QUALITY CONTROL
Standard
Our production and testing standards comply with international standards such as EN 1337 in Europe, AASHTO in USA, JSCE or JIS in Japan or others.
Bridge Bearings
EN 1751 - European Standard
AASHTO LRFD Bridge Design Specifications - United States
BS EN 13677 - British Standard
JIS B 8817 - Japanese Industrial Standard
ISO 19651 - International Standard
Bridge Expansion Joints
EN 1337 - European Standard
AASHTO LRFD Bridge Design Specifications - United States
BS EN 1337 - British Standard
JSCE Guidelines - Japan
ISO 22762 - International Standard
Building seismic isolation
EN 15129 - European Standard
AISC 358 - United States
ASCE 7 - United States
AISC 358 - Seismic Isolation Structures for Buildings
ISO 22762 - International Standard
GB 50183-2018 - Code for Seismic Design of Buildings
Testing Items
Our factory laboratory is capable of completing all testing projects.
Bridge Bearings
- Rubber property: Hardness, Tensile Strength, Elongation, Abrasion Resistance, Aging resistance, etc
- Bearing Property: Vertical Loading, Horizontal Shear, Rotation, Stiffness, Friction, Chemical Resistance
Bridge Expansion Joints
- Rubber property: Hardness, Tensile Strength, Elongation, Abrasion Resistance, Aging resistance, etc
- Steel plate: Dimension, Weld Inspection，Corrosion:Mill Certification, Ultrasonic Testing
- Expansion joint Property: Movement Capability, Load-Carrying Capacity, Sealing Performance
Building seismic isolation
- Rubber property: Hardness, Tensile Strength, Elongation, Abrasion Resistance, Aging resistance, etc
- Bearing Property: Vertical Loading, Horizontal Loading, Displacement Capability, Rotation, Damping, Restoring Force, Residual Displacement, Temperature and Environmental Resistance, Bond Strength
Quality Assurance
At Shuanglin company, Quality is the heart of what we do. From meticulous raw material selection to precision manufacturing, we ensure excellence at every stage.
1. Material Inspection
We begin by rigorously inspecting steel plates, rubber, and other raw materials. Only those meeting our stringent criteria proceed to the next stage.
2. Rubber Specimen Testing
We create rubber samples, subjecting them to rigorous tests. Only when they meet our standards are they blended into the final rubber material.
3. Production Inspection
Throughout production, our products undergo size and appearance checks to guarantee a flawless finish. We leave no room for imperfections.
4. Continuous Sampling
We conduct random sampling during production. If any issues arise, immediate corrections are made, ensuring consistency in quality.
5. Final Product Testing
After production, we perform thorough sampling on the final batch. Each product is meticulously examined, and inspection reports are generated.
CERTIFICATION
ISO 9001:2015
ISO 14001
ISO 45001:2018
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