Common use of Flanges Clause in Contracts

Flanges. Welding neck flanges conforming to IS 6392, ISO 7005-1 or BS 4504 Section 3.1 for a nominal pressure rating as required must be used in accordance to the design pressure at the place of the installation. The nominal size of flanges shall be in conformity to the equipment or pipe appurtenance with which they are to be used. The flange thickness and drilling shall conform to IS 6392, ISO 7005-1or BS4504 Section 3.1 . Flanges shall be provided at the end of pipes or special where sluice valves, blank flanges, tapers, etc., have to be introduced. The Contractor shall assemble the flanges in the exact position by marginal cutting, if necessary, so as to get the desired position of the valves, etc., either vertical or horizontal and shall then fully weld the flanges from both sides in such a way that no part of the welding protrudes beyond the face of the flanges. In case the welding protrudes beyond the flanges and if the Employer’s Representative instructs that such protrusions shall be removed, the Contractor shall file or chip them off. If required and when instructed by the Employer’s Representative, the Contractor shall provide and weld gusset stiffeners.