1 NATIONAL CERTIFIED PIPE WELDING BUREAU. WELDING PROCEDURE SPECIFICATION . NO. 8:1-3-1 . FOR. GAS TUNGSTEN ARC WELDING (GTAW). OF. AUSTENITIC STAINLESS STEEL PIPE, VALVES, FITTINGS AND FLANGES. TO. CARBON STEEL PIPE, VALVES, FITTINGS AND FLANGES. USING ER309 FILLER METAL. This document is the property of (NCPWB Member Company Name). This WELDING PROCEDURE SPECIFICATION (WPS) and PROCEDURE Qualification Record(s) (PQR). are issued by the NCPWB for adoption by its members. Reproduction or use of this WPS and PQR(s) by anyone other than members of the NCPWB is prohibited NCPWB. WELDING PROCEDURE SPECIFICATION (WPS). Company Name: WPS Number: 8: 1-3-1 Original WPS Date: 5-5-87 Supporting PQRs: 87805, 87806.
2 Revision Number: 2 Revision Date: 10/1/13. WELDING Process: Gas Tungsten Arc (GTAW) Type: Manual Joints (QW-402). Joint Design: Single-V or U, Double-V or U, Fillets, Repairs, Build-up Details: See Typical Joint Designs Backing: Optional Backing Material Type: Carbon Steel, when used Base Metals (QW-403) Filler Metals (QW-404) Root Balance P-Number: 8 Group Number: 1, 2 SPECIFICATION Number (SFA): to P-Number: 1 Group Number: 1, 2 Classification: ER309 ER309. Thickness Range F-number: 6 6. Groove Welds: 1/16 to A-Number: 8 8. Fillet Welds: All Maximum Deposited Weld Pipe Diameter Range Metal Thickness - Groove: (including root).
3 Groove Welds: Over 1 - Fillet: All All Fillet Welds: All Maximum Bead Thickness: 1/8 1/8 . Flux Trade Name: N/A N/A. Consumable Insert: None None Positions (QW-405) Postweld Heat Treatment Technique (QW-410). (QW-407). WELDING Positions: All Temp. Range: None String or Weave Bead: Either WELDING Progression: Uphill Time Range: N/A Method of Backgouging: None Preheat and Interpass Electrical Initial and Interpass Cleaning: Grind to re- Temperature (QW-406) Characteristics move cutting oxide, solvent clean to remove (QW-409) cutting oil. Grind and wire brush to remove Minimum Preheat: 50 F Current Type: DC slag deposits. Maximum Interpass: 350 F* Polarity: Straight Orifice or Gas Cup Size: #4 to #12.
4 Preheat Maintenance: Not Required Amperage: See Table Oscillation: N/A. Gas (QW-408) Electrode Feed Speed: N/A Contact Tube to Work Distance: N/A. Shielding Gas: 100% Argon Voltage: N/A Multiple or Single Pass: Either Composition: WELDING Gr. Travel Speed: See Table Multiple or Single Electrode: N/A. Flow Rate: 8-20 CFH Tungsten Type: 2% Thoria Peening: Not Permitted Gas Backing: Ar, 5-15 CFH Tungsten Size: 3/32,1/8 Other: Tracking Shield: None Pulsed Current: None Use 3/32 tungsten on Schedule 5 to 10 pipe Filler Metal Current Travel Other Weld WELDING Type/ Volts Speed *. Layer Process Class Dia. (in) Amps Polarity (ipm).
5 1(S5, 10) GTAW(3/32) As Above 3/32 or 1/8 DCSP 40-60 2-4. 1(S40+) GTAW As Above 3/32 or 1/8 DCSP 70-100 2-5. Fill and GTAW As Above 3/32 DCSP 70-170 2-6 *These values are recommended Fillets GTAW As Above 1/8 DCSP 70-200 2-8 only, not mandatory The undersigned contractor, a member of the National Certified Pipe WELDING Bureau, hereby adopts this jointly developed PROCEDURE as its company WELDING PROCEDURE SPECIFICATION and certifies that this PROCEDURE has been qualified as shown on the attached PROCEDURE Qualification Record. Contractor: By: Date: Title: NCPWB Form QW-482 4/87 WPS 8:1-3-1 . For use by NCPWB members only ( NCPWB).
