Titanium Cap — Export Supply from Baoji Titanium Valley

Product Overview

Reviewed and maintained by the Engineering Team, Shaanxi Qianyi Tuoda Technology Co., Ltd.

Titanium Cap — Export Supply from Baoji Titanium Valley

A titanium cap seals the end of a corrosion-resistant line. We stock pipe end caps in Gr2 and Gr7, ASTM B363, butt-weld, for seawater and chemical piping. Grade 2 for neutral chloride; Grade 7 for reducing or acidic service.

At a Glance: Titanium Cap

Titanium Cap	At a Glance
Type	Pipe end cap
Grades	Gr2, Gr7
Standard	ASTM B363
Joint	Butt-weld
Use	Line termination, spares
Dispatch	Stock + custom

1. What Titanium Cap Is and Where It Is Used

Titanium Cap is specified wherever stainless steel fails by corrosion but the part must stay light, strong, or biocompatible. Typical uses:

• Terminating desalination fittings seawater lines
• Gr2 fittings chemical line ends
• heat-exchanger fittings exchanger nozzles and spares
• Blanking unused take-offs offshore
• Test-package end seals

2. Grade Selection

: Which Titanium to Specify

Grade 2 caps — within Gr2 fittings — suit seawater and neutral chloride. Grade 7 — Gr7 corrosive fittings — for corrosive, reducing media. Butt-weld per tee/elbow/reducer stock for a leak-tight seal.

3. Standards and Dimensions to State on the RFQ

State the governing standard, dimensions, and tolerance up front so quotes are comparable. For Titanium Cap this is usually the relevant ASTM/ASME grade plus your drawing or nominal size. Insist on mill-test certification with heat-number traceability.

4. Titanium Cap in Seawater and Chloride Service

For open, aerated seawater Grade 2 is the default; where the service is reducing, acidic, or has stagnant/creviced zones, step up to Grade 7 (Ti-0.15Pd). Keep flow velocity in the 1–2 m/s band to prevent deposit-driven crevice attack. Related reading: seawater desalination plate and Grade 7 seawater exchanger.

5. The Limitation You Must Know

: Where Titanium Cap Fails

A capped end is a classic stagnation/crevice spot — in low-oxygen chloride prefer Gr7 and avoid leaving it full of trapped, oxygen-starved fluid long-term. Exclusions unchanged: no dry halogen, no concentrated nitric, no fluoride. Avoid galvanic coupling to steel without insulation.

6. Sizing and Specification Checklist (RFQ-Ready)

1. Grade and temper (Gr2 / Gr5 / Gr7 / Gr12 / Gr23) with the reason above.
2. Dimensions — size, thickness/OD, length, or bore as applicable.
3. Standard (ASTM/ASME/EN) and tolerance class.
4. Quantity and lot — single piece or batch.
5. Surface finish — pickled, polished, machined, or as-rolled.
6. Certificate — EN 10204 3.1 with heat number.
7. NDT requirement — RT/PT/ET where the code demands it.
8. Packing and destination — export packing and freight.
9. Nominal bore and wall schedule
10. Butt-weld end prep

7. Common Procurement Mistakes

• Leaving a capped leg full of stagnant low-oxygen fluid (crevice risk)
• Gr2 in reducing/acidic line (use Gr7)
• Galvanic coupling to steel without insulation

8. Why a Titanium Cap, Not a Steel Plug

A steel plug in a titanium line invites galvanic corrosion at the junction. A tee/elbow/reducer stock-standard titanium cap keeps the whole bore one material, butt-welded for a permanent, corrosion-free seal — ideal for spares and abandonment.

9. Why Buy From a Baoji Titanium-Valley Stockist

We hold ~800 tons of titanium and nickel inventory in Baoji, China’s Titanium Valley, and cut to size the same day. That means small MOQ, fast dispatch, and the ability to supply both standard stock and non-standard parts to drawing — without a minimum-lot penalty. Every lot ships with MTC and export documentation.

10. Related Products and Where to Click Next

tee/elbow/reducer stock · Gr2 fittings · Gr7 corrosive fittings · butt-weld to spec · small-batch fittings

11. FAQ — Titanium Cap

What titanium caps do you stock?

Butt-weld pipe end caps in Gr2 and Gr7, ASTM B363, stock and custom.

Which grade for seawater?

Grade 2 for open seawater; Grade 7 for reducing or stagnant service.

Why not a steel plug?

A steel plug causes galvanic corrosion at the junction; a titanium cap keeps one material.

Are they butt-weld?

Yes — per ASTM B363 / B16.9.

Can you make non-standard caps?

Yes — fabricated to spec, including small batches.

What certification?

EN 10204 3.1 MTC; NDT where specified.

Do you export?

Yes — worldwide from Baoji.

Summary: Choose by Service, Not by Habit

Choose Gr2 cap if seawater or neutral chloride. Choose Gr7 if reducing/acidic or stagnant line. Choose titanium (not steel) if the line is titanium to avoid galvanic corrosion.

Send the checklist above to [email protected] or use the inquiry form — we confirm stock and pricing within 24 hours.