and by-product gas, steel plant dust areas. Which areas are classified, and to what zone, is set by the site operator's own area classification drawings.
Apply through the distributor page with your company details and the territory you cover. SAMS reviews applications company by company and has not yet granted a territory for Pohang.
Winters are mild by Korean standards, with a January mean near 2 degrees, while summers reach about 26 degrees with the heaviest rain in August. Sea air and humidity are the main concerns, so devices typically need good sealing and routine cleaning.
Pohang is on the East Sea coast with a shipping port and road links, and most equipment arrives by road from other Korean ports or airports. Allow time for customs clearance and for site gate checks on electronic devices at the steelworks.
They can. Coke-making and by-product gas systems may contain gases such as hydrogen or carbon monoxide, which affect the gas group needed, and plant dust areas need a dust classification. The IS-04Z1 has no certificate yet. Ask POSCO which gas and dust groups apply.
More on Pohang, and on other places in South Korea.
Tell us what you need to equip and where. The SAMS team answers by email with the datasheet and where each certification route stands.
Send the zone and gas group of your site and we will reply with the datasheet and schedule.