Blog

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PVDF piping and various joining methods for acid handling applications.

Sangir extensively manufactures and supplies PVDF piping systems globally for acid handling and is an end-to-end solution provider for your demanding applications. Our installation teams have successfully executed several projects and have many hours under their belt to help you navigate through the most intricate jobs. Sangir’s engineered Kynar PVDF piping follows DVS 2207 & ASTM D3222 standards. PVDF piping can be joined by socket fusion, butt fusion, or non-contact IR fusion depending on the specifications. Read more before specifying the joining method for your next project.

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BorSafe™PE100 material diffusers for outfall pipeline of Dahej desalination plant, Gujarat, India

Gujarat has a long coastline of 1,600km, and to meet the growing need for water resources, the state has increasingly adopted desalination technology in recent years. With a capacity of 100 million liters per day, this plant will help supplement the current water supply coming from the Narmada River and a canal, with desalinated seawater. Sangir was selected to produce the diffuser for the outfall pipeline of the Dahej desalination plant. The outfall diffuser required was a massive size of 1,200mm in diameter and 44m in length, making it technically demanding to produce without sacrificing structural integrity and strength.

MEETING THE CHALLENGES OF DESALINATION BRINE DISCHARGE

Desalination produces large quantities of brine and chemicals as by-products, which need to be diluted before being discharged back into the sea, to limit the environmental impact. One such method is to mix it via a diffuser in a mixing zone at the end of an outfall pipeline. For example, once a pipeline containing the brine reaches the sea floor, it can split into many branches, each releasing brine gradually through duckbilled valves. However, diffusers made of conventional materials such as steel are extremely costly, heavy, and prone to corrosion, whilst other materials such as glass-reinforced plastic (GRP) may undermine the integrity of the diffuser assembly.

A SUSTAINABLE, RELIABLE CHOICE FOR DESALINATION OUTFALL PIPES

Sangir Plastics Pvt Ltd, a leading manufacturer of piping solutions in India, was selected to produce the diffuser for the outfall pipeline of the Dahej desalination plant. The outfall diffuser required was a massive size of 1,200mm in diameter and 44m in length, making it technically demanding to produce without sacrificing structural integrity and strength. Having used BorSafe™ HE3490-LS PE100 material successfully for 17 years in numerous intake and outfall lines projects, Sangir Plastics chose it once again for its reliability, to accomplish this rigorous task.

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HDPE Expansion loops under MTHL coastal bridge drainage system project

The Mumbai Trans Harbour Link – MTHL, which mainly spans across the coastal waters of the Arabian Sea required an innovative and hybrid drainage system under the bridge. The challenges posed by the bridge’s location involved high-risk work at great heights and over the water. The pre-planning phase involved a higher degree of engineering and technical expertise. In comparison to many other materials frequently used in piping systems, HDPE is a thermoplastic material with a greater coefficient of thermal expansion (CTE). The HDPE piping material will expand or contract in reaction to temperature variations in a piping system. 

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SanStud ® stud liner used for in Biogas Plant Domes

Specialty solution using the Stud-Liner product for the lining inside the dome of a biogas plant. Biogas Digesters made from Cement/Concrete are used for breaking down organic matter, by bio-digestion in anaerobic conditions to generate Biogas, which is a gaseous alternative fuel. The Biogas is a mixture of gases which predominantly includes Methane, Carbon Dioxide and Hydrogen Sulfide (H2S). The Concrete Dome of the Biogas plant is the place where the Biogas gets stored. However, the Hydrogen Sulfide present in the Biogas, reacts with the Lime/Calcium carbonate present in the cement surface of the dome, causing deterioration of the concrete.

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