ASME SB338 Titanium Grade 2 Seamless Pipe Titanium Welded Pipe ASTM B337 Titanium ERW Pipe
1. ASME SB338 Titanium Grade 2 Seamless Pipe:
Grade 2 titanium is often referred to as commercially pure titanium (CP titanium). It offers a good balance of strength, corrosion resistance, and formability. It is widely used in industries where a combination of these properties is required, especially in aerospace, chemical processing, and marine applications.
Seamless Pipe: This type of pipe is manufactured without welding, making it stronger and more resistant to pressure. The manufacturing process involves extruding titanium billets into pipe shapes, resulting in a high-quality pipe with fewer potential defects.
Applications: Commonly used in applications requiring high corrosion resistance and high strength, such as in marine equipment, heat exchangers, and medical devices.
Advantages:
- Excellent corrosion resistance in a wide range of environments, including seawater, chlorine, and organic acids.
- Suitable for high-pressure applications due to its seamless nature.
- Great for aerospace and medical applications due to its biocompatibility.
2. Titanium Welded Pipe:
Welded Pipe: This type of titanium pipe is made by welding a rolled titanium sheet or plate into a pipe form. While it may not be as strong as seamless pipe, it offers flexibility in length and diameter, and is often more economical for large production runs.
Grade 2 (CP Titanium) welded pipes are commonly used in situations where corrosion resistance and lightweight properties are essential but where pressure demands are not as high.
Applications: These pipes are typically used in chemical processing, marine, and medical industries where ease of production and corrosion resistance are prioritized over extreme strength.
Advantages:
- Cost-effective for certain applications where seamless pipes are not necessary.
- Suitable for structural applications and heat exchangers.
3. ASTM B337 Titanium ERW Pipe:
ASTM B337: This standard covers seamless and welded titanium pipes in grades such as Grade 1, Grade 2, and other titanium alloys. The pipes are used for high-temperature and high-strength applications, offering excellent resistance to corrosion.
ERW (Electric Resistance Welded) Pipe: This is a type of welded pipe formed by heating the edges of titanium sheets and welding them together with pressure. ERW pipes are generally less expensive than seamless pipes but are still suitable for many industrial applications.
Applications: Often used in industrial applications, heat exchangers, aerospace components, and marine environments.
Advantages:
- Lower cost compared to seamless pipes while still maintaining good mechanical properties.
- Good choice for structural and medium-pressure applications.
Summary Comparison:
| Type | Titanium Grade 2 Seamless Pipe | Titanium Welded Pipe | Titanium ERW Pipe |
| Manufacturing Process | Extrusion (no welding) | Rolled and welded | Electric resistance welding |
| Strength | Higher strength, suitable for high-pressure applications | Moderate strength, suitable for lower-pressure applications | Moderate strength, suitable for medium-pressure applications |
| Corrosion Resistance | Excellent | Excellent | Excellent |
| Applications | Aerospace, marine, chemical, medical devices | Structural, heat exchangers, chemical processing | Heat exchangers, aerospace, marine, industrial |
| Cost | Higher due to the seamless process | More economical than seamless | More economical than seamless |
| Formability | Excellent (due to seamless nature) | Good (welded seams) | Good (welded seams) |
| Pressure Resistance | Excellent, ideal for high-pressure | Moderate (depends on weld quality) | Moderate (depends on weld quality) |
4. Grade 2 Tubing Specification List:
| Specifications | ASTM B 337 ASME SB 337 / ASTM B 338 ASME SB 338 |
| Dimensions | ASTM, ASME and API |
| Size | ½”NB to 24”NB in Sch 10s, 40s, 80s, 160s, XXS. |
| Specialized in | Large Diameter Size |
| Type | Seamless / ERW / Welded / Fabricated |
| Form | Round, Hydraulic Etc |
| Length | Single Random, Double Random & Cut Length. |
| Grade | Titanium Grade2, Titanium Grade 5 |
| End | Plain End, Beveled End, Threaded |
5. Titanium Tube Sizes
| Wall Thickness | Titanium Tube Sizes ( O.D.) |
| .010 | 1/16" , 1/8" , 3/16" |
| .020 | 1/16" , 1/8" , 3/16" , 1/4" , 5/16" , 3/8" |
| .012 | 1/8" |
| .016 | 1/8" , 3/16" |
| .028 | 1/8" , 3/16" , 1/4" , 5/16" , 3/8" , 1/2" , 3/4" , 1" , 1 1/2" , 2" |
| .035 | 1/8" , 3/16" , 1/4" , 5/16" , 3/8" , 7/16" , 1/2" , 16" , 5/8" , 3/4" , 7/8" , 1" , 1 1/4" , 1 1/2" , 1 5/8" , 2" , 2 1/4" |
| .049 | 3/16" , 1/4" , 5/16" , 3/8" , 1/2" , 16" , 5/8" , 3/4" , 7/8" , 1" , 1 1/8" , 1 1/4" , 1 1/2" , 1 5/8" , 2" , 2 1/4" |
| .065 | 1/4" , 5/16" , 3/8" , 1/2" , 16" , 5/8" , 3/4" , 7/8" , 1" , 1 1/4" , 1 1/2" , 1 5/8" , 1 3/4" , 2" , 2 1/2" , 3" |
| .083 | 1/4" , 3/8" , 1/2" , 5/8" , 3/4" , 7/8" , 1" , 1 1/4" , 1 1/2" , 1 5/8" , 1 7/8" , 2" , 2 1/2" ,3" |
| .095 | 1/2" , 5/8" , 1" , 1 1/4" , 1 1/2" , 2" |
| .109 | 1/2" , 3/4" , 1" , 1 1/4" , 1 1/2" , 2" |
| .120 | 1/2" , 5/8" , 3/4" , 7/8" , 1" , 1 1/4" , 1 1/2" , 2" , 2 1/4" , 2 1/2" , 3" |
| .125 | 3/4" , 1" , 1 1/4" , 1 1/2" , 2" , 3" , 3 1/4" |
| .134 | 1" |
| .250 | 3" |
| .375 | 3 1/2" |
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ASME SB338 Titanium Grade 2 Seamless Pipe Titanium Welded Pipe ASTM B337 Titanium ERW Pipe Images
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