EN 10346 Prepainted Steel Coil Pre Coated Steel AISI ASTM Standard

Prepainted galvanized steel coils are composite materials consisting of a galvanized steel

substrate coated with organic paint layers. They combine the corrosion resistance of zinc

coating with the decorative and weather-resistant properties of colored coatings, widely

used in construction, appliances, and transportation industries.

Mechanical Properties

Tensile Strength: 280-550 MPa

Yield Strength: 140-350 MPa

Elongation: 15%-30%

Hardness: HRB 40-80

Bendability: Capable of 180° bending (T-bend test: 2T-4T qualified)

Thermal Properties

Operating Temperature Range: -40°C to 120°C (long-term)

Instantaneous Heat Resistance: Up to 200°C (special coatings)

Coefficient of Thermal Expansion: 11.5×10⁻⁶/°C (similar to carbon steel)

Surface Texture

Smooth Surface: Mirror-like finish

Fine Texture: Slight orange-peel effect

Embossed Surface: Regular patterns (wood grain, stone, etc.)

Sandblasted Surface: Uniform matte texture

Major Applications

(1) Construction (60% Market Share)

Roofing/Wall Cladding: Airports, stadiums, factories (PVDF-coated).

Sandwich Panels: PU/PIR or rock wool cores (fireproof insulation).

(2) Appliances (25%)

Refrigerator/AC casings (EG + PE, smooth finish).

Washing machine panels (antibacterial coating).

(3) Transportation

Shipping container houses, truck bodies (high-strength GI).

Subway station decor (fire-resistant coated steel).

Our company’s mainly advantages

♦ We have rich export operation experience for this product, and we know about the common-used

spec in your country.

♦ We have long-term cooperation with our Forwarder Agent, and harbor reinforcement team,

they dedicated to the operation of these raw material product for over 10 years.

♦ For every order, we have strictly packing and loading demand, we also take samples from

the batch product, check the mechanical properties and the capacity of corrosion resistant.

Qingdao Jero steel company is a professional raw material integrated supplier, located in the beautiful costal city, Qingdao,

mainly product is steel material and Aluminum alloy sheet/coil.

We own a very comfortable work environment, and humanized management system, we hope that a job can not only bring

salary, ability, friendship, experience, but also bring happiness, passion, and the sense of achievement.

• We guarantee the product quality by our inspection team, professional equipment, that is the key point for getting a stable

 and sustainable development.

• We have strictly constraint for every step, such as production, package, inspection, delivery etc.

• Besides, we have excellent sales team, each member have over 4 years raw material export experience, they can judge the

 market changes to a certain extent and provide some reasonable advice for customers.

A stable customer can bring us good reputation and constantly economic benefit. For the past years, relying on a perfect quality

management system and a rigorous service attitude, we get a trusted brand image in the minds of customers.