NACE MR0175 Grade 2 Titanium Pipe
NACE MR0175 Grade 2 3-inch Titanium Tubing is a high-performance tubing designed for use in corrosive environments, particularly in downhole equipment and piping systems in the oil and gas industry.
Description
NACE MR0175 Grade 2 titanium tubing offers excellent corrosion resistance to hydrogen sulfide (H₂S), carbon dioxide (CO₂), and other corrosive media for use in harsh corrosive environments. Titanium is relatively lightweight, which helps reduce the overall weight of the equipment and improves ease of transportation and installation.
NACE MR0175 Requirements
| Requirement | Description |
|---|---|
| Application Environment | Designed for equipment operating in H₂S-containing oil and gas production environments (Sour Service). |
| Material Selection | Materials must be selected based on H₂S partial pressure, chloride concentration, temperature, pH, and operating stress. |
| Corrosion Resistance | Materials should provide excellent resistance to sulfide stress cracking (SSC), stress corrosion cracking (SCC), and hydrogen damage where applicable. |
| Heat Treatment | Heat treatment shall comply with applicable ASTM or ASME specifications to achieve stable mechanical properties and corrosion performance. |
| Manufacturing Quality | Pipes should be manufactured under recognized standards such as ASTM B861 or ASTM B338, with strict dimensional and surface quality control. |
| Inspection & Testing | Recommended inspections include PMI, dimensional inspection, visual examination, ultrasonic or eddy current testing, and mechanical property testing. |
| Material Certification | EN 10204 3.1 Mill Test Certificate (MTC) is commonly supplied to verify chemical composition, mechanical properties, and manufacturing traceability. |
Top Quality NACE MR0175 Grade 2 Titanium Tubing
NACE MR0175 Grade 2 Titanium Pipe Specifications
| Item | Value |
|---|---|
| Material | Titanium Grade 2 |
| UNS | R50400 |
| Standard | ASTM B861 / ASTM B338 |
| NACE | MR0175 / ISO 15156 |
| Outside Diameter | 6mm–219mm |
| Wall Thickness | 0.5–20mm |
| Length | Max 12000mm |
| Type | Seamless / Welded |
| Surface | Pickled / Bright / Polished |
| Certificate | EN10204 3.1 |
Available Sizes of NACE MR0175 Grade 2 Titanium Pipe
| Parameter | Specification |
|---|---|
| Material | Titanium Grade 2 (UNS R50400) |
| Product Type | Seamless Pipe / Welded Pipe |
| Standard | ASTM B861, ASTM B338, ASME SB861 |
| Outside Diameter (OD) | 6 mm – 219 mm (1/4" – 8") |
| Wall Thickness (WT) | 0.5 mm – 20 mm |
| Nominal Pipe Size (NPS) | 1/4" – 8" (Larger sizes available upon request) |
| Pipe Schedule | SCH 5S, SCH 10S, SCH 40S, SCH 80S, SCH 160, XXS |
| Length | 1,000 mm – 12,000 mm (Random or Fixed Length) |
| Pipe Ends | Plain End (PE), Beveled End (BE), Threaded (Optional) |
| Surface Finish | Pickled, Bright Annealed (BA), Polished |
| Manufacturing Process | Seamless, Welded |
| Tolerance | According to ASTM B861 / ASTM B338 |
| Inspection | PMI, UT, Eddy Current, Hydrostatic Test, Dimensional Inspection |
| Certification | EN 10204 3.1, SGS, BV, TUV, Third-Party Inspection Available |
| Customization | Custom OD, Wall Thickness, Length, Surface Finish & Packaging Available |
B338 Gr2 Chemical Composition
| Element | Weight % |
|---|---|
| C | ≤0.08 |
| O | ≤0.25 |
| N | ≤0.03 |
| H | ≤0.015 |
| Fe | ≤0.30 |
| *OEE | ≤0.10 |
| *OET | ≤0.40 |
| Ti | Remaining |
Mechanical Properties
| Property | Value |
|---|---|
| Tensile Strength | ≥345 MPa |
| Yield Strength | ≥275 MPa |
| Elongation | ≥20% |
| Hardness | Max 160 HB |
Applications for NACE MR0175 Grade 2 titanium metal tubing:
Downhole equipment: Used in the manufacture of oil well casing, tubing, oil recovery trees and other equipment to ensure long-term stable operation in environments containing hydrogen sulfide and carbon dioxide.
Chemical industry: used to manufacture equipment such as reactors, heat exchangers, piping systems, etc., applicable to a wide range of corrosive media.
Marine engineering: used to manufacture submarine pipelines, platform structures, etc., resisting the corrosion of seawater.
Medical equipment: used in the manufacture of medical devices and equipment, such as surgical instruments, implants, etc., utilizing its biocompatibility and corrosion resistance.
Grade 2 Titanium vs Stainless Steel
| Property | Grade 2 Titanium | 316L Stainless Steel | Duplex 2205 |
|---|---|---|---|
| Corrosion Resistance | ★★★★★ | ★★★☆☆ | ★★★★☆ |
| Seawater Resistance | Excellent | Moderate | Good |
| Chloride SCC Resistance | Excellent | Fair | Good |
| H₂S Sour Service | Excellent | Good | Very Good |
| Density | 4.51 g/cm³ | 7.99 g/cm³ | 7.80 g/cm³ |
| Strength-to-Weight Ratio | Excellent | Moderate | High |
| Service Life | 30+ Years | 10–20 Years | 20–30 Years |
| Maintenance | Low | Medium | Medium |
| Initial Material Cost | High | Low | Medium |
Although the initial cost of Grade 2 Titanium is higher than stainless steel, its longer service life, reduced maintenance, and superior corrosion resistance often result in a lower total life-cycle cost, especially in aggressive marine and chemical environments.
