Titanium Gr2 seamless U tube ASME SB338
Titanium U tubes are increasingly used in various occasions. A common titanium grinding product is titanium tube. Because of its superior corrosion resistance and strength weight ratio, titanium U tube is used in various products. The development of many different alloys has expanded the application of titanium in industry, chemical processing and power generation.
| Standard | ASTM B338, ASME SB338 |
| Regular Grade | Grade 1 Grade 2 |
| Outer Diameter | 12.7mm 15mm 17mm 19mm 25.4mm 31mm etc. |
| Wall thickness | 0.9mm/1.0mm/1.2mm/1.5mm |
| Length | 3000 - 6000mm or other economical lengths |
| Finish | Polished, AP (Annealed & Pickled), BA (Bright & Annealed), MF |
| Form | Straight titanium Pipe, Coiled titanium tube |
| Type | Seamless, ERW, EFW, Welded, Fabricated |
| End | Plain End, Beveled End, Treaded |
| Marking | Standard, Grade, OD, Thickness, Length, Heat No. (Or as per customer's request.) |
| Application | Oil Tube, Gas Tube, Fluid Tube, Boiler and Heat exchanger |
| Value Added Service | Draw & Expansion as per required Size & Length, Polish (Electro & Commercial) Annealed & Pickled Bending, Machining Etc. |
| Test Certificate | Mill Test Certificate EN 10204/3.1,TPI Report, EN10204/3.2 |
Precautions for titanium pipe processing:
Titanium strip coil—Slitting forming—Welding—Shaping and sizing—Heat treatment—Straightening—Eddy current and ultrasonic testing—Air tightness testing—Finished welded pipe
During the deformation process, titanium pipe will gradually reduce wall and diameter with the rotation and feeding of the rolling mill. The pipe size required by the process can be obtained only after 5 ~ 10 rolling and finishing in one rolling pass. The cold rolling pipe mill can carry out large diameter reduction and wall reduction, but the dimensional accuracy is low after rolling, and the pipe end is prone to cracking, uneven concave convex and other phenomena. The cracking phenomenon can be solved mainly by grinding and leveling before pipe blank processing; For the uneven pipe end, similar to the "fish mouth" phenomenon, flat head treatment is required in the subsequent processing process, otherwise it will cause the plug stuffy accident. Therefore, this paper analyzes from the aspects of process, tooling and equipment, in order to find out the causes of uneven concave convex of pipe end and take effective measures to solve it.
Detailed Information
Material: Gr1, Gr2
Standard: ASTM B338
Size: OD9.52mm/12.7mm/15.9mm/19mm/21.7mm/25.4mm/32mm/33.4mm/38mm/45mm etc., WT0.5-3.0mm , L Max 12000mm
Wall thickness tolerance: +/- 10%
Length tolerance: +3.2mm
Type: Welded/Seamless
Surface: Polishing, Pickling
Chemical composition (Wt%)
| ASTM No. | Fe max | O max | N max | C max | H max | Pd | Al | Bal |
| Grade 1 | 0.2 | 0.18 | 0.03 | 0.1 | 0.015 | - | - | Ti |
| Grade 2 | 0.3 | 0.25 | 0.03 | 0.1 | 0.015 | - | - | Ti |
Physical Properties (Min)
| ASTM Grade | Alloy Composition | Tensile Strength | Yield Strength | Elongation min % |
| ksi | Mpa | ksi | Mpa | |
| Grade 1 | Unalloyed Ti ("Pure") 35A -CP1 | 35 | 240 | 25 | 170 | 30 |
| Grade 2 | Unalloyed Ti ("Pure") 50A -CP2 | 58 | 400 | 40 | 275 | 25 |
Detailed images:
U-tubes test : PMI +Penetrant testing
Titanium tubes Quality inspections:
UT ,PT ,Hydrodtatic test, Eddy current inspection,Chemical composition inspection,Dimention inspection,
Tensile testing, Radiographic inspection,Thickness inspection,PMI inspection
Titanium pipes / titanium tubes used in heat exchanger:
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Pickling Titanium Gr2 Seamless U Tube ASME SB338 For Heat Exchanger Images
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