Pressure Vessels

Ascent undertakes design, detailed engineering, manufacture, testing, certification and code stamping of pressure vessels to ASME Sec VIII Div 1, Div 2 etc.. Pressure vessels for various applications such as air receivers, columns, reactors, towers, digesters, pig launchers - receivers etc. can be manufactured and / or repaired. Also, pressure vessels under Indian Boiler Regulations, 1950 such as boiler steam / mud drums, blow down tanks, HP Heaters, Deaerators, headers for various applications such as waterwall headers, economizer / superheater / reheater headers etc. can be manufactured and IBR stamped.

We also manufacture pressurized transportable tanks for hazardous chemicals with Code Stamp.

Ascent has a team of competent design engineers, design associates and draftsmen experienced in the field. Generally PV Elite supplemented with custom developed spread sheets is used for mechanical design and latest version of Autocad for drafting. Finite element analysis, stress analysis etc. can also be carried out by our design associates. In case process design or design of vessel internals is required, we can establish arrangements with well known European engineering companies operating from India or Europe.

Materials of construction range from carbon steel, alloy steel through stainless steel including SMO (6% Mo) and Duplex / Super Duplex Stainless Steel and exotics such as Incolloy, Hastelloy, Monel, CuNi, Titanium etc. For material preparation, we have a oxy fuel torches. We can roll shells up to 25 mm thick and 2 M wide. Cold working is maximized with band saw, Universal Steel Worker etc.

We have the entire range of welding gear viz., SAW and SMAW welding machines. We also have BugO Speed Weaver welding oscillator for GTAW / FCAW. There are also baking and holding ovens for welding electrodes and flux, apart from portable quivers for welders and welding operators. For stainless steel and exotics, there is a purpose built, segregated area.

We have a well equipped machine shop with radial drill and 3 gap bed centrelathes.We also have a magnetic drill up to 50 mm diameter and 50mm thickness. We also have a Broach cutter.

We carry out post weld heat treatment / stress relieving in temporary purpose built temporary furnaces within our facility or in gas fired furnaces at a specialist subcontractor’s premises. Semi automatic and manual FCAW is used for welding of saddles, supports and stiffeners.

Hydro testing up to 600 bar can be done with or without chart recorders. Pneumatic testing and / or helium leak testing could also be done at our workshop by 3rd party. Country specific compliance certification such as that for Malaysia, Singapore, Australia etc. can also be arranged through authorized third party inspection agencies such as Bureau Veritas. This would facilitate seamless integration of our pressure vessels into the project in the country of installation.

We have an extensive range of WPQRs to ASME Sec IX and EN ISO 15614 covering a wide range of materials, thicknesses, processes and other variables. All our WPQRs are witnessed and certified by third party inspection agencies such as Bureau Veritas, TUV Nord etc. Welders could also be qualified in presence of third party inspection agencies if it is a requirement. If Client requires us to appoint an independent third party inspection or certification agency, it could be arranged.

If rubber / PTFE / PPE lining is required for pressure vessels, these could be arranged through specialist subcontractors. Non destructive testing such as radiography, ultrasound etc. and material testing at NABL accredited testing facility is available within reach.

Management team has extensive experience in the heavy engineering industry within and outside India, especially with multi national companies, EPC global contractors, service providers etc. We have competent QC Inspectors, AWS/CSWIP 3.1/3.2 Certified Welding Inspectors, API 510 Pressure Vessel Inspectors and BGAS Grade II Painting Inspectors. In short, you are assured of a truly world class service within India. For a list of pressure vessel projects recently executed / in progress,