6 Typical Joint Designs Other joint designs shown on Engineering drawings supersede these joint details Butt welds 30 to 45 30 to 45 . 3/32 to 1/8 3/32 to 1/8 . See note 1. See Note 1 3/16 Nom. 3/32 to 1/8 . Note 1: 1/8 inch maximum except for and work, 1/16 inch maximum Fillet, Nozzle and Branch Connection Welds Throat dimension Size (leg). Dimension 1/16 . max 1/8 . 45 min min Socket and Slip-on Flange Welds 1/16 min Y Y. X 1/16 min Approximately 1/16 before WELDING Smaller of X. T or 1/4 Z. T = The nominal thickness of the pipe X = the lesser of or the hub thickness unless another size is shown on the engineering drawings Y = the lesser of or the fitting thickness unless another size is shown on the engineering drawings Z = for work, minimum of the greater of the pipe nominal wall thickness or 1 4 in.
7 (6 mm) and face fillet is not required unless specified by the design. September 20, 2012. For use by NCPWB Members Only ( NCPWB). PROCEDURE QUALIFICATION RECORD (PQR). WPS followed during WELDING of test coupon: (IT), Rev 0 Dated 10/6/81 Test Date: 11-24-81. WELDING Process(s) used: Gas Tungsten Arc/Shielded Metal Arc Type: Manual Base Metal SPECIFICATION : SA-312, Type 316 to Base Metal SPECIFICATION : SA-333 Grade 6. P-No: 8 Group No: 1 to P-No: 1 Group No: 1 Thickness: . Plate: Diameter if pipe: 10 Sch 160 Joint Type: Single V-Groove without backing, 1/8 root opening Filler Metal SPECIFICATION : SFA AWS Classification: ER309/E309-16 F-No.
8 : 6/5. A-No.: 8 Filler Metal Size: 1/8,3/32,1/8,5/32 Supplementary Filler Metal: NA. Weld Metal Deposit Thickness : Maximum Pass Thickness : <1/4 . Preheat Temp ( F): 70 Interpass Temp ( F): 350 WELDING Position/Progression: 5G Uphill Tungsten Type/Size: 2% Thoria, 1/8 Current: DC Polarity: SP/RP Travel Speed: NA ipm Postweld Heat Treatment ( F): None Heat Treatment Time (Hrs): NA. Shielding Gas Composition : WELDING Grade Argon, 20 CFH Backing Gas: Argon, 10-30 CFH. Stringer/Weave Bead: Stringer and Weave Transfer Mode: NA. Oscillation: NA Single/Multi-Pass: Multi Single/Multi-Arc: Single Layer Process Filler Class Diameter Amperage Travel Speed(ipm) Other 1,2 GTAW ER309 1/8 80-120 3-5.
9 3,4 SMAW E309-16 3/32 60-110 5,6 SMAW E309-16 1/8 80-105 7,8 SMAW E309-16 5/32 130-150 9,13 SMAW E309-16 1/8 80-130 Reduced Section Tensile Tests Specimen No. Width/Dia. Thickness Area Ult. Load (lbs) Ult. Stress (psi) Failure Location 5G-1 55,500 72,900 Base Metal 5G-2 56,000 73,500 Base Metal Guided Bend Tests [ X ] (Side) [ ] (a) (Trans R&F) [ ] (b)(Long R&F). Side Acceptable Side Acceptable Side Acceptable Side Acceptable Welder's Name: David Touhey Stamp No. 1B Test Number: 8-7075-D. WELDING Witnessed by : Jagdish Gupta Specimens Evaluated by : Twin City Testing and Eng. Lab We Certify that the statements in this record are correct, and that the test coupons were prepared, welded and tested in accordance with the requirements of Section IX of the ASME Code.
10 NATIONAL CERTIFIED. PIPE WELDING BUREAU Contractor: By: Date: BY: Chairman, Technical Committee NCPWB Form QW-483 4/87 PQR Number: 87805. For use by NCPWB members only ( NCPWB). PROCEDURE QUALIFICATION RECORD (PQR). WPS followed during WELDING of test coupon: P8-P1-ST(ap) Test Date: 1-10-83. WELDING Process(s) used: Gas Tungsten Arc Type: Manual Base Metal SPECIFICATION : SA-312, Type 304 to Base Metal SPECIFICATION : SA-333 Grade 6. P-No: 8 Group No: 1 to P-No: 1 Group No: 1 Thickness: . Plate: Diameter if pipe: 8 Joint Type: Single V-Groove without backing, 1/8 root opening Filler Metal SPECIFICATION : SFA AWS Classification: ER309 F-No.