API 6A/6B/6BX FLANGE STANDARD

API 6A – TYPE – 6B 13.8 MPA FLANGE DIMENSIONS (2000 PSI)

UNIT : mm

Size	B	OD	C (MAX.)	K	P	E	T	Q	X	BC	N	H	LN	HL	JL	Ring Number
																R or RX
2 1/16˝2 9/16˝3 1/8˝4 1/16˝5 1/8˝7 1/16˝ 9˝11˝13 5/8˝ 16 3/4˝ 21 1/4˝	53.2 65.9 81.8 108.7 131.0 181.8 229.4 280.2 346.9 426.2 540.5	165 190 210 275 330 355 420 510 560 685 815	33333666666	108 127 146 175 210 241 302 356 413 508 635	82.55 101.60 123.83 149.23 180.98 211.15 269.88 323.85 381.00 469.90 584.20	7.9 7.9 7.9 7.9 7.9 7.9 7.9 7.9 7.9 7.9 9.7	33.4 36.6 39.7 46.1 52.4 55.6 63.5 71.5 74.7 84.2 98.5	25.4 28.6 31.8 38.1 44.5 47.6 55.6 63.5 66.7 76.2 88.9	84 100 117 152 189 222 273 343 400 495 610	127 149.2 168.3 215.9 266.7 292.1 349.3 431.8 489 603.2 723.9	88888121216202024	2023232629293235354245	818891 110 122 126 141 160—	60.3 73.0 88.9 114.3 141.3 168.3 219.1 273.0 —	53.3 63.5 78.7 103.1 122.9 147.1 199.1 248.4 —	2326313741454953576573

NOTE : 1) TOLERANCE ACCORDING TO API 6A – 20TH 2) RING GASKET ACCORDING TO API 6A-20TH

API 6A – TYPE – 6B 20.7 MPA FLANGE DIMENSIONS (3000 PSI)

UNIT : mm

Size	B	OD	C (MAX.)	K	P	E	T	Q	X	BC	N	H	LN	HL	JL	Ring Number
																R or RX
2 1/16˝2 9/16˝3 1/8˝4 1/16˝5 1/8˝7 1/16˝9˝11˝13 5/8˝ 16 3/4˝ 20 3/4˝	53.2 65.9 81.8 108.7 131.0 181.8 229.4 280.2 346.9 426.2 527.8	215 245 240 290 350 380 470 545 610 705 855	33333666666	124 137 156 181 216 241 308 362 419 524 648	95.25 107.95 123.83 149.23 180.98 211.15 269.88 323.85 381.00 469.90 584.20	7.9 7.9 7.9 7.9 7.9 7.9 7.9 7.9 7.9 11.2 12.7	46.1 49.3 46.1 52.4 58.8 63.5 71.5 77.8 87.4 100.1 120.7	38.1 41.3 38.1 44.4 50.8 55.6 63.5 69.9 79.4 88.9 108	104.8 123.8 127.0 158.8 190.5 235.0 298.5 368.3 419.1 508.0 622.3	165.1 190.5 190.5 235.0 279.4 317.5 393.7 469.9 533.4 616.0 749.3	88888121216202020	2629263235323939394554	109.6 112.7 109.5 122.2 134.9 147.6 169.9 192.1 —	60.3 73.0 88.9 114.3 141.3 168.3 219.1 273 —	50.0 59.7 74.4 98.0 122.9 147.1 189.7 237.2 —	2427313741454953576674

NOTE : 1) TOLERANCE ACCORDING TO API 6A – 20TH 2)RING GASKET ACCORDING TO API 6A-20TH

API 6A – TYPE – 6B 34.5 MPA FLANGE DIMENSIONS (5000 PSI)

UNIT : mm

Size	B	OD	C (MAX.)	K	P	E	T	Q	X	BC	N	H	LN	HL	JL	Ring Number
																R or RX
2 1/16˝2 9/16˝3 1/8˝4 1/16˝5 1/8˝7 1/16˝ 9˝11˝	53.2 65.9 81.8 108.7 131.0 181.8 229.4 280.2	215 245 265 310 375 395 485 585	33333666	124 137 168 194 229 248 318 371	95.25 107.95 136.53 161.93 193.68 211.15 269.88 323.85	7.9 7.9 7.9 7.9 7.9 9.7 11.2 11.2	46.1 49.3 55.6 62 81 92.1 103.2 119.1	38.1 41.3 47.7 54 73.1 82.6 92.1 108	104.8 123.8 133.3 161.9 196.8 228.6 292.1 368.3	165.1 190.5 203.2 241.3 292.1 317.5 393.7 482.6	88888121212	26 29 32 35 42 39 45 51	109.5 112.7 125.4 131.8 163.5 181 223.8 265.1	60.3 73.0 88.9 114.3 141.3 168.3 219.1 273.1	43.7 54.9 67.5 88.1 110.3 132.6 173.8 216.7	2427353944465054

