Titanium Grade 1 Pipes & Tubes

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Product Overview

Om Export India Pvt Ltd is a premier manufacturer, stockist, and global supplier of high-purity Titanium Grade 1 Pipes and Tubes (UNS R50250 / DIN 3.7025 / Commercially Pure Titanium). Titanium Grade 1 is the softest, most ductile, and highest purity unalloyed titanium grade (minimum 99.5% Ti), engineered specifically for applications demanding maximum cold formability, high thermal conductivity, and outstanding resistance to oxidizing environments, wet chlorine, chloride salts, and organic acids.

Our complete titanium inventory covers ASTM B861 seamless pressure pipes, ASTM B338 thin-wall condenser and heat exchanger tubes, and ASTM B862 automated welded/ERW piping systems. Operating with a low density of 4.51 g/cm³ (approx. 45% lighter than steel) and offering superior strength-to-weight efficiency, our Titanium Grade 1 piping and tubing systems are widely utilized across desalination plants, chemical process equipment, offshore marine coolers, chlor-alkali circuits, and aerospace fluid lines.

Maximum Cold Formability & Ductility: Exceptional elongation (≥24%) allows intricate bending, flaring, coiling, and expansion into tubesheets without work hardening.
Corrosion Resistance in Oxidizing Media: Forms an instantaneous, self-healing rutile (TiO2) oxide film providing immunity to chlorides, wet chlorine gas, hypochlorites, and nitric acid.
High Thermal Transfer: Low fouling rates and thin-wall construction optimize heat transfer coefficients in marine condensers and brine evaporators.

Key Features

Maximum Cold Formability: High elongation (≥24%) enables tight radius cold bending, flaring, expanding, and coiling.
Lightweight Structural Efficiency: Density of 4.51 g/cm³ provides roughly 45% weight reduction compared to stainless steels and nickel alloys.
Chloride & Wet Chlorine Immunity: Resistant to pitting, crevice corrosion, and erosion in seawater, brackish water, and chlorinated solutions.
Oxidizing Acid Protection: High corrosion resistance in nitric acid, chromic acid, and organic acids across varying concentrations.
Smooth Surface Micro-Finish: Bright annealed or pickled surfaces prevent biological fouling and scaling, reducing fluid friction.
Weld Integrity: Readily weldable using GTAW (TIG) under inert gas (argon) trailing shields to prevent atmospheric contamination.

Product Specifications

Specification Parameter	Standard Specification / Technical Value
Seamless Pipe Size Range	1/2" NB to 24" NB (Outer Diameter: 21.34 mm to 609.6 mm OD)
Tubing Size Range (Seamless / Welded)	1.0 mm OD to 254.0 mm OD (Wall Thickness: 0.1 mm to 20.0 mm)
Pipe Wall Thickness & Schedules	SCH 10S, SCH 20, SCH 30, SCH 40S/STD, SCH 80S/XS, SCH 120, SCH 160, SCH XXS
Governing Standards	ASTM B861, ASME SB861, ASTM B338, ASME SB338, ASTM B862, ASME SB862
Manufacturing Methods	Cold Drawn Seamless (CDS), Hot Extruded Seamless, Automated TIG Welded, ERW
Delivery & Heat Treatment	Annealed (Recrystallized), Pickled & Passivated, Bright Annealed (BA)
Standard Lengths	Single Random Length (SRL), Double Random Length (DRL), Custom Cut Lengths up to 15,000 mm
End Configurations	Plain Square Cut End (PE), Beveled End (BE 30°/37.5° per ASME B16.25), Threaded Ends

