Stainless Steel Handrail Work Procedure
The Stainless steel railing pipes, hardware’s & accessories of specified grade are supplied by our trusted vendors and are installed at the site as per pre mentioned specifications or as per BOQ, drawings and approved by the Engineer-in-Charge.
The material properties of stainless steel pipes and accessories should be conforming to SS 304 grade.
Stainless Steel Works
The stainless steel pipes shall at all times procured from the approved manufacturer and of an approved grade. The quality of stainless steel sheet and pipe are to be of a grade approved by Client/Consultant before proceeding with execution any item of work.
The pipe used for handrail shall be of a minimum of 16 gauge thickness.
The welded links are to be ground and organ buffed to get the original finish of the surface of the material welded.
The joints or junctions where two pieces are joined/welded to be precisely cut and then welded.
The surface finish of all the stainless steel materials will be Satin / Glossy finish free from all marks and blemishes.
The execution of work shall be carried out at site respectively as per the BOQ and drawings.
Stainless Steel Accessories
Fixing will be done by stainless steel bolts and joining shall be with SS connectors of an approved type, size and make as per the direction of Engineer-in-charge and welding to be done by using organ welding rods and the surface being duly finished and cleaned by K2 passivation.
Which is nitric acid plus fluoric acid solution treatment by which the chances of corrosion will be eliminated and any burn out makes on the metal will also be eliminated.
Protective coating and warning markings shall remain undisturbed until final acceptance. Immediately prior to final inspection, temporary protective covering or coating shall be removed and surfaces shall be washed with a suitable thinner and left in a finished condition having approved uniform appearance and free from all marks and blemishes.
Fabrication & Tolerances
Unless otherwise shown on the drawing, the fabricating tolerances shall generally be as follows:
Straightness: Compression members shall not deviate from straightness by more than 1/1000 of the axial length between points, which are to be laterally supported.
Completed members shall be free from twist bends and open joints. Sharpe links or bends shall be cause for rejection of material.
Length: of 1mm is permissible in the overall length of members with parts of the structure, shall have a variation for the detailed length not greater than 2mm for members 10 meters or less in length and not greater than 3mm for members over 10 meters in length.
Railing shall be measured in running meter and shall be correct to a cm & Rates shall be inclusive of all stainless steel pipes and fittings required vertically or horizontally per running meter of the composite section of railing including all stainless steel components complete as per the BOQ as required.
The rate shall include the cost of all materials like Stainless Steel Pipes, Stainless steel fitting & accessories, other fixing material, T & P, scaffolding and labour involved in all the operations described above including fixing/installation, Transportation, lead & lift and all taxes as applicable.