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WPS Bhel

This document provides a welding procedure specification for fillet and socket welding of 18Cr8Nri stainless steel tubes and pipes using shielded metal arc welding (SMAW) without post-weld heat treatment. It specifies the joint design, base metal details, filler metal, welding positions, preheat requirements, electrical characteristics, welding techniques, and current/polarity details for the root, filler, and cap passes. The welding will be done using E347 filler wire in the 2.5-4.0 mm size range with direct current of electrode positive polarity and 70-150 amps depending on the wire size.

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984 views2 pages

WPS Bhel

This document provides a welding procedure specification for fillet and socket welding of 18Cr8Nri stainless steel tubes and pipes using shielded metal arc welding (SMAW) without post-weld heat treatment. It specifies the joint design, base metal details, filler metal, welding positions, preheat requirements, electrical characteristics, welding techniques, and current/polarity details for the root, filler, and cap passes. The welding will be done using E347 filler wire in the 2.5-4.0 mm size range with direct current of electrode positive polarity and 70-150 amps depending on the wire size.

Uploaded by

pradhankruhsna
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
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Download as PDF, TXT or read online on Scribd
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BHARAT HEAVY ELECTRICALS LIMITED

WELDING TECHNOLOGY CENTRE


Tiruchirappalli-620014

WELDING PROCEDURE SPECIFICATION


Form No. 101-401 Page 1 of 2
WPS No.: 1029 Date: 06.10.97 Supporting PQR No.: 570
Rev. No.: 00 Date: ------
Welding Process: SMAW Type: Manual
(Auto,Semi-Auto,Manual,Machine)
Application: Fillet & Socket welding 18Cr8Nri Stainless steel Tubes/Pipes without PWHT.

JOINTS (QW-402)
Joint Design : Fillet as per prodn. drg.
Backing (Yes/No) : Yes
Backing Material (type) : Metal
Metal/Non fusing metal/
Non metallic/Others

BASE METAL (QW-403)


P. No.: 8 Group No.: 1 to P. No.: 8 Group No.: 1
Spec. Type & Grade : N.A
Chem. Analysis & Mech. Prop : N.A
Thickness Range
Groove: N.A Fillet: Unlimited
Pipe Dia. range
Groove: Unlimited Fillet: Unlimited
Others: Nil
FILLER METALS (QW-404)
AWS No. (Class): E 347
Specn. No. (SFA): 5.4 Size of filler metal: See table
F. No.: 5 Flux Trade Names: N.A
A. No.: 8 Consumable insert: N.A
Electrode |Flux (Class): N.A.
Deposited weld metal thickness range:
Groove: N.A.
Fillet: Unlimited. (Max. 6.00 mm per pass)

POSITION (QW-405) PREHEAT (QW-406)


Position of Groove: N.A. Preheat temp (min). : Nil (Min 10oC)
Position of fillet: All. Inter pass temp. (Max.): 300 Deg. C
Weld Progression: Vertical up Pre heat maintenance: Nil
(Up / Down)
Others : Nil
BHARAT HEAVY ELECTRICALS LIMITED
WELDING TECHNOLOGY CENTRE
Tiruchirappalli-620014

WELDING PROCEDURE SPECIFICATION


Form No. 101-401 WPS No.: 1029 Page 2 of 2
PWHT (QW-407) GAS (QW-408)
Temp. Range: Nil Gases Mix% Flow Rt.
Time Range Nil Shielding N.A. --- ---
Others: Nil Trailing N.A --- ---
Backing N.A. --- ---

ELECTRICAL CHARACTERISTICS (QW-409)


Current (AC/DC): See table Polarity: See table
Amps. (Range): See table Volts: N.A
Tungsten Electrode type and size: N.A.
Mode of metal transfer for (GMAW): N.A.
Electrode wire feed speed range: N.A.
Pulsing current (GTAW): N.A.

TECHNIQUES (QW-410)
String or Weave Bead: String
Orifice or Gas cup size: N.A.
Initial and inter pass cleaning: Brushing/Chipping/Grinding
Method of back gouging: N.A.
Oscillation: N.A
Contact tube to work distance: N.A
Multiple or single pass (per side): Multiple
Multiple or single electrode: Single
Electrode spacing: N.A.
Peening: Nil
Others: Nil
Filler Current Others
Travel (hot wire,
Weld Volt
Process Dia. speed torch
Layer Class Type Amps. Range
mm range angle
etc.)
Root SMAW E 347 2.5 DCEP 70-100 N.A. N.A. Nil
Others -Do- -Do- 3.15 -Do- 80-120 N.A. N.A. Nil
---Do-- -Do- -Do- 4.00 -Do- 120-150 N.A N.A Nil

Approved by: (V.Ravindran) Prepared: (P.Sivasubramanain)


Sr.Manager /WTC Welding Engineer/WTC

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