B3-CV22A ptions see page onwards Shaft variant designed Bevel-helical gearboxes B3

Flender/Flender Gear Units/Bevel-helical gearboxes B3

Piping Material Specification" for the "Pipe Class" specified for that system. To ensure the above requirement, all piping material su pplied by the Owner / Contractor shall have proper identification marks as per relevant standards / MECONs specifications / Licensors specification. Contractor shall prov ide identification marks on left over pipe lengths wherever marked up pipe lengths have been fabricat ed / erected. Material traceability is to be maintained for AS., .., NACE, LTCS, material for Hydrogen service and other exotic materials by way of transferring heat number, etc. (hard punching) as per approved procedure. This shall be in addition to colour coding for all piping materials to avoid mix-up. 4.2 4.2.1 All fabrication shall be carried out in accordance with piping general arrangement drawings, (prepared by CONTRACTOR and approved by COMPANY) including this specification and codes as specified in section 2.0. 4.2.2 CONTRACTOR shall be responsible for working to the exact imensions as per the approved drawings. Dimensional tolerances to be adopted during implement ation of fabrication work shall be as per attached sketch "TOLERANCES FOR FABRICATION". 4.2.3 Flange bolt holes shall generally straddle the established centre lines unless other orientation is required and as called out in approved drawings. 4.2.4 Threading shall be NPT to ANSI 1.2.1. Threading shall referably be done after bending, forging or heat treatment operation. However if it is not possi ble, precaution shall be taken to protect threading against deformation. Thread shall be clean cut with no burrs or stripping. Dies shall be new, sharp and properly designed for piping mater ial. Ends shall be reamed to remove burrs. 1 of 1 STANDARD TECHNICAL SPECIFICATION MECON LIMITED REGD. OFF: RANCHI 8 OIL & GAS SBU, DELHI DOCUMENT NO. Page 5 of 6 TITLE MEC//0/2/0 REVISION : 0 PIPING FABRICATION AND ERECTION EDITION : 1 4.2.5 All threaded joints shall be aligned