Procedure for Pressure Test or Hydrotest

Hydrotest Procedure Scope : This Procedure is applicable to Boiler External piping and Pressure vessels constructed to ASME Code B31.1 & sec VII Div 1. Respectively. It also applies to pressure retaining items repair or altered in accordance & the National Code (NBIC)

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General Notes for Fabrication of Pressure Vessels

Code of Construction of pressure vessels should be noted on Mechanical Datasheet of Drawing. Latest applicable Code of Construction Shall be made in all aspects.Design and fabrication drawing should be approved by the client before starting of fabrication of pressure vessels
Thickness Indicated on fabrication Drawing hall be minimum thickness and shall be achieved after fabrication or Machining

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Pressure Vessels Fabrication
steel pipes

Basics of Pipes


It is cylindrical conduit or tube used to transfer fluids (e.g: liquid,gas ) or solids ( e.g: Powder, Pellets ) or semis solids ( e.g: Crude Oil ) under pressure from one point to another point.

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ASME CODES FOR PIPING : ASME B31 was earlier known as ANSI B31. The B31 Code for Pressure Piping, covers Power Piping, Fuel Gas Piping, Process Piping, Pipeline Transportation Systems for Liquid Hydrocarbons and Other Liquids, Refrigeration Piping and Heat Transfer Components and Building Services Piping.

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Procedure for Liquid Penetrate Test

SCOPE : To detect and evaluate the discontinuities open to the surface for wrought, forged materials and weldments of various size and shapes as required by construction drawing, by penetrate technique using be Solvent Removable Visible Color Contrast penetrate and non aqueous developer.

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General Fabrication

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LetsFab is Team of Working Professionals in the Field of Fabrication. We are Continiously Working To Digitize Fabrication Techniques. We had Developed many Digital Product such as eBooks, Video Courses, Excel Utilities, Android Mobile Applications, iOS Mobile Applications and Software that can be used in daily activity of fabrication Engineer with simple, efficient and faster-way.

We at LetsFab provide education to enhance knowledge and skills in the field of Fabrication of Process Equipment’s Such as Pressure Vessels, Heat Ex-changer, Storage Tanks, Agitator/Mixers, Piping, Structures, Conveying Equipment’s and other Heavy Equipment’s. LetsFab provide Education by writing blogs, providing video courses and by providing various digital tools in fabrication. If you want to learn more about courses offered by LestFab then Click here.