cswip 3.2.2 specification book pdf free download

‘CRYO’ shall be marked additionally in case ‘CRYO’ is specified in the requisition.Īll items shall be inspected and approved (stagewise) by GAIL inspector or any other agency authorised by GAIL. Jack screw end shall be rounded.Įach size of studs & rn/c bolts with nuts and jack screws shall be supplied in separate containers marked with size and material specifications. Heads of jack screws and m/c bolts shall be heavy hexagonal type. The nuts shall be double chamfered, semi-finished, heavy hexagonal type and shall be made by the hot forged process and stamped as per respective material specification. Length tolerance shall be in accordance with the requirement of table F2 of Annexure-F of ANSI B 16.5. Stud bolts shall be threaded full length with two heavy hexagonal nuts. 1.12 with class 2A fit for studs, M/c bolts and jack screws and class 2B fit for nuts.

Threads shall be unified (UNC for 1” dia and 8UN for > 1” dia) as per ANSI B.

(Heat Analysis, Product Analysis and Mechanical Requirement)Īll bolting shall be as per ANSI B 18.2.1 for studs, M/c bolts and jack screws and ANSI B 18.2.2 for nuts. Material test certificate shall also be furnished. Test reports shall be supplied for all mandatory tests as per the relevant material specifications. The applicable identification symbol in accordance with the material specification shall be stamped on each bolt and nut. Deviation (s), if any, shall be clearly highlighted in the quotation.

The process of manufacture, heat treatment, chemical and mechanical requirements and marking for all stud bolts, m/c bolts, jack screws and nuts shall be in accordance with the codes/standards and specifications given in the requisition. TECHNICAL NOTES FOR BOLTS, NUTS & GASKETS TECHNICAL NOTES FOR BOLTS, NUTS AND GASKETS (PIPING)

Cswip 3.2.2 specification book pdf free download