Aimed to provide the Canadian Oil Sands with a pipe product that would handle the synergistic problem of erosion and corrosion

»Option 1: alloy 625 clad pipe → end user claimed too expensive

First Duracorr Pipe

» A 10ft plate was formed on a press brake and hand stick welded at 4” per minute to produce a 24” x .375” min wall Duracorr pipe for a Syncrude test program → proved successful

Gandytec's original objective → to economically produce long lengths of large OD ERW Duracorr pipe on a cage forming mill at 53ft per min from coil

700 feet of 24” x .375” x 51ft Duracorr pipe was formed and welded by ERW successfully at 53 feet per minute

» Installed in course tailings pipelines → remains in service

150 feet of 26” x .500” DSAW Duracorr pipe produced

» Installed in course tailings pipelines → wear results unknown

Created the Duracorr pipe specification: ASTM A-1053 Standard Specification for Welded Ferritic-Martensitic Stainless Steel Pipe

6,000 feet 24” x .410” min wall x 51ft Duracorr pipe was ERW welded at 53 ft per minute

» Production from coils was eliminated due to coil heat treat results = Currently manufactured from discreet plates only

» ERW proved to be marginal as substantial weld repair was required

» Pipe remains in course tailings line service

11,000 feet 24” x .410” min x 51 ft Duracorr pipe was welded by ERW/SAW

5,000 feet 28” x .410” min x 40 ft Duracorr pipe welded by DSAW

Standardized DSAW as the weld method for producing Duracorr to provide a more reliable weld with production speeds up to 48 inches per minute and in lengths up to 51 ft

Qty 6, 28” and 30” OD x .750” wall RFSO Duracorr pipe spools were fabricated for the MARIOS field test program. Two, 10 foot pipe spools are to be field tested in Syncrude, Suncor and CNRL tailings lines

Participated and became a member of MARIOS (materials and reliability in Oil Sands) program.

26” x .750” x 80 foot flanged Duracorr pipe spools were fabricated and delivered to an Oil Sands site for use in hydro-transport and tailings pipelines

475 feet 10”, 14”, 18” XH Duracorr pipe manufactured

Developing DSAW welding speeds up to 100 inches per minute

Working to incorporate Duracorr as a listed material in ASME B31.3 and B31.11

Developing Duracorr pipe fittings