2.20 WELDING PROCEDURE MANUAL

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GENERAL POLICY

QUALIFIED WELDING PROCEDURE SPECIFICATIONS (QWPS)

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PIPE SIZE LESS THAN OR EQUAL TO 2.375 O.D.

WELDING PROCESS FITTING/PIPE

MATERIAL PIPE SIZE

(INCH)

WALL THICKNESS

RANGE (INCH)

PROCEDURE NO.

POSITION/ DIRECTION†

SMAW (Stick) Butt

P1 Group 1 to P1 Group 2

API 5L Gr B to API 5LX-65

≤ 2” 0.109 to 0.436 200 Fixed/VDH

SMAW (Stick) (6010 Root – 7018 fill and

cap)

Butt

P1 Group 1 to P1 Group 2

API 5L Gr B to API 5LX-65

≤ 2” 0.109 to 0.436 220

Fixed/VDH (root)

Fixed/VUH (fill and cap)

GMAW (Wire) 100% CO2 or 75% Ar / 25%

CO2

Butt

P1 Group 1 to P1 Group 2

API 5L Gr B to API 5LX-65

≤ 2” 0.109 to 0.240 230 Fixed/VDH

GTAW 100% Argon

Butt

P1 Group 1 to P1 Group 2

API 5L Gr B to API 5LX-65

≤ 2” 0.109 to 0.436 240 Fixed/VUH

GTAW 100% Argon (root) and SMAW

(7018 fill and cap)

Butt

P1 Group 1 to P1 Group 2

API 5L Gr B to API 5LX-65

≤ 2” 0.109 to 0.436 250 Fixed/VUH

† For Position/Direction…

Fixed/VUH = Fixed Position, Vertical Uphill Rolled/VUH = Rolled Position, Vertical Uphill Fixed/VDH = Fixed Position, Vertical Downhill

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GENERAL POLICY

QUALIFIED WELDING PROCEDURE SPECIFICATIONS (QWPS)

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PIPE SIZE GREATER THAN 2.375 THROUGH UNLIMITED O.D.

WELDING PROCESS FITTING/PIPE

MATERIAL PIPE SIZE

(INCH)

WALL THICKNESS

RANGE (INCH)

(QW-403)

PROCEDURE NO.

POSITION/ DIRECTION†

SMAW (Stick) Butt

P1 Group 1 to P1 Group 2

API 5L Gr B to API 5LX-65

> 2 0.154 – 0.864 600 Fixed/VDH

SMAW (Stick) (6010 Root – 7018 fill and

cap)

Butt

P1 Group 1 to P1 Group 2

API 5L Gr B to API 5LX-65

> 2 0.154 – 0.864 620 Fixed/VDH

GTAW 100% Argon (root) and SMAW

(7018 fill and cap)

Butt

P1 Group 1 to P1 Group 2

API 5L Gr B to API 5LX-65

> 2 0.154 – 0.864 640

Fixed/VUH (root)

Fixed/VDH (fill and cap)

GMAW (Wire) 100% CO2 or 75% Ar / 25%

CO2

Butt

P1 Group 1 to P1 Group 2

API 5L Gr B to API 5LX-65

> 2 0.154 – 0.475 650 Fixed/VDH

GMAW (Wire) 100% CO2 or 75% Ar / 25% CO2 (root) and FCAW (Flux Core)

100% CO2 (fill and cap)

Butt

P1 Group 1 to P1 Group 2

API 5L Gr B to API 5LX-65

> 2 0.154 – 0.864 660 Fixed/VUH

GTAW 100% Argon (root) and FCAW (Flux Core)

100% CO2 (fill and cap)

Butt

P1 Group 1 to P1 Group 2

API 5L Gr B to API 5LX-65

2-1/2 -12 0.154 – 0.864 680 Fixed/VUH

† For Position/Direction… Fixed/VUH = Fixed Position, Vertical Uphill Rolled/VUH = Rolled Position, Vertical Uphill Fixed/VDH = Fixed Position, Vertical Downhill

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QUALIFIED WELDING PROCEDURE SPECIFICATIONS (QWPS)

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GENERAL POLICY

QUALIFIED WELDING PROCEDURE SPECIFICATIONS (QWPS)

04/25/11