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In international metallurgy and global structural design frameworks, the term Steel Coil 085 represents a key structural nominal thickness profile of 0.85mm (often referenced in high-strength cold-rolled, pre-galvanized, or zinc-aluminum alloy-coated systems). Used extensively in building panels, industrial steel purlins, framing profiles, and light-gauge steel framing (LGSF), this precise gauge balances mechanical strength with forming versatility.
As standard-specification coils, 0.85mm structural steel products demand strict control of chemistry and mechanical uniformity to ensure they conform to standards such as ASTM A653/A653M, EN 10346, and JIS G3302. Understanding these parameters is critical for structural engineers procuring coils for industrial tube rolling, agricultural structures, or high-tensile structural building envelopes.
Operating from our modern facilities, Tianjin Minjie Steel Co., Ltd utilizes continuous-immersion pickling, tandem cold-rolling mills, and high-capacity galvanizing plants to supply consistent 0.85mm steel coils that withstand high mechanical stress and harsh outdoor environments.
Comprehensive metallurgical breakdown of structural Steel Coil 085 grades produced across state-of-the-art continuous rolling lines.
| Steel Grade Standard | Nominal Thickness (mm) | Yield Strength (MPa) | Tensile Strength (MPa) | Elongation A80 (%) | Carbon Content (C) % max | Manganese (Mn) % max |
|---|---|---|---|---|---|---|
| SGCC (JIS G3302) | 0.85 mm | ≥ 205 | ≥ 270 | ≥ 33% | 0.15% | 0.60% |
| S250GD (EN 10346) | 0.85 mm | ≥ 250 | ≥ 330 | ≥ 19% | 0.20% | 1.70% |
| S350GD (EN 10346) | 0.85 mm | ≥ 350 | ≥ 420 | ≥ 16% | 0.20% | 1.70% |
| CS Type B (ASTM A653) | 0.85 mm | 205 - 380 | ≥ 310 | ≥ 20% | 0.15% | 0.60% |
Founded in 1998, Tianjin Minjie Steel Co., Ltd has established itself as an authoritative producer and exporter of structural steel coils, high-performance structural pipes, hollow sections, and custom scaffolding systems. Spanning an expansive production footprint of over 70,000 square meters, our facilities are located just 40 kilometers from XinGang Port—the largest maritime gateway in Northern China. This logistics advantage enables rapid dispatch, minimizing handling costs and transit times for international projects.
Over the past two decades, we have focused on technological innovation and patent development. Our production lines feature 3 proprietary patents, including custom groove pipes, shoulder pipes, and victaulic coupling pipe designs. Supported by 4 pre-galvanized lines, 8 ERW line installations, and 3 hot-dipped galvanized processing lines, our annual output exceeds 300,000 tons of premium-grade steel products certified under the strict ISO 9001 quality management framework.
Delivering high-tensile structural steel solutions across borders through rigorous engineering standards and regular onsite client collaboration.
Our collaborative trade channels supply major infrastructure projects across Singapore (onsite visit in 2019) and South Korea (assisting developers with precision-designed structural tube systems). In 2019, Indian clients finalized monthly rolling contracts for 10 structural container systems, confirming our position as a reliable supplier.
We work with Australian distributors to supply zinc-aluminum-coated coils that meet local wind-load and atmospheric ratings. We also provide structural framing, building angles, and scaffold pipes tailored for harsh coastal conditions.
In 2017, a project delegate from Lebanon completed technical reviews at our site, placing an immediate order for 1,000 tons of specialized piping. Similarly, since the 2018 Canton Fair, we have maintained a long-term supply relationship with partners in Saudi Arabia for standard-gauge hollow profiles.
From raw slag management to high-precision cold rolling, slitting, and continuous hot-dip zinc-alloy metallization.
Hot-rolled carbon coils are processed in continuous acid baths to strip oxide scale, preparing the steel substrate for cold reduction.
The cleaned strip undergoes cold rolling to achieve a precise target nominal thickness of 0.85mm, ensuring structural flatness and uniform grain structure.
The 0.85mm strip passes through molten zinc (or zinc-aluminum-magnesium alloy baths) to form a robust sacrificial barrier layer.
Tension leveling processes optimize flatness, followed by chemical chrome-free passivation to prevent white rust during ocean transit.
How our steel coils are processed into structural tubes, equal angle bars, and high-performance scaffolding systems.
At Tianjin Minjie, our steel manufacturing operations are designed as a vertical solution loop. Instead of just exporting primary steel coils, we process our high-grade coils into finished industrial products to add value:
This integration ensures complete control over structural tolerances and metallurgical quality, from the raw coil stage down to finished components ready for installation.
Our quality control processes ensure that structural Steel Coil 085 products conform to international requirements. Every batch undergoes strict mechanical testing, including:
These testing standards ensure that all structural profiles, scaffolding components, and angle brackets from our facilities deliver long-term performance and reliability.
Common questions regarding steel grades, processing tolerances, shipping setups, and procurement options.
Our extended range of certified building products, including scaffolding clamps, structural tubes, and custom rolled profiles.
Minjie Steel