welding procedure for pipes

8/13/2019 Welding Procedure for pipes

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WELDING PROCEDURE SPECIFICATION

NO. 1/8-32-1

FOR

GAS TUNGSTEN ARC WELDING (GTAW)

AND

SHIELDED METAL ARC WELDING (SMAW)

OF

CARBON STEEL PIPE WITH STAINLESS STEEL CLADDING

USING ER317L and E317L-15 or -16 FILLER METALS

THIS DOCUMENT IS THE PROPERTY OF

_______________________________

(Company)

Jointly Developed With The NATIONAL CERTIFIED PIPE WELDING BUREAU

1385 Piccard Drive

Rockville, MD 20850



This Welding Procedure Specification (WPS) and supporting Procedure Qualification record(s)

(PQR) are the property of the National Certified Pipe Welding Bureau. They are issued for

adoption by members only and are to be returned to the Bureau upon termination of

membership

ANSI American National Standards Institute

ASME American Society of Mechanical Engineers

AWS American Welding Society, Inc.

REPRODUCTION AND USE OF THIS WPS AND SUPPORTING PQR(S) BY OTHER THAN

MEMBERS OF THE BUREAU IS UNAUTHORIZED

© 2005-Copyrighted in the United States and Canada by the National Certified Pipe Welding Bureau

Jointly Developed with the

National Certified Pipe Welding Bureau

1385 Piccard Drive

Rockville, MD 20850-4340



Base Metals (QW-403)

P/S Number 1 clad with 8 Group No.1 and 2

to P/S Number 1 clad with 8 Group No.1 and 2

(written for P-1 pipe lined with P-8 clad)

Base Metal Thickness Range

Groove Welds: 3/16 to 1.1 in*.

Fillet welds: Not permitted

Minimum Outside Diameter

Groove Welds: All GTAW, 1” SMAW

Fillet Welds: Not permitted

*includes cladding thickness of 10% up to 0.10”

Filler Metals and Electrodes (QW-404) Root and Fill Fill

Specification Number: SFA 5.9* SFA5.5

AWS Classification: ER317L E317L-15 or

F-number: 6 5

A-Number: N/A N/A

Maximum Weld Metal Thickness:

Grooves: 0.40” 0.70”

Fillets: None None

Maximum Bead thickness: 1/8” 1/8”

Supplemental Filler Metal: N/A N/A

Consumable Insert: Optional* N/APulsed Power Supply: Optional Not permitte

Penetration-enhancing Flux: Not Permitted N/A

* Consumable Inserts conforming SFA5.30 Class 3, Classification IN317

may also be used.

Welding Procedure Specification (WPS)

Joints (QW-402)

Joint Design: Single V, U or J shown on the other side and repairs, build-up

Backing: Optional for GTAW, Required for SMAW Backing or Retainer type: Non

Member Company Name:

WPS Number 1/8-32-1 (clad pipe) Revision 1 Date issued: 11-13-0

Welding Process: Manual GTAW and SMAW Supporting PQRs: 040

Preheat (QW-406)

Minimum metal temp.: 50° F

Interpass Temp.(Max): 350° F

Preheat Maintenance: None.

Gas (QW-408)

Shielding Gas: Argon, 30 to 40 CFH

Backing Gas: Argon, 15 to 40 CFH

Trailing Shield: None

Positions (QW-405)

Positions permitted: All

Progression when in Vertical: Uphill

Postweld Heat Treatment (QW-407)

Temperature: None

Min. Holding Time: N/A

Weld Electrode or Filler Current Travel Speed* Other

Layer Process Class Diameter Type Polarity Volts Current (a) (ipm)

Root GTAW ER317L 3/32, 1/8 DC EN (str.) N/A 70 to 115 1 to 2 Higher amperage

Fill GTAW ER317L 1/8, 5/32 DC EN (str.) N/A 100 to160 2 to 4 permitted when

insert is used

Fill SMAW E317L-15 3/32 DC EP (rev.) N/A 70 to 90 2 to 4

SMAW or 1/8 DC EP (rev.) N/A 80 to 110 2 to 4 *Values are

SMAW E317L-16 5/32 DC EP (rev.) N/A 120 to 160 2 to 6 recommended on

Technique (QW-410)

Tungsten Size and Type: 3/32, 1/8 EWTh-2,EWLa or EWCe Initial Cleaning: Remove grease or oil with solvent.

Shielding Gas Cup Size: #4 (1/4” ID) to #12 (3/4” ID) Remove cutting oxide by grinding.Single or Multiple Pass per Side: Multiple Interpass Cleaning: Remove slag with slag hammer, grinder or

Single or Multiple electrodes: Single wire brush.

Contact-tube-to-work distance (stickout): N/A Peening: Not permitted

Backgouging: Grinding or carbon arc followed by grinding Other: Keep weld beads slightly convex to avoid cracking.

Repair Method: Grinding. Backwelding is permitted.

Stringer or Weave Bead: Either, but keep any weave small.

The undersigned contractor, a member of the National Certified Pipe welding Bureau, hereby adopts this jointly developed procedure as its

Welding Procedure Specification (WPS) and certifies that this procedure has been qualified as shown on the attached Procedure Qualification

Records (PQRs).

