Baoji Yinnly Titanium Co., Ltd. is one of the most reliable manufacturers and suppliers of titanium alloy stub end in China, featured by high quality customized products. If you're going to wholesale durable titanium alloy stub end made in China, welcome to get free sample from our factory. For price consultation, contact us.
Product Introduction
Titanium alloy stub end, also known as titanium lap joint stub end or titanium butt-welding ring, is a high-performance pipe fitting designed for flanged connections in piping systems. It features a short tubular body with one end flared (for flange mating) and the other end welded to the pipe, always used in conjunction with a lap joint flange (carbon steel or stainless steel) to reduce costs while ensuring the titanium wetted surface contacts corrosive media.
Material & Grades
Made from commercially pure titanium (CP Ti) and titanium alloys per ASTM B363, common grades include:
- Grade 2 (UNS R50400): CP Ti, excellent corrosion resistance, good strength and ductility, most widely used.
- Grade 5 (Ti-6Al-4V, UNS R56400): High strength, good heat resistance, for heavy-duty applications.
- Grade 7 (Ti-0.2Pd, UNS R52400): Superior corrosion resistance (especially in reducing acids), ideal for harsh chemical environments.
- Grade 12 (Ti-0.3Mo-0.8Ni): Good resistance to crevice corrosion in seawater and brines.
Standards & Dimensions
- Standards: ANSI/ASME B16.9, MSS-SP-43, ASTM B363 (material), ASTM B861 (seamless, ≤NPS 6), ASTM B265 (welded, >NPS 6).
- Patterns: Short pattern (ASME B16.9) and long pattern (ANSI).
Definition & Application
A Titanium Alloy Stub End is a short flange section welded to the end of a pipe, facilitating the assembly and maintenance of piping systems. It is usually mated with stainless steel or carbon steel flanges: the part of the piping in contact with the medium is made of titanium material, while the stainless steel flange only serves a fastening function without contacting the medium, thus significantly reducing costs.
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