Dimensions & Sizes

Nominal Pipe Size (NPS)	Outside Diameter (OD mm / in.)	Wall Thickness (WT mm / in.)	Nominal Schedule	Weight (kg/m)	Weight (lb/ft)
1/2" NB	21.34 mm (0.840")	1.65 mm (0.065")	SCH 10S	0.45 kg/m	0.30 lb/ft
1/2" NB	21.34 mm (0.840")	2.77 mm (0.109")	SCH 40S	0.72 kg/m	0.48 lb/ft
1/2" NB	21.34 mm (0.840")	3.73 mm (0.147")	SCH 80S	0.92 kg/m	0.62 lb/ft
3/4" NB	26.67 mm (1.050")	1.65 mm (0.065")	SCH 10S	0.57 kg/m	0.38 lb/ft
3/4" NB	26.67 mm (1.050")	2.87 mm (0.113")	SCH 40S	0.95 kg/m	0.64 lb/ft
3/4" NB	26.67 mm (1.050")	3.91 mm (0.154")	SCH 80S	1.24 kg/m	0.83 lb/ft
1" NB	33.40 mm (1.315")	1.65 mm (0.065")	SCH 10S	0.73 kg/m	0.49 lb/ft
1" NB	33.40 mm (1.315")	3.38 mm (0.133")	SCH 40S	1.42 kg/m	0.95 lb/ft
1" NB	33.40 mm (1.315")	4.55 mm (0.179")	SCH 80S	1.83 kg/m	1.23 lb/ft
1-1/4" NB	42.16 mm (1.660")	1.65 mm (0.065")	SCH 10S	0.93 kg/m	0.62 lb/ft
1-1/4" NB	42.16 mm (1.660")	3.56 mm (0.140")	SCH 40S	1.92 kg/m	1.29 lb/ft
1-1/2" NB	48.26 mm (1.900")	1.65 mm (0.065")	SCH 10S	1.07 kg/m	0.72 lb/ft
1-1/2" NB	48.26 mm (1.900")	3.68 mm (0.145")	SCH 40S	2.29 kg/m	1.54 lb/ft
1-1/2" NB	48.26 mm (1.900")	5.08 mm (0.200")	SCH 80S	3.06 kg/m	2.06 lb/ft
2" NB	60.33 mm (2.375")	1.65 mm (0.065")	SCH 10S	1.35 kg/m	0.91 lb/ft
2" NB	60.33 mm (2.375")	3.91 mm (0.154")	SCH 40S	3.08 kg/m	2.07 lb/ft
2" NB	60.33 mm (2.375")	5.54 mm (0.218")	SCH 80S	4.24 kg/m	2.85 lb/ft
3" NB	88.90 mm (3.500")	2.11 mm (0.083")	SCH 10S	2.59 kg/m	1.74 lb/ft
3" NB	88.90 mm (3.500")	5.49 mm (0.216")	SCH 40S	6.39 kg/m	4.29 lb/ft
3" NB	88.90 mm (3.500")	7.62 mm (0.300")	SCH 80S	8.65 kg/m	5.81 lb/ft
4" NB	114.30 mm (4.500")	2.11 mm (0.083")	SCH 10S	3.35 kg/m	2.25 lb/ft
4" NB	114.30 mm (4.500")	6.02 mm (0.237")	SCH 40S	9.10 kg/m	6.12 lb/ft
4" NB	114.30 mm (4.500")	8.56 mm (0.337")	SCH 80S	12.65 kg/m	8.50 lb/ft
6" NB	168.28 mm (6.625")	2.77 mm (0.109")	SCH 10S	6.41 kg/m	4.31 lb/ft
6" NB	168.28 mm (6.625")	7.11 mm (0.280")	SCH 40S	16.02 kg/m	10.76 lb/ft
6" NB	168.28 mm (6.625")	10.97 mm (0.432")	SCH 80S	24.12 kg/m	16.21 lb/ft
8" NB	219.08 mm (8.625")	3.76 mm (0.148")	SCH 10S	11.31 kg/m	7.60 lb/ft
8" NB	219.08 mm (8.625")	8.18 mm (0.322")	SCH 40S	24.11 kg/m	16.20 lb/ft
8" NB	219.08 mm (8.625")	12.70 mm (0.500")	SCH 80S	36.63 kg/m	24.61 lb/ft

Chemical Composition

Element	ASTM B861 / ASTM B338 Gr. 1 (%)	UNS R50250 (%)	DIN 3.7025 (%)
Titanium (Ti)	99.5 Min (Balance)	99.5 Min (Balance)	99.5 Min (Balance)
Iron (Fe, Max)	0.20	0.20	0.20
Oxygen (O, Max)	0.18	0.18	0.18
Carbon (C, Max)	0.08 (0.10 Max)	0.08	0.08
Nitrogen (N, Max)	0.03	0.03	0.03
Hydrogen (H, Max)	0.015 (150 ppm)	0.015 (150 ppm)	0.015 (150 ppm)
Residual Elements (Each / Total Max)	0.10 / 0.40	0.10 / 0.40	0.10 / 0.40