Company:

B : Date: NCPWB W-482/5-02 WPS 1/8-32-

Electrical Characteristics (QW-409) and Related Matters



Joint Designs for Joining Internally Clad Piping by WeldingPreferred Weld End Preparation and Fit-up

30 to 45° Typ

R=1/8 min

3/32 to1/8”1/16 in max 1/16 to 3/32”

33 to 45° Typ

R=1/8 min

0 to 1/32”clearance1/16 in max

P-1 Pipe

Wall

P-8

Cladding

1/16 to 3/32”

Open Root Adding ER317L

Filler MetalClass 3 Consumable Insert meeting

IN317L analysis

Secondary Weld End Preparation and Fit-up

Third Possible Weld End Preparation and Fit-up

3/32 in Max

30 to 45°

0 to 1/32”clearance

P-1 Pipe

Wall

P-8

Cladding

Class 3 Consumable Insert meeting

IN317L analysis

3/32 to 1/8”

1/16 in max

30 to 45°

0 to 1/16 in

3/16”Minimum

P-1 Pipe

Wall

P-8Cladding

Tack

Step 2: fit up using blocks that are tack welded

to groove faces to hold root spacing

Step 3: Build up root faces using GTAW Step 4: Weld Root Pass



Weld Electrode or Filler Current Travel Speed Other

Layer Process Class Dia (in) Type Polarity Volts Current (a) (ipm)

Root GTAW ER317L 1/8 DC EN (str.) N/A 85 1.5 28,900 kJ/in

Fill GTAW ER317L 1/8 DC EN (str.) N/A 120 2

Fill GTAW ER317L 5/32 DC EN (str.) N/A 140 2

Fill SMAW E317L-16 1/8 DC EP (rev.) N/A 76 2.5

Fill SMAW E317L-16 1/8 DC EP (rev.) N/A 89 to 101 1.75 to 2

Procedure Qualification RecordIdentification of WPS followed during welding of test coupon: 1/8-32-2

Welding Process(es) used: GTAW followed by SMAW, Manual Date coupon was welded: 3-1-03

Base Metal Specification: SA-516-70 clad w/SA240 Type 317L to Base Metal Specification: Same

P-Number: 1, 8 Group No: 2, 1 to P-Number: 1, 8 Group No: 2,1 Plate/Pipe Diameter: NPS 10 Sch 60

Base Metal Thickness(in.): 0.5 + 0.05 clad Joint Type: Single V-groove F-Number: 6/5

Filler metal specification: SFA 5.9 / SFA 5.4 AWS Classification: ER317L/E317L-16

A-Number: 8/8 Weld Deposit Thickness(es)(in.): 0.2/0.35 Maximum Pass Thickness: 5/32, 3/16Filler metal size (in): 1/8, 5/32 GTA/ 3/32, 1/8 GTA Supplementary filler metal: N/A

Preheat temperature (ºF): 75 Interpass temperature (ºF) 350 Welding position/progression: 5G Uphill

Current Type and polarity: DCEN/DCEP Travel speed (ipm): see below

Shielding gas composition, CFH: Argon, 35 Backing gas composition, CFH: Argon, 45 CFH

Tungsten size/type: 1/8”, EWTh-2 GMAW transfer mode: N/A

Postweld Heat treatment (ºF): None Postweld heat treatment time (hr.): N/A

Stringer/Weave bead: Both Oscillation: N/A

Single/Multi-pass: Multiple Single/Multi-electrode: Single

Other:

Reduced Section Tensile Tests X Rectangular Turned Full Section

Bend Tests Transverse Face and Root x Side Longitudinal Face and Root

Specimen Width/Dia (in.) Thickness (in) Area (sq in.) Ultimate load (lb.) Ultimate Stress (psi) Failure Location

1 0.542 0.4989 0.270 22,762 84,300 Base Metal, Ductile

2 0.519 0.5327 0.276 23,164 83,900 Base Metal, Ductile

Type Results Type Results

Side Acceptable Side Acceptable

Side Acceptable Side Acceptable

Toughness Tests Charpy Specimen Size Test TemperatureSpecimen Notch Location Ft. Lb. Lateral Expansion (mils) Percent Shear Drop Weight Break No Break

1

2

3Weld deposit analysis: SMAW Weld, C:0.06, Mn:0.96, Si:0.38, Ni:22.79, Cr: 14.89, Mo:3.67, Cu:0.24, Nb:0.76, Ti:0.05

Other tests: HRB: CS BM 81, 81, 82. CS HAZ: 86, 85, 84. SS BM: 81, 80, 84. SS HAZ: 85, 85, 90. WM: 91, 90, 90, 90, 91, 94

Welder’s name: Dave Hintz Stamp: H2294 Welding Witnessed by: Paul Robertson, J. H. Robertson Co

Tests conducted by: Kish, C. J. Latropulos, PE, #38489 Laboratory test number: 1032019/20098

We hereby certify that the statements in this record are correct and that the test welds were prepared, welded and tested in accordanc

with the requirements of Section IX of the ASME Code.

National Certified Company:

Pipe Welding Bureau

Chairman, Technical Committee PQR Number 04016

By: Date:

welding procedure for pipes

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