In the industrial field, the quality of valves is not only related to equipment efficiency, but also directly affects personnel safety and environmental protection. OneTree has always regarded “zero defects” as the ultimate goal of quality management. Through an international certification system, strict production control and scientific testing technology, it ensures that every valve is delivered to customers with excellent performance. The following reveals the five core pillars of OneTree’s quality assurance system.
I. International certification: the cornerstone of quality management
OneTree’s quality management system has passed a number of global authoritative certifications, providing an “international passport” for product performance:
ISO 9001:2015 quality management system certification: standardized control throughout the entire process of R&D, production, and service;
API 6D (oil and gas pipeline valve standard): ensure that the product is resistant to high pressure and corrosion, and is suitable for extreme working conditions in the oil and gas industry;
CE certification (EU safety compliance): complies with PED 2014/68/EU Directive to ensure the safety of pressure-bearing equipment;
ISO 14001 environmental management system: green production processes reduce resource waste and pollution emissions.
Data endorsement: More than 500 customers in 12 countries around the world choose OneTree, and the product failure rate is less than 0.02% (the industry average is 0.1%).
II. The entire production process: lean manufacturing, precise control
From raw materials to finished products, OneTree implements “5 key links” quality interception:
Material traceability:
Only special alloys from internationally renowned steel mills such as Baosteel and Sandvik are purchased;
Each batch of materials undergoes spectral analysis (OES) and mechanical property testing to eliminate inferior raw materials.
Precision machining:
Using CNC five-axis machine tools and robot welding, the key dimensional tolerance is controlled to ±0.01mm;
The valve seat sealing surface is mirror polished (Ra≤0.4μm) to ensure zero leakage.
Digital management:
The MES system monitors production data in real time, and the process qualification rate exceeds 99.8%;
Each valve has a unique ID, and the quality is traceable throughout the process.
III. Factory inspection: 28 rigorous tests, only for 100% reliability
All products must pass the “three-stage test method” before they can leave the factory:
| Testing stage | Core project | Standards and equipment |
| Performance test | Sealing test, pressure cycle test | API 598, ISO 5208; 2000-ton hydraulic testing machine |
| Durability test | 100,000 times of opening and closing life test | Simulate actual working conditions and record changes in torque and leakage |
| Environmental test | High and low temperature impact, salt spray corrosion test | -40℃~300℃ temperature box, ASTM B117 standar |
Typical case: A batch of ball valves performed well in the salt spray test, with no rust for 480 hours (far exceeding the industry’s 168-hour requirement), and were successfully used in the Middle East high salt spray oil and gas field project.
IV. Customer Commitment: Quality is not only about delivery
OneTree practices the quality assurance for customers with the concept of “Lifetime Service”:
Warranty policy: All series of products enjoy 18-month long warranty and lifelong maintenance support;
Quick response: Provide technical diagnosis within 48 hours, and direct global spare parts within 72 hours;
Value-added services: Free installation training, regular inspections and preventive maintenance suggestions.
V. Continuous improvement: Drive quality upgrades with customer needs
Customer feedback closed loop: Establish a global quality case library, analyze fault data every quarter, and optimize design;
R&D investment: 6% of annual revenue is invested in new technology development, such as AI-driven intelligent quality inspection system;
Industry collaboration: Participate in the formulation of 3 GB/T national standards and 2 ASTM international standards.
Choose OneTree, choose peace of mind
We know that every valve carries the trust of customers. OneTree escorts your project with systematic quality control, transparent production process and sincere service commitment.
Contact us now to obtain authoritative certification documents or customized quality solutions!
www.joinonetree.com | Customer service hotline: 86 13353715063| Email: sales@joinonetree.com