Usually, titanium stub ends are used with ASME B16.5 carbon steel backing flanges (lap joint flanges) in pipeline to minimize the cost while maintaining excellent corrosion resistance to fluid. The stub ends may be furnished in short pattern or long pattern in accordance with ASME B16.9. The material covers Grade 1, Grade 2, Grade 3, Grade 5, Grade 7, Grade 9, Grade 12, Grade 16 titanium and its alloys, which shall be made in accordance with ASTM B363. For sizes NPS 6 and smaller, the titanium stub ends will be furnished in seamless type (ASTM B861); for sizes larger than NPS 6, the titanium stub ends will be furnished in welded type (ASTM B265). Application of titanium stub ends: pulp and paper industry, water and seawater service, chemical processes involving oxidizing media and oxidizing acids.

Drawings & Dimensions for Titanium Stub Ends

Nominal Size	Outside Diameter of Barrel		Long Pattern Length, F	Short Pattern Length, F	Radius of Fillet, R	Diameter of Lap, G
NPS	Max. mm. in.	Min. mm. in.	mm. in.	mm. in.	mm. in.	mm. in.
1/2	22.8 0.896	20.5 0.809	76 3.00	51 2.00	3 0.12	35 1.38
3/4	28.1 1.106	25.9 1.019	76 3.00	51 2.00	3 0.12	43 1.69
1	35.0 1.376	32.6 1.284	102 4.00	51 2.00	3 0.12	51 2.00
1 1/4	43.6 1.716	41.4 1.629	102 4.00	51 2.00	5 0.19	64 2.50
1 1/2	49.9 1.965	47.5 1.869	102 4.00	51 2.00	6 0.25	73 2.88
2	62.4 2.456	59.5 2.344	152 6.00	64 2.50	8 0.31	92 3.62
2 1/2	75.3 2.966	72.2 2.844	152 6.00	64 2.50	8 0.31	105 4.12
3	91.3 3.596	88.1 3.469	152 6.00	64 2.50	10 0.38	127 5.00
3 1/2	104.0 4.096	100.8 3.969	152 6.00	76 3.00	10 0.38	140 5.50
4	116.7 4.593	113.5 4.469	152 6.00	76 3.00	11 0.44	157 6.19
5	144.3 5.683	140.5 5.532	203 8.00	76 3.00	11 0.44	186 7.31
6	171.3 6.743	167.5 6.594	203 8.00	89 3.50	13 0.50	216 8.50
8	222.1 8.743	218.3 8.594	203 8.00	102 4.00	13 0.50	270 10.62
10	277.2 10.913	272.3 10.719	254 10.00	127 5.00	13 0.50	324 12.75
12	328.0 12.913	323.1 12.719	254 10.00	152 6.00	13 0.50	381 15.00
14	359.9 14.170	354.8 13.969	305 12.00	152 6.00	13 0.50	413 16.25
16	411.0 16.180	405.6 15.969	305 12.00	152 6.00	13 0.50	470 18.50
18	462.0 18.190	456.0 17.969	305 12.00	152 6.00	13 0.50	533 21.00
20	514.0 20.240	507.0 19.969	305 12.00	152 6.00	13 0.50	584 23.00
22	565.0 22.240	558.0 21.969	305 12.00	152 6.00	13 0.50	641 25.25
24	616.0 24.240	609.0 23.969	305 12.00	152 6.00	13 0.50	692 27.25

*Dimensions are presented with both metric and US Customary units.
*Gasket face finish shall be in accordance with ASME B16.5 for raised face flanges.
*The lap thickness, T, shall not be less than nominal pipe wall thickness.
*Short pattern titanium stub ends are applicable for ASME B16.5 flanges of 300#, 600#, and 900#.
*Long pattern titanium stub ends are applicable for AMSE B16.5 flanges of 1500# and 2500#.
*Custom-designed titanium stub ends can be manufactured upon request.