ASTM B338 Seamless and Welded Titanium and Titanium Alloy Tube

ASTM B338 Seamless and Welded Titanium and Titanium Alloy Tube

Enterprise-grade ASTM B338 Seamless and Welded Titanium and Titanium Alloy Tube designed for surface condensers, evaporators, and heat exchangers is supplied by LINHUI Titanium. Stable forming performance is ensured by our tubes' regulated cold rolling and thickness tolerance of ±0.05mm.

With more than 200 tons of inventory, we can deliver stock in 3–7 days and complete standard manufacturing in 15–25 days. Our Grade 2 tubes have a minimum yield strength of 40 ksi (275 MPa) and a minimum tensile strength of 50 ksi (345 MPa). In harsh seawater conditions, grade 7 palladium-stabilized versions offer better crevice corrosion resistance in lowering acids beyond 80°C, prolonging equipment lifecycles beyond 40 years.

Key Features & Benefits

In situations high in chloride, you acquire unparalleled resistance to corrosion. At speeds of up to 20 m/s, the naturally occurring oxide film provides protection against corrosion and erosion-corrosion caused by microbes.

When compared to copper-nickel alternatives, the low density of 4.51 g/cm³ results in a 40% reduction in heat exchanger weight. Zero corrosion allowance criteria allow for thinner wall designs.

Our automated arc-welding method produces weld joints as strong as base metal. Since no filler metal is employed, the corrosion resistance is constant.

Manufacturing Process

Your tubes begin with vacuum arc remelting to eliminate inclusions. We perform controlled cold rolling in multiple passes, achieving precise wall uniformity.

For welded types, flat-rolled strips pass through automatic TIG welding stations. The weld seam receives 100% eddy current inspection per ASTM E426.

All tubes undergo mandatory stress-relief annealing at 650–750°C. This guarantees optimal ductility and eliminates residual stress from forming operations.

Final pickling in HF-HNO₃ solution removes surface scale. Each batch receives unique heat numbers for full traceability per EN 10204 3.1.

Quality Inspection

Every ASTM B338 Seamless and Welded Titanium and Titanium Alloy Tube undergoes nondestructive electric testing using eddy current (ASTM E426) or ultrasonic methods (ASTM E213). This detects subsurface cracks and voids before shipment.

Pneumatic testing at 100 psi air pressure verifies leak tightness. Tubes are submerged during testing to reveal even microscopic pinholes.

Flattening and flaring tests confirm weld integrity and ductility. Dimensional inspection maintains wall thickness within ±10% and outside diameter tolerances for proper tubesheet fit-up.

Chemical analysis verifies oxygen, nitrogen, carbon, and hydrogen content to prevent embrittlement. You receive Mill Test Certificates documenting all results with heat numbers.

Applications Of ASTM B338 Seamless and Welded Titanium and Titanium Alloy Tube

You'll find our tubes critical in coastal and nuclear power plant surface condensers utilizing seawater cooling. They solve steam-side erosion and water-side corrosion challenges.

In desalination plants, our tubes withstand high temperatures and brine concentrations in Multi-Stage Flash (MSF) distillation. Chloride attack resistance makes them indispensable for heat recovery sections.

Petrochemical facilities deploy them in shell-and-tube heat exchangers handling wet chlorine gas, nitric acid, and organic acids. Grades 7 and 16 prevent crevice corrosion in reducing acid environments, ensuring process safety.

Export Markets

We have shipped hundreds of thousands of tons to more than 60 nations. The Middle East, South America, and North America are the main markets.

CEFC, PTT, PDVSA, PETROECUADOR, PETRONAS, LUKOIL, and PEMEX are longstanding partners. Our products are used worldwide in the chemical processing, marine engineering, and oil and gas industries.

Why Choose Us

You benefit from direct mill supply with factory pricing and no middlemen. Our 200+ tons stock inventory enables immediate shipment for urgent projects.

Quotation responses arrive within 4 hours, and drawing reviews complete in 24 hours. Flexible MOQ supports trial orders starting from 100 kg.

In-house metallurgists provide technical consultation for material selection. Multilingual support in English, Chinese, Spanish, and Arabic ensures clear communication.

Packaging & Shipping

Protective plastic caps are placed on both ends of tubes. During transit, plywood containers or wooden crates offer export-standard protection.

Packing lists and heat number labels are included with every box. For urgent orders, we set up door-to-door delivery via air express or sea freight.

Commercial invoices, packing lists, origin certificates, and Mill Test Certificates (EN 10204 3.1) are examples of documentation. Upon request, SGS, BV, TÜV, DNV, or ABS may conduct a third-party inspection.

FAQ

Q: Should I go with welded or seamless tubes?

A: For the majority of heat exchanger applications, welded tubes provide improved wall thickness concentricity and cost-effectiveness. Ultra-high-pressure systems work well with seamless types.

Q: What makes Grade 2 different from Grade 7?

A: Grade 2 is effective in oxidizing conditions. When reducing acids above 80°C, Grade 7's 0.12–0.25% palladium significantly increases crevice corrosion resistance.

Q: Is heat treatment necessary?

A: Every tube is delivered in an annealed state. For microstructural stability, stress-relief is required following welding and cold forming.

Q: Is it possible to shape tubes into U-tubes?

A: Definitely. To avoid spring-back and residual stress corrosion, adhere to certain bend radius guidelines and use stress-relieving heat treatment.

Q: What paperwork is included with the shipment?

A: Mill Test Certificate (EN 10204 3.1) including mechanical test results, chemical composition, heat number, and NDT confirmation.

Request a Quote

Are you ready to enhance heat exchanger performance with seamless and ASTM B338 Seamless and Welded Titanium and Titanium Alloy Tube? Contact our engineering team at linhui@lhtitanium.com for technical specifications and competitive pricing. We respond within 4 hours.