TM Hydraulic
Premium Hydraulic Test Point Series
Engineered for extreme pressure and uncompromising reliability.
Global Industrial Status of Pressure Test Couplings
In the modern industrial landscape, hydraulic systems serve as the "muscles" of heavy machinery. As industries strive for higher efficiency and lower downtime, the Spradow-style pressure test coupling has become an indispensable standard. These components, particularly the M16x2 connection system, allow for "plug-and-play" diagnostics under full working pressure (up to 630 bar) without system interruption.
Across Europe, North America, and emerging markets in Asia, the demand for high-quality test points is surging. From offshore wind farms in the North Sea requiring corrosion-resistant stainless steel couplings to massive construction projects in Southeast Asia utilizing heavy-duty excavators, the reliability of a test coupling determines the safety and longevity of the entire hydraulic circuit.
Industry Evolution & Future Trends
Leading the way in hydraulic diagnostic innovation.
The hydraulic industry is undergoing a digital transformation. While traditional mechanical gauges remain popular, there is a clear trend toward smart diagnostic points. Modern Spradow-compatible couplings are now being integrated with wireless pressure sensors and IoT gateways to provide real-time data to maintenance teams located thousands of miles away.
Predictive Maintenance
Switching from reactive to proactive maintenance schedules through high-frequency testing and data logging via standardized test points.
Environmental Protection
Global regulations like REACH and RoHS are pushing factories to adopt zero-leakage designs to prevent hydraulic oil contamination of soil and water.
Miniaturization
As hydraulic systems become more compact in aerospace and robotics, the demand for micro-sized test points (S12.65x1.5) is increasing alongside standard M16x2.
About Us
IKIN is our registered trademark, and TM Hydraulic is the operating company.
We specialize exclusively in manufacturing hydraulic test points & hoses — nothing else. With ISO and SGS certifications, a 5,000㎡ production facility, and new workshops under development, we ensure reliable quality and professional standards.
Our products feature cone-seal, zero-leakage designs, 100% inspection, and a 3-year quality warranty. Based in China, we offer a full range of models and have become a trusted supplier to major brands such as SANY, XCMG, Parker, Hawe, GE, Rexroth, Caterpillar and so on.
Our Milestone Journey
A history of excellence and technological breakthroughs.
2009.7
The company was founded as the exclusive distributor of Germany’s Beta brand in China.
2014.1
We began developing our own hydraulic test fittings, starting with industries with the highest quality demands—wind power.
2017.4
Established manufacturing facility in Changzhou City, Jiangsu Province. Mass production began.
2019-2022
Recognized as a “High-Tech Enterprise of Jiangsu Province” multiple times.
2024
Honored as “Gazelle Enterprise of Jiangsu Province” and recognized for specialization.
Global Procurement Needs & Localized Applications
Tailored solutions for diverse international markets.
International procurement managers face several challenges when sourcing wholesale Spradow pressure test couplings: ensuring cross-brand compatibility, managing lead times, and verifying material integrity. As a dedicated Chinese factory, we address these by providing M16x2, M16x1.5, and S12.65x1.5 fittings that are 100% interchangeable with European brands but with significantly more competitive lead times.
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Energy Sector: High-pressure gas and oil hydraulic circuits require explosion-proof and leak-proof couplings.
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Mobile Machinery: Crane and excavator manufacturers in the US and Brazil demand durability against vibration and extreme temperatures.
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Custom Solutions: We offer customized logos and thread types to support local brand distributors in their own markets.
Why Choose Our Factory?
The IKIN/TM Hydraulic advantage.
ISO-certified
Certified to ISO standards for consistent quality and global compliance.
Zero-leakage
Patented cone-seal design ensures leak-free performance under extreme pressure.
100% Pressure Tested
Each product is fully pressure tested before delivery. No exceptions.
Pressure Testing Experts
Over 10 years focused strictly on hydraulic test fittings and diagnostic tools.
Trusted Supplier
Strategic partner for SANY, Parker, and Caterpillar. Stable, long-term supply chains.
Brand Customization
Logo customization available for our wholesale partners at no extra cost.
International Market Footprint
From China to the World.
Additional Pressure Testing Accessories
Completing your hydraulic diagnostic toolset.
Technical Specifications and Material Excellence
Our China-based pressure test coupling factory utilizes high-grade materials to meet international standards. For standard applications, we use high-strength carbon steel with Zinc-Nickel coating, providing over 720 hours of salt spray resistance (far exceeding the industry standard). For corrosive environments, we provide Stainless Steel 316Ti options.
Connection Standards
We manufacture to ISO 15171-2 standards, ensuring that our couplings are interchangeable with Spradow, Minimess, and Test point brands. This compatibility is crucial for maintenance crews who need to replace parts on Caterpillar or Liebherr machines without searching for proprietary tools.
Temperature and Sealing
Utilizing high-performance seals (NBR as standard, Viton/FKM for high temperatures), our couplings operate reliably from -20°C to +120°C, making them suitable for both Siberian oil fields and Middle Eastern deserts.