Procedures, considerations for welding X-80 line pipe established

Journal Article · Mon Sep 15 00:00:00 EDT 1997 · Oil and Gas Journal

OSTI ID:527593

Hillenbrand, H G ^[1]; Niederhoff, K A ^[2]; Hauck, G ^[3]; Perteneder, E ^[4]; Wellnitz, G ^[5]

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1. Europipe GmbH, Ratingen (Germany)
2. Mannesmann Forschungsinstitut, Duisburg (Germany)
3. Thyssen Schweisstechnik GmbH, Hamm (Germany)
4. Boehler-Schweisstechnik GmbH, Karpfenberg (Austria)
5. Mannesmann Demag Energie- and Umwelttechnik, Duesseldorf (Germany)

The possibility of manufacturing and laying high-strength Grade X-80 (GRS 550) linepipe has been proven in large projects that have already been implemented. Two welding methods for pipeline construction are well established: manual deposition of root and hot passes with cellulosic electrodes and of filler and cap passes with basic vertical-down electrodes (combined-electrode welding) and mechanized-gas-metal arc welding (GMAW). This is also true for the welding consumables, which have been well-tuned to match the pipe material in strength. The pipe material is suitable for unrestricted use in onshore and offshore applications. The paper discusses higher grades, composition, weldability, welding methods, and economics.

• OSTI ID: 527593
• Journal Information: Oil and Gas Journal, Vol. 95, Issue 37; Other Information: PBD: 15 Sep 1997
• Country of Publication: United States
• Language: English

Related Subjects

03 NATURAL GAS
02 PETROLEUM
36 MATERIALS SCIENCE
PIPELINES
LOW ALLOY STEELS
WELDING
INSTALLATION
GAS METAL-ARC WELDING
ECONOMICS
YIELD STRENGTH
TENSILE PROPERTIES
CRACK PROPAGATION