PRODUCT DETAILS
G550 galvanized coil is a surface galvanized sheet with yield strength of 235MPa.
Galvanized coil, a thin steel sheet that is dipped into a molten zinc bath to adhere a layer of zinc to its surface. It is mainly produced by the continuous galvanizing process, in which rolls of steel sheet are continuously dipped into a bath of molten zinc to make galvanized steel sheet; alloyed galvanized steel sheet. This steel sheet is also manufactured by the hot dipping method, but immediately after leaving the bath, it is heated to about 500°C to produce an alloyed coating of zinc and iron. This type of galvanized coil has good paint adhesion and weldability.
| Item | Specification |
|---|---|
| Product Name | G550 Structural Galvanized Steel Coil |
| Place of Origin | China |
| Type | High-Strength Galvanized Steel Coil |
| Standard | ASTM A653 (G550), JIS G 3302 (SGCC 550), DIN EN 10346 (S550GD) |
| Certificate | ISO 9001 |
| Grade | G550 (Min. Yield Strength 550 MPa), Equivalent to SGCC 550, S550GD |
| Base Steel Grade | High-strength low-alloy (HSLA) or specially processed carbon steel |
| Thickness | 0.1-5 mm |
| Surface Treatment | Anti-fingerprint / Skin pass / Oiled / Dry / Chromated |
| Coating Type | Electro galvanized or Hot-dip Galvanized |
| Coating Mass | Standard coating (e.g., Z60–Z275) or customized |
| Size | Customized as required |
| Tolerance | ±1% |
| Processing Service | Bending, Welding, Decoiling, Cutting, Punching |
| Invoicing | By actual weight |
| Delivery Time | 7-15 days |
| Technique | Hot-dip Galvanized / Electro galvanized |
| Port | Tianjin, Qingdao, or as required |
| Packaging Details | In bundles, in bulk, or customized packing |
| Key Application | Structural components, high-strength frames, roofing & wall systems, automotive structural parts, shelving systems |
| Note | G550 refers to minimum yield strength of 550 MPa. Material is suitable for structural applications requiring high strength and corrosion resistance. |

Packing and shipping
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Application Areas
Steel is widely used in steel structure workshops, bridge frames, main structures of high-rise buildings, and infrastructure construction (such as highways, oil and gas pipelines). Its high strength properties ensure load-bearing stability and seismic performance. In ship manufacturing, steel is used to build hull structures, decks, and internal components. Hot-rolled coils rely on their load-bearing capacity to adapt to harsh environments.

Factory workshop
With a commitment to excellence, innovation, and sustainability, the company has established itself as a trusted partner in the international steel industry.After nearly two decades of relentless endeavour, our client base now spans over 110 countries and regions across Europe, the Middle East, South America, and Southeast Asia.











