Add strength and durability to your piping system with a QiYueXin pipe flange. Manufactured in titanium grades 2 or 7 and zirconium grade 702, our flanges include: threaded, slip-on, reducing, blind, weld neck, socket weld and lap joint. We carry an extensive selection of sizes and styles ranging from 1/2” to 8” in diameter. All of our zirconium and titanium flanges are manufactured to the specifications. 
 
Contact us to request a quote.

Dimensions

Blind Flanges*

 
NOMINAL 
PIPE SIZE
OUTSIDE
DIA.
THICKNESS DIA. OF 
RAISED FACE
NUMBER OF
HOLES
DIA. OF
BOLTS +
DIA. OF
BOLT CIRCLE
  Ø Q R      
1/2 3-1/2 7/16 1-3/8 4 1/2 2-3/8
3/4 3-7/8 1/2 1-11/16 4 1/2 2-3/4
1 4-1/4 9/16 2 4 1/2 3-1/8
1-1/4 4-5/8 5/8 2-1/2 4 1/2 3-1/2
1-1/2 5 11/16 2-7/8 4 1/2 3-7/8
2 6 3/4 3-5/8 4 5/8 4-3/4
2-1/2 7 7/8 4-1/8 4 5/8 5-1/2
3 7-1/2 15/16 5 4 5/8 6
3-1/2 8-1/2 15/16 5-1/2 8 5/8 7
4 9 15/16 6-3/16 8 5/8 7-1/2
5 10 15/16 7-5/16 8 3/4 8-1/2
6 11 1 8-1/2 8 3/4 9-1/2
8 13-1/2 1-1/8 10-5/8 8 3/4 11-3/4
10 16 1-3/16 12-3/4 12 7/8 14-1/4
12 19 1-1/4 15 12 7/8 17
14 21 1-3/8 16-1/4 12 1 18-3/4
16 23-1/2 1-7/16 18-1/2 16 1 21-1/4
18 25 1-9/16 21 16 1-1/8 22-3/4
20 27-1/2 1-11/16 23 20 1-1/8 25
24 32 1-7/8 27-1/4 20 1-1/4 29-1/2
 
* When ordering specify nominal pipe size or "O" dimension in inches indicating which is being used, pressure rating of flange and part number.
** The 1/16" raised face is included in Thickness "Q."
+ Bolt holes are 1/8" larger than bolt diameters.
• These lengths include thickness of two nuts but not height of crown.
(Flanges are supplied to ASTM B381)

Slip-on Flanges

 
NOMINAL 
PIPE SIZE
OUTSIDE
DIA.
THICKNESS DIA. OF 
RAISED FACE
DIA. OF HUB AT BASE LENGTH
OF HUB
DIA. OF BORE NUMBER OF
HOLES
DIA. OF
BOLTS+
DIA. OF
BOLT CIRCLE
  Ø Q R X Y W      
1/2 3-1/2 7/16 1-3/8 1-3/16 5/8 0.88 4 1/2 2-3/8
3/4 3-7/8 1/2 1-11/16 1-1/2 5/8 1.09 4 1/2 2-3/4
1 4-1/4 9/16 2 1-5/16 11/16 1.36 4 1/2 3-1/8
1-1/4 4-5/8 5/8 2-1/2 2-5/16 13/16 1.70 4 1/2 3-1/2
1-1/2 5 11/16 2-7/8 2-9/16 7/8 1.95 4 1/2 3-7/8
2 6 3/4 3-5/8 3-1/16 1 2.44 4 5/8 4-3/4
2-1/2 7 7/8 4-1/8 3-9/16 1-1/8 2.94 4 5/8 5-1/2
3 7-1/2 15/16 5 4-1/4 1-3/16 3.57 4 5/8 6
3-1/2 8-1/2 15/16 5-1/2 4-13/16 1-1/4 4.07 8 5/8 7
4 9 15/16 6-3/16 5-5/16 1-5/16 4.57 8 5/8 7-1/2
5 10 15/16 7-5/16 6-7/16 1-7/16 5.66 8 3/4 8-1/2
6 11 1 8-1/2 7-9/16 1-9/16 6.72 8 3/4 9-1/2
8 13-1/2 1-1/8 10-5/8 9-11/16 1-3/4 8.72 8 3/4 11-3/4
10 16 1-3/16 12-3/4 12 1-15/16 10.88 12 7/8 14-1/4
12 19 1-1/4 15 14-3/8 2-3/16 12.88 12 7/8 17
14 21 1-3/8 16-1/4 15-3/4 2-1/4 14.14 12 1 18-3/4
16 23-1/2 1-7/16 18-1/2 18 2-1/2 16.16 16 1 21-1/4
18 25 1-9/16 21 19-7/8 2-11/16 18.18 16 1-1/8 22-3/4
20 27-1/2 1-11/16 23 22 2-7/8 20.20 20 1-1/8 25
24 32 1-7/8 27-1/4 26-1/8 3-1/4 24.25 20 1-1/4 29-1/2
** The 1/16" raised face is included in Thickness "Q" and Length "Y."
+ Bolt holes are 1/8" larger than bolt diameters.
• These lengths include thickness of two nuts but not height of crown.
(Flanges are supplied to ASTM B381)

Weld Neck Dimensions

 
 
 
 

NOMINAL 
PIPE SIZE
OUTSIDE
DIA.
THICKNESS DIA. OF 
RAISED FACE
DIA. OF HUB AT BASE MIN. DIA. OF HUB AT POINT OF WELDING LENGTH
OF HUB
DIA. OF BORE NUMBER OF
HOLES
DIA. OF
BOLTS+
DIA. OF
BOLT CIRCLE
  Ø Q R X H Y J      
1/2 3-1/2 7/16 1-3/8 1-3/16 0.84 1-7/8 0.62 4 1/2 2-3/8
3/4 3-7/8 1/2 1-11/16 1-1/2 1.05 2-1/16 0.82 4 1/2 2-3/4
1 4-1/4 9/16 2 1-5/16 1.32 2-3/16 1.05 4 1/2 3-1/8
1-1/4 4-5/8 5/8 2-1/2 2-5/16 1.66 2-1/4 1.38 4 1/2 3-1/2
1-1/2 5 11/16 2-7/8 2-9/16 1.90 2-7/16 1.61 4 1/2 3-7/8
2 6 3/4 3-5/8 3-1/16 2.38 2-1/2 2.07 4 5/8 4-3/4
2-1/2 7 7/8 4-1/8 3-9/16 2.88 2-3/4 2.47 4 5/8 5-1/2
3 7-1/2 15/16 5 4-1/4 3.50 2-3/4 3.07 4 5/8 6
3-1/2 8-1/2 15/16 5-1/2 4-13/16 4.00 2-13/16 3.55 8 5/8 7
4 9 15/16 6-3/16 5-5/16 4.50 3 4.03 8 5/8 7-1/2
5 10 15/16 7-5/16 6-7/16 5.56 3-1/2 5.05 8 3/4 8-1/2
6 11 1 8-1/2 7-9/16 6.63

ADDRESS:WENQUAN VILLAGE INDUSTRIAL PARK, BAOTAI ROAD, BAOJI CITY, SHAANXI PROVINCE, CHINA