Equivalent Grades of Grade 2 Titanium (UNS R50400)
| Standard | Equivalent Grade / Designation |
|---|---|
| ASTM / ASME | Grade 2 Titanium |
| UNS | R50400 |
| ISO | ISO 5832-2 Grade 2 |
| DIN / W.Nr. | 3.7035 |
| EN | Ti2 (EN standards) |
| JIS | Class 2 Titanium |
| GB (China) | TA2 |
Inspection & Testing of NACE MR0175 Grade 2 Titanium Pipe
| Inspection Item | Purpose | Standard / Method |
|---|---|---|
| Positive Material Identification (PMI) | Verify material grade and chemical composition | XRF Analyzer |
| Chemical Composition Analysis | Confirm compliance with Grade 2 requirements | ASTM B861 / ASTM B338 |
| Mechanical Properties Test | Tensile strength, yield strength, elongation | ASTM E8 |
| Dimensional Inspection | Check OD, WT, length, and tolerances | ASTM B861 |
| Visual & Surface Inspection | Ensure a clean surface free from cracks, pits, and defects | ASTM B861 |
| Ultrasonic Testing (UT) | Detect internal defects and discontinuities | ASTM E213 |
| Eddy Current Testing (ECT) | Detect surface and near-surface flaws | ASTM E309 |
| Hydrostatic Pressure Test | Verify pressure integrity and leak resistance | ASTM B861 (When Required) |
| Flattening / Flaring Test | Evaluate ductility and forming performance | ASTM B861 |
| Mill Test Certificate (MTC) | Full material traceability and test results | EN 10204 3.1 |
| Third-Party Inspection | Independent quality verification | SGS, BV, TUV, Lloyd's Register (Optional) |
Delivery process of NACE MR0175 Grade 2 seamless titanium tube
NACE MR0175 Grade 2 titanium round tube export experienced factory
Team Advantage
We have a team of highly skilled professionals who are committed to providing high quality products and services to our customers. Our team has the following advantages over our competitors:
Technical Expertise: Our team has excellent technical expertise in the production of titanium products.
Experience: Our team has many years of experience in the industry and a deep understanding of the market.
Customer orientated: We are customer orientated and prioritise our customers' needs.
Responsive: Our team is responsive and able to quickly resolve any issues that arise.
Communication: We have excellent communication skills and keep our customers informed throughout the production process.
FAQ
1. What is NACE MR0175 Grade 2 Titanium Pipe?
NACE MR0175 Grade 2 Titanium Pipe is a commercially pure titanium pipe (UNS R50400) manufactured for use in H₂S-containing (sour service) oil and gas environments. It offers outstanding resistance to seawater, chlorides, and many corrosive chemicals, making it suitable for offshore, petrochemical, and marine applications.
2. Does Grade 2 Titanium comply with NACE MR0175?
Grade 2 Titanium can be used in NACE MR0175 / ISO 15156 applications when the service conditions meet the requirements of the standard. Material selection should always consider factors such as H₂S partial pressure, chloride concentration, temperature, pH, and applied stress.
3. What is the difference between Grade 2 Titanium Pipe and Stainless Steel Pipe?
Compared with stainless steel, Grade 2 Titanium provides superior resistance to seawater corrosion, chloride stress corrosion cracking, and pitting corrosion. It is also approximately 40% lighter, making it a preferred choice for offshore and corrosive process environments.
4. What standards are available for Grade 2 Titanium Pipe?
We supply titanium pipes in accordance with:
ASTM B861
ASTM B338
ASME SB861
ASME SB338
Custom manufacturing according to customer specifications is also available.
5. What sizes can you supply?
Standard production range includes:
Outside Diameter: 6–219 mm
Wall Thickness: 0.5–20 mm
Length: Up to 12,000 mm
Custom dimensions are available upon request.
6. Do you supply seamless and welded titanium pipes?
Yes. We manufacture and supply both seamless and welded Grade 2 Titanium Pipes, depending on the application and customer requirements.
7. What inspection and testing do you perform?
Each batch can be inspected through:
PMI (Positive Material Identification)
Chemical Composition Analysis
Mechanical Property Testing
Ultrasonic Testing (UT)
Eddy Current Testing (ECT)
Hydrostatic Testing
Dimensional Inspection
Surface Inspection
Third-party inspections by SGS, BV, TUV, or other agencies are available upon request.
8. Can you provide EN 10204 3.1 Mill Test Certificates?
Yes. Every shipment can be supplied with EN 10204 3.1 Mill Test Certificate (MTC). Additional documentation, including third-party inspection reports and packing lists, can also be provided if required.
9. What industries use NACE MR0175 Grade 2 Titanium Pipe?
Typical applications include:
Oil & Gas Processing
Offshore Platforms
Petrochemical Plants
Desalination Systems
Chemical Processing Equipment
Marine Engineering
Heat Exchangers and Condensers
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