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Volume-II of IV - GAIL

Volume-II of IV - GAIL

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MECON LIMITED<br />

REGD. OFF: RANCHI (BIHAR)<br />

PROCESS & PIPING<br />

DESIGN SECTION<br />

NEW DELHI<br />

TITLE PIPING FABRICATION AND<br />

ERECTION<br />

Class :<br />

Material Specification :<br />

STANDARD SPECIFICATION<br />

SPECIFICATION NO. PAGE 39 OF 62<br />

MEC/S/05/62/6 REVISION 0<br />

WELDING SPECIFICATION CHART EXHIBIT-G<br />

Sheet 1 <strong>of</strong> 2<br />

Pipes : API 5L Gr. X 60, API 5L Gr. B APIS Gr. X 42<br />

Fittings : A 105, A234 Gr. WPB. MSS-SP-75, Gr. WPHY42, MSS-S<br />

Flanges : Alos, MSS-SP-44 Gr. F42, MSS-SP as Gr. WPH 60<br />

Other : 44 Gr. F6C<br />

Base Metal <strong>of</strong> NCL :<br />

Welding Processes : Groove Joints : Butt<br />

Root Pass SMAW Filler Pass SMAW Root Pass SMAW Filler Pass SMAW Filler Joints/<br />

Socket Joints : SMAW<br />

Welding Materials : Groove Joints : Butt<br />

Root Pass E6010G/ E7010G Filler Pass F7010G/ E8010G/ E8818G<br />

Root Pass E7010/ E7018G/ E8018G Filler Pass F7016/ E7018G/ E80118G<br />

Filler Joints/ Socket Joints : E7016/ E7018/ E7018G/ E8018G<br />

Backing Page Consumable :<br />

Gases : Purging Sheilding<br />

Gas Composition : Purging Sheilding<br />

Preheating : 10 min for all welds, 100°C Post heating

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