Mechanical Properties

Mechanical Property	Metric Value	Imperial Value
Tensile Strength, Ultimate (Min / Typ)	240 – 350 MPa	34,800 – 50,750 psi
Tensile Strength, Yield (0.2% Offset)	170 – 310 MPa	24,700 – 45,000 psi
Elongation at Break (Min)	24% Min (Typ. 30%)	24% Min
Reduction of Area (Min)	35%	35%
Hardness (Rockwell / Brinell)	70 HRB / 120 HBW Max	70 HRB / 120 HBW Max
Modulus of Elasticity (Tension)	105 GPa	15,200 ksi
Charpy V-Notch Impact Toughness	310 J	229 ft-lb
Density & Poisson's Ratio	4.51 g/cm³	0.163 lb/in³ \| ν: 0.37

Standards & Specifications

Standard Designation	Governing Body / Region	Scope & Product Type
ASTM B861 / ASME SB861	ASTM / ASME (USA)	Standard Specification for Titanium and Titanium Alloy Seamless Pipe (Grade 1 / UNS R50250)
ASTM B338 / ASME SB338	ASTM / ASME (USA)	Seamless and Welded Titanium and Titanium Alloy Tubes for Condensers and Heat Exchangers
ASTM B862 / ASME SB862	ASTM / ASME (USA)	Standard Specification for Titanium and Titanium Alloy Welded Pipe
DIN 17861 / DIN 17866	German Standards (DIN)	Seamless and Welded Titanium Tubes for Pressure Purposes (Werkstoff 3.7025)
EN 10216-5	European Standard	Seamless Titanium and Titanium Alloy Tubes for Pressure Purposes
NACE MR0175 / ISO 15156	NACE / ISO	Materials for use in H2S-containing environments in oil and gas production

Applications

Titanium Grade 1 pipes and tubes are widely utilized in critical process, marine, and energy installations:

Chemical & Petrochemical Processing: Chlorine dioxide bleaching towers, chlor-alkali cells, nitric acid production lines, and organic synthesis reactors.
Seawater Desalination & Power Generation: Multi-Stage Flash (MSF) brine heaters, steam surface condensers, auxiliary cooling loops, and seawater intake headers.
Marine & Offshore Engineering: Offshore platform heat exchangers, titanium exhaust lines, ballast water treatment piping, and subsea sampling systems.
Pulp & Paper Industry: Chlorination washers, bleaching stages, and corrosive black liquor recovery process tubing.
Pharmaceutical & Food Processing: High-purity bio-reactors, sanitary fluid transfer lines, and active pharmaceutical ingredient (API) evaporators.
Aerospace & Defense: Low-pressure hydraulic lines, cabin environmental control ducting, and lightweight military structural components.

Frequently Asked Questions

Q1: What distinguishes Titanium Grade 1 from Titanium Grade 2?
Titanium Grade 1 has lower allowable levels of interstitial oxygen (≤0.18% vs. ≤0.25%) and iron (≤0.20% vs. ≤0.30%) compared to Grade 2. This makes Grade 1 softer, more ductile, and easier to cold form, flare, and deep draw, while Grade 2 provides higher mechanical tensile and yield strength.

Q2: Why is Titanium Grade 1 specified for heat exchanger tubes?
Grade 1 combines high ductility (allowing roller-expansion into tubesheets without cracking) with exceptional corrosion resistance in chloride and saline environments, preventing localized pitting and crevice corrosion while maintaining thermal efficiency.

Q3: How does Titanium Grade 1 perform in chloride and seawater environments?
Titanium Grade 1 forms a stable, protective titanium dioxide (TiO2) film upon exposure to air or moisture. This passive film provides immunity to pitting, crevice attack, and stress corrosion cracking in high-velocity seawater up to 80°C (176°F).

Q4: What certifications accompany Om Export India Pvt Ltd Titanium Grade 1 shipments?
Every delivery includes EN 10204 Type 3.1 / 3.2 Material Test Certificates, Spectro Chemical Analysis (including hydrogen, nitrogen, and oxygen interstitial testing), 100% Eddy Current / Ultrasonic NDT reports, and flaring/flattening mechanical test reports.