VISVKARMA INDUSTRIES

Mahesana, Gujarat

overview

vistar enterprise has the expertise to thermally and mechanically design and fabricate shell and tube heat exchangers as per the customer-supplied process data and mechanical and metallurgical requirements for the refining, petrochemical, and gas processing industries. we offer design and fabrication of heat exchangers in accordance with asme & tema standards.

our streamlined design process for the heat exchangers relies on a combination of advanced modeling and analysis software, and hundreds of man-years of experience. with extensive design and manufacturing capabilities, exchangers and products transition smoothly from design, through prototyping to production.

shell and tube heat exchanger

• shell and tube design is one of the most common types of exchangers used in heat transfer.

design capability

• vistar enterprise provides new designs with full thermal design or can check the customer-provided designs and fabricate as per industrial requirements.
• we provide a complete solution in the design and fabrication of shell and tube-type heat exchangers.
• designs are made using licensed software from htri for thermal design sizing and pv-elite for mechanical strength calculation.
• our design consultant utilizes htri thermal and vibration software for rating/sizing of heat exchangers as we

fabrication

• our manufacturing facility is capable of fabricating either on a routine or on an emergency basis, shell and tube heat exchangers, replacement of tube bundles, shells, shell covers, floating heads, covers, gaskets, etc.
• tubular exchangers manufacturers association (tema) sized exchangers made from carbon steel, alloy steel, stainless steel, and any other materials as required by customers.

testing

• whether testing to low or high pressures, we can comply with customers hydro test requirements by deploying appropriate test equipment.

repair

• with our world-class engineering, design, machining, and welding technology, we can repair or replace any heat exchanger component.
• all types of materials, we can machine it, build it, weld it, repair it or replace it.

OVERVIEW

Vistar Enterprise is well experienced in design, analysis and re-rating of storage tanks used in refineries, chemical plants, power plants, nuclear plants, and other processing facilities. State-of-the-art equipment is in use everywhere at the Vistar Enterprise factory. Capabilities range from automatic welding machines capable of performing multiple welding processes to fully qualified and trained welders.

Precise cuts are controlled through the use of Computer Numerical Controlled burning tables and precise welding control is achieved with automated welding equipment. Even continuous or intermittent stitch welds on fillet joints are controlled through the use of automated welding machines.

DESIGN CAPABILITIES

• Our success is attributed to our exceptionally service-oriented staff who are dedicated to providing quality products and efficient service with a second to none safety program.
• Some of the capabilities of Vistar Enterprise in the area of storage tanks are design, analysis and rerating of large Storage Tanks and low pressure Storage Tanks, Maximum fill height calculation, Fitness-for-service evaluations, Calculations and recommendations for repairs, alterations or replacement of existing storage tanks and storage tank components.

FABRICATION

• We have a full-fledged facility for fabrication and production of all bottom tank plates, annular plates and roof plates, structure, nozzles, appurtenances, ladders, platforms, etc prior to transportation and installation.

TESTING

• Complementing the full range of welding capabilities is a complete range of non-destructive examination capabilities outsourced from reputed NDT companies.
• Weld examinations can include visual, liquid Penetrant, magnetic particle, and radiography to provide high-quality construction without concern of possible rework.

ERECTION

• We have a dedicated team of engineers who are specialized in the erection of huge diameter tanks from soil investigation, the civil foundation works, installation and erection of tank inclusive of piping work, related electrical and instrumentation work, painting and epoxy coating, etc.

REPAIR

• Vistar Enterprise Provides tank repair and maintenance services, including bottom plate replacements, shell repairs, fixed and floating roof repairs and replacements, tank re-leveling, fittings and appurtenances, special design and engineering work, as well specialty fabrication and construction project work.

OVERVIEW

Vistar Enterprise manufactures a wide range of pressure vessels, each custom built to fulfill code and clients individual requirements for both onshore and offshore use. Our approach to the engineering of pressure vessels is solution-based, drawing on our extensive experience in process engineering.

