Product Name Titanium??flanges
Material Grade:TA1(GR1),TA2(GR2),TA3(GR3),TA7(GR6),TA9(GR7),TA10(GR12),TA18(GR9), TC4(GR 5),TC4EL(GR23 )
Pressure rate 2000 pounds, 3000 pounds, 6000 pounds, 9,000 pounds
Pressure range PN16-PN150
Process Titanium sponge-Titanium ingot-?forging, casting, cutting and rolling
Test U/T 100%, Surface check 100%
Size Number of bolt holes: 4-48
Thread pattern :M10-M27
Flange outer diameter :75mm-2190mm
Material advantages Low density; high specific strength; acid, alkali, salt, seawater corrosion; superior mechanical properties
Used Used in petroleum equipment, chemical equipment, sports equipment, automobile manufacturing, medical equipment, tools



1.Titanium flange classification
. According to the chemical industry (HG) industry standard: integral flange (IF), threaded flange (Th), plate flat welding flange (PL), necked butt welding flange (WN), necked flat welding flange (SO), socket welding flange (SW), butt welding ring loose sleeve flange (PJ / SE), flat welding ring loose sleeve flange (PJ / RJ), lining flange cover (BL (S)), Flange cover (BL) [2].
2. According to the petrochemical (SH) industry standard: threaded flange (PT), butt-welded flange (WN), flat-welded flange (SO), socket-welded flange (SW), loose sleeve flange (LJ) Flange cover (not shown).
3. According to the mechanical (JB) industry standard: integral flange, butt welding flange, plate flat welding flange, butt welding ring plate loose sleeve flange, flat welding ring plate loose sleeve flange, flange ring plate loose sleeve Flange, flange cover.
4. According to national (GB) standards: integral flanges, threaded flanges, butt welding flanges, flat welding flanges with necks, socket welding flanges with necks, loose flanges with necks, butt flanges Welding flange, butt welding ring plate loose sleeve flange, flat welding ring plate loose sleeve flange, flange ring plate loose sleeve flange, flange cover.
2.Material
Titanium and titanium alloy grades and chemical composition
Grade Main ingredients Impurities, not more than
Ti Al V Zr Si Cr Fe Pd Mo Ni Fe C N H O Other
TA1/GR1 margin / / / / / / / / / 0.15 0.10 0.03 0.015 0.15 0.4
TA2/GR2 margin / / / / / / / / / 0.25 0.10 0.03 0.015 0.20 0.4
TA3/GR3 margin / / / / / / / / / 0.30 0.1 0.05 0.015 0.25 0.4
TA9/GR7 margin / / / / / / 0.12-0.25 / / 0.30 0.08 0.03 0.015 0.25 0.40
TA9-1/GR7 margin / / / / / / 0.12-0.25 / / 0.20 0.08 0.03 0.015 0.18 0.40
TA10/GR12 margin / / / / / / / 0.2-0.4 0.6-0.9 0.30 0.08 0.03 0.015 0.25 0.4
TA18/GR9 margin 2.0-3.5 1.5-3.0 / / / / / / / 0.25 0.08 0.05 0.015 0.12 0.3
TC4 margin 5.5-6.5 3.5-4.5 / / / / / / / 0.30 0.08 0.05 0.015 0.20 0.40
TC11 margin 5.8-7.0 / 0.8-2.0 0.2-0.35 / / / 2.8-3.8 / 0.25 0.08 0.05 0.012 0.15 0.40
TC18 margin 5 4.75 / / 1.0 1.0 / 4.75 /
3.Mechanical behavior
Grade Nominal chemical composition Status Tensile Strength
Rm/MPa Yield Strength
Rp0.2/MPa Elongation
A50MM/%

TA1/GR1 Industrial pure titanium M =240 140-310 =24
TA2/GR2 Industrial pure titanium M =400 275-450 =20
TA3/GR3 Industrial pure titanium M =500 380-550 =18
TA9/GR7 Ti-0.2Pd M =400 275-450 =20
TA9-1/GR7 Ti-0.2Pd M =240 140-310 =24
TA10/GR12 Ti-0.3Mo-0.8Ni M =460 =300 =18
TA18/GR9 Ti-3Al-2V M / / /
TC4 Ti-6Al-4V M =895 =825 =10
TC11 Ti-6.5Al-3.5Mo-1.5Zr-0.3Si M =1030 =900 =10
TC18 Ti-5Al-4.75Mo-4.75V-1Cr-1Fe M / / /

4.skills requirement
1. the level of butt welding flange and its technical requirements shall meet the corresponding requirements of JB4726-4728. 1. Carbon steel and austenitic stainless steel forgings with a nominal pressure PN of 0.25MP-1.0MPa are allowed to use Grade I forgings.
2. Except for the following requirements, forgings with nominal pressure PN of 1.6MPa-6.3MPa shall meet the requirements of Grade ? or above grade forgings.
3. Those who meet one of the following conditions shall meet the requirements of III and forgings: (1) forgings for flanges with nominal pressure PN = 10.0MPa; (2) chrome-molybdenum steel forgings with PN> 4.0MPa; Ferritic steel forgings with pressure PN> 1.6MPa and working temperature =-20 degrees Celsius.
Second, butt welding flanges are generally made by forging or forging. When using steel plates or sections, the following requirements must be met:
5.Processing technology

1. Butt-welded flanges should be ultrasonically inspected without layering defects;
2. It should be cut into strips along the rolling direction of the steel, bent and welded into a ring, and the surface of the steel should form a circular cylindrical surface. It is not allowed to machine the steel plate directly into a butt-welded flange with a neck;
3. The butt welds of the ring shall be full penetration welds;
4. The butt welds of the ring shall be heat treated after welding and 100% ray or ultrasonic inspection shall be performed, and the ray inspection shall meet the Class II requirements of JB4730, and the ultrasonic inspection shall meet the Class I requirements of JB4730.
5.the outer slope of the neck of the butt welding flange should not be greater than 70 °. Butt welding flanges strictly control technical parameters during production and welding to ensure that they can fully play their role and value in production and use.
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