Successful Mass‑Production of Φ28 mm Extra‑Large‑Size Wire Rod at Jinding Steel
Recently, exciting news came from Jinding Steel: Φ28 mm extra‑large‑size wire rod, the maximum‑specification product of its production line, has gone into mass production, with both dimensional accuracy and mechanical performance fully qualified. This milestone marks a new leap forward for Jinding Steel in the large‑size wire‑rod sector and provides downstream steel‑pipe manufacturers with more stable and high‑quality raw‑material support.
1. Breaking the Limit: The Maximum‑Size Wire Rod of the Production Line Rolls Off Successfully
The Φ28 mm wire rod represents the largest specification rollable on Jinding Steel’s current production lines. Previously, large‑size wire‑rod output remained a weak link in its product portfolio. Strong market demand could not be met in large‑volume supply due to technical bottlenecks. The recent mass‑production success means Jinding Steel has fully opened up the whole workflow from R&D to bulk manufacturing for large‑size wire rods, further enriching its product‑specification matrix.
For steel‑pipe manufacturers, a broader range of raw‑material specifications expands material‑selection options and improves flexibility in production scheduling. The stable supply of Φ28 mm wire rod will directly benefit downstream clients requiring large‑diameter, high‑strength steel pipes.
2. Three Major Technical Challenges Overcome by the Engineering Team
Rolling large‑size wire rod is far more complex than simply scaling‑up dimensions. The first challenge the project team faced was pass‑design. Larger specifications bring more uneven metal deformation, so the pass system had to be re‑optimized to guarantee uniform metal flow and stable finished dimensions.
The second hurdle was sectional temperature control. During rolling, a large‑cross‑section wire rod suffers a notable temperature difference between its core and surface. Improper temperature control easily causes uneven microstructure and fluctuating mechanical properties. By finely dividing temperature‑control sections and precisely matching temperature parameters for each segment, the technical team achieved full‑process temperature regulation.
The third difficulty lay in equipment retrofitting. The original production line was not designed for this extreme large‑size product. Rolling force, guide guards and laying‑head sections all required targeted upgrades. The project group collaborated with equipment‑management departments to optimize key components, ensuring equipment capacity matched process requirements.
3. Dual‑Indicator Compliance: Accuracy and Performance Fully Verified
The mass‑production test delivered encouraging results. The Φ28 mm wire‑rod achieves full compliance on dimensional accuracy, with ovality and tolerance kept within premium ranges. All mechanical‑property indicators including tensile strength, yield strength and elongation are stable and reliable.
For steel‑pipe fabricators, raw‑material dimensional accuracy directly affects finished‑product yield and pipe quality during subsequent processing, while mechanical performance determines load‑bearing capacity and safety margin of final pipes. What Jinding Steel delivers is not merely coils of wire rod, but a reliable quality commitment.
4. Filling the Capacity Gap: Large‑Size Wire‑Rod Production Capacity Comes Online
The successful mass‑production of Φ28 mm wire‑rod fills Jinding Steel’s capacity shortfall in the large‑size wire‑rod segment. The company now covers a wider specification range for wire‑rod products, enabling it to better satisfy market demand for large‑size, high‑performance wire‑rod used in high‑end sectors such as engineering machinery, bridge construction, petrochemical industry and automobile manufacturing.
As steel‑pipe producers, we recognize that every technical breakthrough from upstream raw‑material suppliers translates into enhanced competitiveness for downstream products. Jinding Steel’s continuous investment in large‑size wire‑rod technology strengthens raw‑material security across the whole steel‑pipe industrial chain.
5. Strong Up‑stream Support Promises Bright Prospects for Industrial‑chain Collaboration
Behind every Φ28 mm wire‑rod coil lie repeated pass‑design simulations, fine‑tuning of temperature‑control parameters and day‑and‑night efforts on equipment modification. Jinding Steel’s achievement proves that technological advancement in steel enterprises never happens overnight; it is realized by conquering one extreme technical challenge after another.
For the steel‑pipe industry, technical upgrades from upstream steel mills bring richer material‑selection choices, steadier quality and broader application potential. We look forward to deepening cooperation with outstanding upstream suppliers represented by Jinding Steel, jointly advancing steel‑pipe products toward higher strength, larger specifications and superior performance, and delivering greater value for end‑users.
Jia hui