This specification covers the requirements for 33 grades of titanium and titanium alloy welded pipe intended for general corrosion resisting and elevated temperature service

Normal Material :

Grade 1-Unalloyed titanium, low oxygen

Grade 2-Unalloyed titanium, standard oxygen

Grade 2H-Unalloyed titanium(Grade 2 with 58 ksi minimum UTS)

Grade 5-Titanium alloy(6% aluminum,4% vana-dium)

Grade 7-Unalloyed titanium plus 0.12 to 0.25% palladium,standard oxygen

Grade 7H-Unalloyed titanium plus 0.12 to 0.25% palladium(Grade 7 with 58 ksi minimum UTS)

Grade 9-Titanium alloy(3% aluminum, 2.5% va-nadium)

Grade 12-Titanium alloy(0.3% molybdenum,0.8 % nickel)

Grade 23-Titanium alloy(6% aluminum,4% vanadium,extra low interstitial, ELI)etc.

Size

NPS:1/8:-8"(10mm-219mm),Wall thickness:SCH10 SCH40 STD SCH80 etc

End type

Plain end,threaded end,beveled end

Processing

Ti Sponge,electrolyze,smelt,forge,rod bellet,extude,forge,straighten etc.

Surface

Polishing,Acid pickling,Bright surface

Manufacture

1.Welded pipe shall be made from annealed flat-rolled products by a welding process that will yield a product meeting the requirements of this specification.

1.1 Welded pipe may be further reduced by cold working or hot working. Cold reduced pipe shall be annealed after cold working at a temperature of not less than 1000°F. Hot worked pipe finished above 1400°F (760°C) need not be further heat treated.

2.Pipe shall be furnished as follows unless otherwise specified:

2.1 Grades 1,2,2H,7,7H,11,13,14,16,16H,17,26H,33,and 37 shall be furnished as welded or annealed.

2.2 Grades 3,12,15,and 34 shall be furnished as annealed.

2.3 Grade 5,Grade 23,Grade 24,Grade 25,or Grade 35 shall be furnished as annealed,or aged.

2.4 Grade 9,Grade 18,or Grade 38 shall be furnished as annealed.

2.5 Grade 19,Grade 20,or Grade 21 shall be furnished as solution treated,or solution treated and aged.

Applications

Aerospace

Atuo industry

Chemical industry

Seawater desalination industry

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