Elevate Your Bearing Life with Liaocheng’s Finest Precision Engineering.
In the world of high-speed rotation and extreme loads, the quality of your raw material determines the lifespan of your machine. Shandong Haihui Steel Industry Co., Ltd. presents the GCr15 Precision Seamless Steel Tube—a product engineered for those who refuse to compromise on durability.
Why Haihui GCr15? The Digital Difference
We don’t just sell steel; we sell certainty. Our GCr15 tubes are defined by four critical technical benchmarks that set us apart from standard suppliers:
[O] ≤ 10ppm
Fatigue failure starts at microscopic inclusions. By utilizing LF+VD vacuum degassing refinement, we maintain oxygen levels at or below 10ppm. This ensures a “clean” steel structure with minimal non-metallic inclusions, effectively doubling the contact fatigue life of your bearings.
±0.03mm ~ ±0.05mm
Why waste 30% of your material in machining? Our cold-rolled GCr15 tubes achieve a dimensional tolerance as tight as ±0.03mm. This high concentricity allows for direct use in high-speed CNC automatic lathes, reducing your machining time by up to 25%.
Grade 2-3
Hardness is nothing without uniformity. Our protective atmosphere annealing process ensures a consistent hardness of 179-207 HB and a spheroidizing microstructure of Grade 2 or 3. This translates to excellent machinability and predictable heat treatment response during your final hardening process.
Ra ≤ 0.4μm
For needle bearings and thin-walled bushes, surface is everything. Our tubes feature a mirror-like internal finish, reducing friction and ensuring silent operation of the final component.
Applications: Where Reliability Matters
Our GCr15 tubes are the preferred choice for:
Quality Assurance: 100% Tested, 100% Trusted
We implement a digitized quality protocol for every batch:
With an annual capacity of 60,000 tons and IATF 16949 certification, Shandong Haihui Steel is more than a factory—we are your technical partner in the bearing industry.
Post time: May-27-2026