RUNGOLD
dyrj@rungold.net
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+86  5462027789
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About Us
As a leader in the OTR tire solutions sector, Dongying Runjin Group has been dedicated to innovation and breakthroughs in tire technology for sixteen years. We focus on the R&D, design, and manufacturing of road and off-the-road tires suitable for diverse terrains and complex working conditions. Our product portfolio includes radial engineering tires, giant tires, and special-purpose tire series, which are exported to more than 135 countries and regions worldwide, supported by a comprehensive global distribution network.
Adhering to the core values of "Customer Success, Excellence through Refinement," Rungold embraces a long-term perspective and fosters collaboration through open communication. Our mission is to deliver products and services of exceptional value to users across the globe, driving the synergy of economic growth, social responsibility, and environmental stewardship while empowering employee development—all as we accelerate toward becoming a world-renowned premium brand.
2,5000
+
Company Size
150
+
OTR Solutions
Construction Tires

23.5-25 E3/L3

26.5-25 E3/L3 NEW

LOADER TYRES E-4

MINE TYRES E-3

Agricultural Tires

AGRICULTURAL TYRES TRACTOR DRIVE TYRES R1

FARM IMPLEMENT TYRES R-1B

AGRICULTURAL TRACTOR ORIENTED TYRES F-2

AGRICULTURAL TRACTOR ORIENTED TYRES F2-3

TRACTOR ORIENTED TYRES I-1

AGRICULTURAL PADDY FIELD TYRES R2

AGRICULTURAL IRRIGATION TYRES 11.2-24 12.4-24 13.6-24 14.9-24 11/11.2-30 R1-10

Construction Tires​​​​​​​

INDUSTRIAL SKID STEER TYRES 10-16.5TL 12-16.5TL SKS-4

INDUSTRIAL BACKHOE TYRES R4-B

INDUSTRIAL SKID STEER TYRES SKS-1 SKS-2 SKS-3 SKS-4 SKS-5

INDUSTRIAL ROAD ROLLERS TYRES R-3

INDUSTRIAL TRACTOR TYRES R-4 L-5

INDUSTRIAL TRACTOR TYRES 16.9-24TL 16.9-28TL 17.5L-24TL 19.5L-24TL 21L-24TL R-4

INDUSTRIAL SKID STEER TYRES 10-16.5TL 12-16.5TL SKS-3

COMPANY NEWS
How to Select the Right OTR Tire Tread for Different Mining Conditions - Cover.png
2026-05-11
How to Choose the Right OTR Tire Tread Pattern for Different Mining Conditions

Learn how to choose the best OTR tire tread patterns for quarry, mining, underground, and loader applications. Improve tire life, traction, and fuel efficiency with GREAMARK OTR tires.

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2026-05-28
The Crane That Lost Its Rim Every 90 Days – And Why Corrosion Wasn’t the Real Problem

A Nebraska farm lost crane rims every 90 days to what they called rim flange corrosion. Better paint and zinc primers failed within weeks. Temperature logs showed flange temperatures above 85°C for eight hours on humid night shifts, while 15 hard turns per night rubbed the coating off bare metal. A softer sidewall compound helped slightly, but only switching to a bias-ply durability design eliminated the problem—cutting corrosion frequency by roughly 55% and improving cost per operating hour by 30%. The real issue wasn‘t moisture alone. It was heat, humidity, and friction working together.

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2026-05-08
Why Choose Bias Tires in Mining Conditions? A Comprehensive Analysis of Impact Resistance and Blowout Prevention Advantages

This article explains why bias tires (cross ply tires) remain the preferred choice for mines, quarries, and other high‑impact conditions. Based on their multi‑layer crossed‑ply structure, bias tires convert instantaneous impact loads from stress concentration into stress diffusion through microscopic inter‑ply movement, thereby absorbing energy and preventing localized damage. Compared with radial tires, bias tires offer superior impact resistance, puncture resistance, crack propagation control, and heavy‑load lateral stability, making them ideal for low‑speed, high‑load, and rough‑terrain mining operations. The article also provides selection recommendations for dump trucks, loaders, and underground equipment, along with key maintenance tips. It concludes that bias tires continue to play an irreplaceable role in construction machinery and mining transportation due to their reliability and structural adaptability.

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