Weldfit Corporation - API 6A Type 6B Flanges

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API 6A Type 6B Flanges

API 6A Type 6B Flanges

Class Size OD K T X BC Num of Bolts Bolt Hole Dia R/RX Ring Num

2,000 psi (130 bar) Working Pressure 2-1/6 6.50 4.25 1.31 3.31 5.00 8 0.75 23

2-9/16 7.50 5.00 1.44 3.94 5.88 8 0.88 26

3-1/8 8.25 5.75 1.56 4.62 6.62 8 0.88 31

4-1/16 10.75 6.88 1.81 6.00 8.50 8 1.00 37

5-1/8 13.00 8.25 2.06 7.44 10.50 8 1.12 41

7-1/16 14.00 9.50 2.19 8.75 11.50 12 1.12 45

9 16.50 11.88 2.50 10.75 13.75 12 1.25 49

11 20.00 14.00 2.81 13.50 17.00 16 1.38 53

13-5/8 22.00 16.25 2.94 15.75 19.25 20 1.38 57

16-3/4 27.00 20.00 3.31 19.50 23.75 20 1.62 65

21-1/4 32.00 25.00 3.88 24.00 28.50 24 1.75 73

Class Size OD K T X BC Num of Bolts Bolt Hole Dia R/RX Ring Num

3,000 psi (207 bar) Working Pressure 2-1/6 8.50 4.88 1.81 4.12 6.50 8 1.00 24

2-9/16 9.62 5.38 1.94 4.88 7.50 8 1.12 27

3-1/8 9.50 6.12 1.81 5.00 7.50 8 1.00 31

4-1/16 11.50 7.12 2.06 6.25 9.25 8 1.25 37

5-1/8 13.75 8.50 2.31 7.50 11.00 8 1.38 41

7-1/16 15.00 9.50 2.50 9.25 12.50 12 1.25 45

9 18.50 12.12 2.81 11.75 15.50 12 1.50 49

11 21.50 14.25 3.06 14.50 18.50 16 1.50 53

13-5/8 24.00 16.50 3.44 16.50 21.00 20 1.50 57

16-3/4 27.75 20.62 3.94 20.00 24.25 20 1.75 66

20-3/4 33.75 25.50 4.75 24.50 29.50 20 2.12 74

Class Size OD K T X BC Num of Bolts Bolt Hole Dia R/RX Ring Num

5,000 psi (345 bar) Working Pressure 2-1/16 8.50 4.88 1.81 4.12 6.50 8 1.00 24

2-9/16 9.62 5.38 1.94 4.88 7.50 8 1.12 27

3-1/8 10.50 6.62 2.19 5.25 8.00 8 1.25 35

4-1/16 12.25 7.62 2.44 6.38 9.50 8 1.38 39

5-1/8 14.75 9.00 3.19 7.75 11.50 8 1.62 44

7-1/16 15.50 9.75 3.62 9.00 12.50 12 1.50 46

9 19.00 12.50 4.06 11.50 15.50 12 1.75 50

11 23.00 14.63 4.69 14.50 19.00 12 2.00 54

API 6A Type 6BX Flanges

API 6A Type 6B Flanges

Class Size OD K T J BC Num of Bolts Bolt Hole Dia BX Ring Num

2,000 psi (130 bar) Working Pressure 26-3/4 41.00 31.69 4.97 32.91 37.50 20 1.88 167

30 44.19 35.75 5.28 36.69 40.94 32 1.75 303

Class Size OD K T J BC Num of Bolts Bolt Hole Dia BX Ring Num

3,000 psi (207 bar) Working Pressure 26-3/4 43.38 32.75 6.34 34.25 39.38 24 2.12 168

30 46.68 36.31 6.58 38.19 42.94 32 2.00 303

Class Size OD K T J BC Num of Bolts Bolt Hole Dia BX Ring Num

5,000 psi (345 bar) Working Pressure 13-5/8 26.50 18.00 4.44 18.94 23.25 16 1.75 160

16-3/4 30.38 21.06 5.13 21.88 26.62 16 2.00 162

18-3/4 35.62 24.69 6.53 26.56 31.62 20 2.12 163

21-1/4 39.00 27.62 7.12 29.88 34.88 24 2.12 165

Class Size OD K T J BC Num of Bolts Bolt Hole Dia BX Ring Num

10,000 psi (690 bar) Working Pressure 1-13/16 7.38 4.12 1.66 3.50 5.75 8 0.88 151

2-1/16 7.88 4.38 1.73 3.94 6.25 8 0.88 152

2-9/16 9.12 5.19 2.02 4.75 7.25 8 1.00 153

3-1/16 10.62 6.00 2.30 5.59 8.50 8 1.12 154

4-1/16 12.44 7.28 2.77 7.19 10.19 8 1.25 155

5-1/8 14.06 8.69 3.12 8.81 11.81 12 1.25 169

7-1/16 18.88 11.88 4.06 11.88 15.88 12 1.62 156

9 21.75 14.12 4.88 14.75 18.75 16 1.62 157

11 25.75 16.88 5.56 17.75 22.25 16 1.88 158

13-5/8 30.25 20.38 6.62 21.75 26.50 20 2.00 159

16-3/4 34.31 22.69 6.62 25.81 30.56 24 2.00 162

18-3/4 40.94 27.44 8.78 29.62 36.44 24 2.38 164

21-1/4 45.00 30.75 9.50 33.38 40.25 24 2.62 166

Class Size OD K T J BC Num of Bolts Bolt Hole Dia BX Ring Num

15,000 psi (1035 bar) Working Pressure 1-13/16 8.19 4.19 1.78 3.84 6.31 8 1.00 151

