The OKI project of Sinar Mas Group in Indonesia is one of its significant investment projects aimed at constructing a world-leading pulp mill. In this large-scale project, the large-diameter rubber expansion joints produced by Shanghai Songjiang Group played a crucial role in providing reliable support for the project’s smooth implementation and efficient operation. As one of Indonesia’s largest enterprises, Sinar Mas Group has extensive industrial investments, including pulp and papermaking. The OKI project, as a strategic development project of Sinar Mas Group, aims to build the world’s most advanced pulp mill to meet the growing market demand.

Application of Songjiang Large-Diameter Rubber Expansion Joints
In the infrastructure construction of the OKI project of Sinar Mas Group in Indonesia, large-diameter rubber expansion joints play a critical role as connecting components. They are widely used at various pipeline connections to ensure the stable connection and smooth operation of the pipeline system. The following are the specific applications of large-diameter rubber expansion joints in the project:
Pipeline Connections: Large-diameter rubber expansion joints are used to connect different pipelines in various production processes of the pulp mill, including raw material transportation, chemical treatment, and finished product transportation. They ensure the sealing and firm connection between pipelines, preventing leaks and failures.
Vibration Absorption: Mechanical equipment in the pulp and papermaking process generates a significant amount of vibration. Large-diameter rubber expansion joints have excellent vibration absorption properties, reducing the impact of vibration on the pipeline system and extending the equipment’s lifespan.
High Adaptability: Due to the complex and changeable operating environment of the pulp mill, pipeline systems often face temperature changes and displacements caused by mechanical motion. Large-diameter rubber expansion joints have good flexibility and adaptability to effectively cope with these changes and maintain the stability of the pipeline system.
Corrosion Resistance: The chemical treatment process of the pulp mill may produce corrosive substances. Large-diameter rubber expansion joints made of corrosion-resistant materials can resist the erosion of chemicals and ensure long-term stable operation.
Advantages of Large-Diameter Rubber Expansion Joints
In the OKI project of Sinar Mas Group in Indonesia, the advantages of large-diameter rubber expansion joints are fully demonstrated:
High Elasticity: Rubber materials have excellent elasticity, capable of absorbing shocks and vibrations generated during operation, reducing the risk of pipeline system damage.
Reliable Sealing: Large-diameter rubber expansion joints made of high-quality rubber materials have excellent sealing performance, ensuring the sealing of the pipeline system and preventing leaks.
Corrosion Resistance: Large-diameter rubber expansion joints made of corrosion-resistant materials can resist the erosion of chemicals and corrosive media, maintaining long-term stable operation.
Feedback After Project Completion
After the completion of the OKI project of Sinar Mas Group in Indonesia, the application effect of large-diameter rubber expansion joints has been fully verified. The pipeline system operates stably without leaks or failures, providing reliable guarantee for the normal production of the pulp mill. Sinar Mas Group is satisfied with the large-diameter rubber expansion joints provided by Shanghai Songjiang Group and expresses willingness to continue cooperation to promote the project’s development.
This collaboration reflects the importance and role of large-diameter rubber expansion joints produced by Shanghai Songjiang Group in the OKI project of Sinar Mas Group in Indonesia, as well as the extensive application prospects of Songjiang products in the industrial field. Shanghai Songjiang Group will continue to provide high-quality rubber expansion joint products, contributing to the smooth implementation and sustainable development of industrial projects worldwide.



