Seamless Fluoropolymer Linings offer Sustainable Solution to Resist Corrosion
Narendra Thakkar
Expert - Fluoropolymers
Corrosion Management

Increasing domestic demand along with growing export from India brings lot of new capital investment in India to hit USD 300 billion mark in next 6-7 years for building new chemical plants which requires large amount of investment in fixed capital and process equipment. Author shares the Challenges and Solutions in Chemical industry for PTFE Lined Columns & Tanks for Corrosion management.

India has large chemical industry in Asia pacific with a steady growth rate of 7-9 % in Chemicals, pharmaceuticals and specialty Chemicals with overall market size of more than USD 150 Billion makes India 6th largest chemical manufacturer in the world. Larger domestic demand along with growing export from India brings lot of new capital investment in India to hit USD 300 billion mark in next 6-7 years for building new Chemical plants which requires large amount of investment in fixed capital and process equipment.

Growth comes along with multiple challenges including key raw material availability, new technologies, digitization, safety concerns and equipment compatibility to handle corrosive & hazardous chemicals at optimized cost. There are multiple solutions to corrosion mitigation practiced in chemical industry & every solution has its own pros and cons. Fluoropolymers like PTFE, PFA, and PVDF etc. as barrier lining material (3mm to 12 mm thick) have been used in chemical process equipment lining for corrosion management since more than 50 years. Key applications include Fluoropolymers Lined Pipes, Fittings, Valves, Pumps, Columns and Tanks etc. whereas premature failure lead to increased downtime and production losses.


36 inch dia. PTFE lined equipment for corrosive chemical handling.

As of now there are handful of quality Fluoropolymers lined equipment Seamless Fluoropolymer Linings offer Sustainable Solution to Resist Corrosion Increasing domestic demand along with growing export from India brings lot of new capital investment in India to hit USD 300 billion mark in next 6-7 years for building new chemical plants which requires large amount of investment in fixed capital and process equipment. Author shares the Challenges and Solutions in Chemical industry for PTFE Lined Columns & Tanks for Corrosion management. manufacturers in India but the number is gradually increasing. In the last decade the industry has taken cognizance from the challenges in fluoropolymer lined process equipment and the key value chain players have taken corrective actions to upgrade overall performance of these equipment. These efforts have given much needed impetus and positive drive as well as helped equipment manufacturers to understand tough challenges and offer innovative solutions to the customers. This includes new manufacturing technologies for larger seamless PTFE liner manufacturing > 400 NB to 2000 NB (16 inch to 80 inch) for heavy process equipment’s like columns, vessels, scrubbers etc. This is a very proud moment for the industry to realize the Make in India initiative by developing substitutes with high quality Fluoropolymers lined equipment's at reasonable cost & minimum delivery time thus reducing dependence on imports.

Resistotech Industries Pvt. Ltd is one of the leading Indian players in this domain and achieved significant milestones in producing Fluoropolymers lined equipment. The company has state of the art manufacturing facility spread across 3600sq. feet near Nashik to produce Fluoropolymers like PTFE, PFA, PVDF Processing and Mining. Delamination is one of the challenges in the long run that one needs to consider while using welded PTFE sheet lining process, which is not the case with seamless fluoropolymer lined equipment.

Directors of company, Mr. Prashant Patil and Mr. Vaibhav Naphade have 20 years of experience in Fluoropolymers processing and Mining for pipes, Fittings and large diameter equipment's for full vacuum applications for aggressive corrosive media handling. Under the guidance of the Managing Director of Resistotech, they have accepted toughest challenges in chemical industry and after 10 months of continuous trials and developments efforts successfully developed India's largest diameter seamless extruded PTFE Liner up to 900 NB (36 inch/900 mm dia) & 6 meter length. 900 NB PTFE Liner has been successfully lined inside mild steel tanks for handling corrosive chemicals under partial vaccum conditions. Currently it is installed and working absolutely satisfactory at one of the leading specialty chemical manufacturer in India. This successful case has built significant confidence for Resistotech and helped them to showcase their success case at many chemical manufactures in India and overseas.

The company has installed many installations with 400 NB(16 inch/400 mm dia) under partial to full vaccum condition at elevated temprature range at 120-180 degree Celcius.

Mr. Prashant Patil proudly mentions that they are eďtremely delighted with this differentiated achievement through proprietary technology and started receiving firmed orders from many reputed local and international process equipment manufacturers, end users and engineering consultants for larger diameter seamless PTFE lined columns, vessels and equipment. He elaborates that there are 30 different parameters that need to be controlled for larger diameter PTFE Liners and 10 of them are most critical to get desired level of quality performance as per international quality standards like ASTM F1445 for PTFE lined products. Even bigger sizes like 1200 NB(1200 mm) to 2000 NB(2000 mm) diameter liners are also in pipeline of development to use for large sized Tanks and Column seamless lining.

esistotech has continued to gain lot of appreciation from end customers  engineering consultants to address their application specific needs and has become one of the preferred partners for development and supply of complicated  tailor made quality Fluoropolymers ined products in India. Through differentiated and unique offerings, ompany has achieved ecellent growth in last  years with  of more than   which is remarkable and planned to grow aggressively in coming  years with significant investment in new facility for production, development and uality ontrol for lined equipments near ashik. esistotech plans to epand the global footprint and scouting for partners in the Middle ast   to spread the technological advancement for larger benefit of chemical industry in corrosion management solutions. The company is currently focused on comple challenges due to aggressive chemical handling under full  partial vacuum systems in industries like aper  ulp, pecialty hemicals and Fluorochemicals, efineries, harma I, hloroalkali, teel processing, ickling, grochemical  pesticides manufacturers to find alternative solutions to epensive import substitutes  eotic metals like Titanium, Tantalum and astelloy for selective process equipments within range of Fluoropolymers.esistotech has continued to gain lot of appreciation from end customers  engineering consultants to address their application specific needs and has become one of the preferred partners for development and supply of complicated  tailor made quality Fluoropolymers ined products in India. Through differentiated and unique offerings, ompany has achieved ecellent growth in last  years with  of more than   which is remarkable and planned to grow aggressively in coming  years with significant investment in new facility for production, development and uality ontrol for lined equipments near ashik. esistotech plans to epand the global footprint and scouting for partners in the Middle ast   to spread the technological advancement for larger benefit of chemical industry in corrosion management solutions. The company is currently focused on comple challenges due to aggressive chemical handling under full  partial vacuum systems in industries like aper  ulp, pecialty hemicals and Fluorochemicals, efineries, harma I, hloroalkali, teel processing, ickling, grochemical  pesticides manufacturers to find alternative solutions to epensive import substitutes  eotic metals like Titanium, Tantalum and astelloy for selective process equipments within range of Fluoropolymers.