2-1/16 8.75 4.50 2.00 4.38 6.88 8 1.00 152

2-9/16 10.00 5.25 2.25 5.06 7.88 8 1.12 153

3-1/16 11.31 6.06 2.53 6.06 9.06 8 1.25 154

4-1/16 14.19 7.62 3.09 7.69 11.44 8 1.50 155

5-1/8 16.50 8.88 3.88 9.62 13.50 12 1.62 169

7-1/16 19.88 12.00 4.69 12.81 16.88 16 1.62 156

9 25.50 15.00 5.75 17.00 21.75 16 2.00 157

11 32.00 17.88 7.38 23.00 28.00 20 2.12 158

13-5/8 34.88 21.31 8.06 23.44 30.38 20 2.38 159

18-3/4 45.75 28.44 10.06 32.00 40.00 20 3.12 164

Class Size OD K T J BC Num of Bolts Bolt Hole Dia BX Ring Num

20,000 psi (1380 bar) Working Pressure 1-13/16 10.12 4.62 2.50 5.25 8.00 8 1.12 151

2-1/16 11.31 5.19 2.81 6.06 9.06 8 1.25 152

2-9/16 12.81 5.94 3.12 6.81 10.31 8 1.38 153

3-1/16 14.06 6.75 3.38 7.56 11.31 8 1.50 154

4-1/16 17.56 8.62 4.19 9.56 14.06 8 1.88 155

7-1/16 25.81 13.88 6.50 15.19 21.81 16 2.12 156

9 31.69 17.38 8.06 18.94 27.00 16 2.62 157

11 34.75 19.88 8.81 22.31 29.50 16 2.88 158

13-5/8 45.75 24.19 11.50 27.31 40.00 20 3.12 159

Class	Size	OD	K	T	X	BC	Num of Bolts	Bolt Hole Dia	R/RX Ring Num
2,000 psi (130 bar) Working Pressure	2-1/6	6.50	4.25	1.31	3.31	5.00	8	0.75	23
	2-9/16	7.50	5.00	1.44	3.94	5.88	8	0.88	26
	3-1/8	8.25	5.75	1.56	4.62	6.62	8	0.88	31
	4-1/16	10.75	6.88	1.81	6.00	8.50	8	1.00	37
	5-1/8	13.00	8.25	2.06	7.44	10.50	8	1.12	41
	7-1/16	14.00	9.50	2.19	8.75	11.50	12	1.12	45
	9	16.50	11.88	2.50	10.75	13.75	12	1.25	49
	11	20.00	14.00	2.81	13.50	17.00	16	1.38	53
	13-5/8	22.00	16.25	2.94	15.75	19.25	20	1.38	57
	16-3/4	27.00	20.00	3.31	19.50	23.75	20	1.62	65
	21-1/4	32.00	25.00	3.88	24.00	28.50	24	1.75	73
Class	Size	OD	K	T	X	BC	Num of Bolts	Bolt Hole Dia	R/RX Ring Num
3,000 psi (207 bar) Working Pressure	2-1/6	8.50	4.88	1.81	4.12	6.50	8	1.00	24
	2-9/16	9.62	5.38	1.94	4.88	7.50	8	1.12	27
	3-1/8	9.50	6.12	1.81	5.00	7.50	8	1.00	31
	4-1/16	11.50	7.12	2.06	6.25	9.25	8	1.25	37
	5-1/8	13.75	8.50	2.31	7.50	11.00	8	1.38	41
	7-1/16	15.00	9.50	2.50	9.25	12.50	12	1.25	45
	9	18.50	12.12	2.81	11.75	15.50	12	1.50	49
	11	21.50	14.25	3.06	14.50	18.50	16	1.50	53
	13-5/8	24.00	16.50	3.44	16.50	21.00	20	1.50	57
	16-3/4	27.75	20.62	3.94	20.00	24.25	20	1.75	66
	20-3/4	33.75	25.50	4.75	24.50	29.50	20	2.12	74
Class	Size	OD	K	T	X	BC	Num of Bolts	Bolt Hole Dia	R/RX Ring Num
5,000 psi (345 bar) Working Pressure	2-1/16	8.50	4.88	1.81	4.12	6.50	8	1.00	24
	2-9/16	9.62	5.38	1.94	4.88	7.50	8	1.12	27
	3-1/8	10.50	6.62	2.19	5.25	8.00	8	1.25	35
	4-1/16	12.25	7.62	2.44	6.38	9.50	8	1.38	39
	5-1/8	14.75	9.00	3.19	7.75	11.50	8	1.62	44
	7-1/16	15.50	9.75	3.62	9.00	12.50	12	1.50	46
	9	19.00	12.50	4.06	11.50	15.50	12	1.75	50
	11	23.00	14.63	4.69	14.50	19.00	12	2.00	54