Pressure Vessels have been produced with different types of materials like Carbon Steel, Stainless Steels (including Duplex alloys), Nickel & Nickel Alloys (including Hastelloy, Inconel, Monel), and Cladding of specified materials.

We have the expertise and necessary infrastructure to manufacture pressure vessels of various types such as:

• Reactor Vessels
• Columns / Evaporators
• Filters / Separators
• Surge & Knock Out Vessels

DESIGN CAPABILITIES

• We can provide complete design and analysis of pressure vessels including Div. 2 design and stress reports, fatigue analysis, pipe stress analysis, and finite element analysis either in-house or by engaging reputed design consultants.
• Conceptual design and process data provided by the Customer are detailed using PV Elite software and the shop drawings/design calculations are developed to ensure that all code requirements are met. Design for vessel internals (tube sheets etc) is also developed to suit customer requirements.

FABRICATION

• Whether your projects are large or small, we welcome the challenge of your fabrication needs. From flame-cutting, plate rolling, welding, heat treating, machining, assembly, hydro testing to protective coatings, our full line capabilities ensure that any specific fabrication requirements of individual customers are met time and again.
• Four (4) pyramid and pinch plate rolls can roll plates up to 40 mm thick and 3 Mtr width.
• We deploy all the latest and advanced welding techniques including SMAW, GMAW, FCAW, GTAW & Submerged Arc Welding.
• Heat Treatment of pressure vessels is arranged by engaging third-party agencies at our shop site.?

TESTING

• We have an independent quality team to implement pre-agreed hold points as well as initiate the in-process and final inspections so that all requirements of the code are met or exceeded.
• We engage reputed third-party inspection companies to provide the NDT services.

REPAIR

• We have a dedicated and experienced team for carrying out inspection as well as repair of existing pressure vessels at field locations.
• Re-conditioning works on in-service equipment can also be executed by implementing customized solutions.

OVERVIEW

Vistar Enterprise is well experienced in design, analysis and re-rating of storage tanks used in refineries, chemical plants, power plants, nuclear plants, and other processing facilities. State-of-the-art equipment is in use everywhere at the Vistar Enterprise factory. Capabilities range from automatic welding machines capable of performing multiple welding processes to fully qualified and trained welders.

Precise cuts are controlled through the use of Computer Numerical Controlled burning tables and precise welding control is achieved with automated welding equipment. Even continuous or intermittent stitch welds on fillet joints are controlled through the use of automated welding machines.

DESIGN CAPABILITIES

• Our success is attributed to our exceptionally service-oriented staff who are dedicated to providing quality products and efficient service with a second to none safety program.
• Some of the capabilities of Vistar Enterprise in the area of storage tanks are design, analysis and rerating of large Storage Tanks and low pressure Storage Tanks, Maximum fill height calculation, Fitness-for-service evaluations, Calculations and recommendations for repairs, alterations or replacement of existing storage tanks and storage tank components.

FABRICATION

• We have a full-fledged facility for fabrication and production of all bottom tank plates, annular plates and roof plates, structure, nozzles, appurtenances, ladders, platforms, etc prior to transportation and installation.

TESTING

• Complementing the full range of welding capabilities is a complete range of non-destructive examination capabilities outsourced from reputed NDT companies.
• Weld examinations can include visual, liquid Penetrant, magnetic particle, and radiography to provide high-quality construction without concern of possible rework.

ERECTION

• We have a dedicated team of engineers who are specialized in the erection of huge diameter tanks from soil investigation, the civil foundation works, installation and erection of tank inclusive of piping work, related electrical and instrumentation work, painting and epoxy coating, etc.

REPAIR

• Vistar Enterprise Provides tank repair and maintenance services, including bottom plate replacements, shell repairs, fixed and floating roof repairs and replacements, tank re-leveling, fittings and appurtenances, special design and engineering work, as well specialty fabrication and construction project work.