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Development, Specifications, and Application Experience with 80 ksi (552 MPa) Linepipe by J. Malcolm Gray Paper present PowerPoint Presentation
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Development, Specifications, and Application Experience with 80 ksi (552 MPa) Linepipe by J. Malcolm Gray Paper presented at the ABM Annual Congress Vitoria, Brasil 23 July 2007. Overview. Introduction Application Metallurgical Approaches Chemical Compositions Specifications

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Presentation Transcript
slide1
Development, Specifications, and Application Experience with 80 ksi

(552 MPa) Linepipe

by

J. Malcolm Gray

Paper presented at the ABM Annual Congress

Vitoria, Brasil 23 July 2007

overview
Overview
  • Introduction
  • Application
  • Metallurgical Approaches
  • Chemical Compositions
  • Specifications
  • Weldability
  • Fracture Control
macro trends
Macro Trends
  • Higher Pressures
  • Thicker Wall
  • Higher Toughness
  • Lower Carbon
  • Higher Alloy Contents
  • Need for updated specifications.
  • Cost pressures due to steel prices.
  • Globalization of manufacture.
slide9

Table IV

Chemical Compositions of X-80 Pipe Use For Recent Projects

slide10
No prior use of X-70/80 acicular ferrite steels.
  • Lack of knowledge or confidence.

(c) Isolation.

  • Committee squabbling.

(e) Copy and paste mentality at Engineering companies.

(f) No platform for change.

(g) Bureaucratic inertia.

(h) Long term bad habits.

slide11

Table V

Summary of EWI Microalloying Recommend Chemical Composition Limits

slide18

Development of Blended Approach to Defect Acceptance Criteria

(Shaded area was adopted by the project)

Figure 15. Defect acceptance levels for Cheyenne Plains X-80 Girth Welds.

slide21

Project

Year

Company

Country

Product

Grade

Wall thickness

(mm)

Tons

Production History 0.10% Niobium HTP Steel

TCPL

1972-Present

Ipsco

Canada

Coil and Pipe

X-70/80

11.8

TCPL, Hearst Ontario

1982

Algoma Steel

Canadian Phoenix

Canada

Plate

Pipe

15.7

35000

Iroquois Project

1990

Stelco

Canada

Pipe

X65

20.0

18000

Cantarell

1998

Mittal Steel

PMT

Mexico

Slab, Plate, Pipe

X70 sour gas

22.6

65000

Cameron Highway, offshore

2003

Azov Stal Steel

Ukraine

Plate

X-65

18.0

Welspun

India

Pipe

X-65

18.0

Cheyenne Plains

2004

Oregon Steel Mills/Napa Pipe

USA

Plate, Coil, Pipe

X80

11.8

35000

1st West-East Gas Pipeline

2004

Bao Steel

China

Plate and Coil

X70

Anshan Steel

China

Plate

X70

Julong Pipe

China

Pipe

X70

Europipe

Germany

Pipe

X70

30000

Independence Trail, offshore

2005

Azov Stal

Welspun

Ukraine

India

Plate

X70

30.9

TCPL

2005

Azov Stal

Welspun

Ukraine

India

Plate

Pipe

X-75 (X-80)

22.0

800

Gulf South

2006

Nanjing Steel

China

Plate and Coil

X-80

Rockies Express

2007-2009

Oregon Steel

USA

Coil

X70/X80

14.3/15.9