NOTE : 1) TOLERANCE ACCORDING TO API 6A – 20TH 2) RING GASKET ACCORDING TO API 6A-20TH

API 6A – TYPE – 6BX 13.8 MPA FLANGE DIMENSIONS (2000 PSI)

UNIT : mm

Size	OD	C	E1	G	K	T	J1	J4	R	BC	N	H	Ring Number
													BX
26 3/4˝ 30˝	1040 1120	66	21.423	768.33 862.3	805908	126.3 134.2	835.8 931.9	9.717.5	1616	952.5 1039.80	2032	4845	167303

NOTE : 1) TOLERANCE ACCORDING TO API 6A-20TH 2) RING GASKET ACCORDING TO API 6A-20TH

API 6A – TYPE – 6BX 20.7 MPA FLANGE DIMENSIONS (3000 PSI)

UNIT : mm

Size	OD	C	E1	G	K	T	J1	J4	R	BC	N	H	Ring Number
													BX
26 3/4˝ 30˝	1100 1185	66	21.423	774.22 862.30	832922	161.2 167.1	870970	012.7	1616	1000.10 1090.60	2432	5451	168303

NOTE : 1) TOLERANCE ACCORDING TO API 6A-20TH 2) RING GASKET ACCORDING TO API 6A-20^TH

API 6A – TYPE – 6BX 34.5 MPA FLANGE DIMENSIONS  (5000 PSI)

UNIT : mm

Size	OD	C	E1	G	K	T	J1	J4	R	BC	N	H	Ring Number
													BX
13 5/8˝	675	6	14.3	408.00	457	112.8	481.0	23.9	16	590.60	16	45	160
16 3/4˝	770	6	8.3	478.33	535	130.2	555.6	17.5	19	676.30	16	51	162
18 3/4˝	905	6	18.3	563.50	627	165.9	674.7	19.1	16	803.30	20	54	163
21 1/4˝	990	6	19.1	632.56	702	181.0	758.8	22.4	18	885.80	24	54	165

NOTE : 1) TOLERANCE ACCORDING TO API 6A-20TH 2) RING GASKET ACCORDING TO API 6A-20TH

API 6A – TYPE – 6BX 69.0 MPA FLANGE DIMENSIONS  (10000 PSI)

UNIT : mm

Size	B	OD	C	E1	Q (MAX.)	G	K	T	J1	J2	J3	J4	R	BC	N	H	Ring Number
																	BX
1 13/16˝	46.8	185	3	–	5.56	77.77	105	42.1	88.9	65.1	48.5	–	10	146.10	8	23	151
2 1/16˝	53.2	200	3	–	5.95	86.23	111	44.1	100.0	74.7	51.6	–	10	158.80	8	23	152
2 9/16˝	65.9	230	3	–	6.75	102.77	132	51.2	120.7	92.1	57.2	–	10	184.20	8	26	153
3 1/16˝	78.6	270	3	–	7.54	119.00	152	58.4	142.1	110.2	63.5	–	10	215.90	8	29	154
4 1/16˝	104.0	315	3	–	8.33	150.62	185	70.3	182.6	146.1	73.1	–	10	258.80	8	32	155
5 1/8˝	131.0	360	3	9.5	9.53	176.66	221	79.4	223.8	182.6	81.0	6.4	10	300.00	12	32	169
7 1/16˝	180.2	480	6	11.1	11.11	241.83	302	103.2	301.6	254.0	95.3	9.7	16	403.20	12	42	156
9 ˝	229.4	550	6	12.7	12.70	299.06	359	123.9	374.7	327.1	93.7	9.7	16	476.30	16	42	157
11˝	280.2	655	6	14.3	14.29	357.23	429	141.3	450.9	400.1	103.2	14.2	16	565.20	16	48	158
13 5/8˝	346.9	770	6	15.9	15.88	432.64	518	168.3	552.5	495.3	114.3	17.5	16	673.10	20	51	159
16 3/4˝	426.2	870	6	8.3	8.33	478.33	576	168.3	655.6	601.7	76.2	30.2	19	776.30	24	51	162
18 3/4˝	477.0	1040	6	18.3	18.26	577.90	697	223.1	752.5	674.7	155.6	25.4	16	925.50	24	61	164
21 1/4˝	540.5	1145	6	19.1	19.05	647.88	781	241.3	847.7	762.0	165.1	31.8	21	1022.40	24	67	166

NOTE : 1) TOLERANCE ACCORDING TO API 6A-20TH 2) RING GASKET ACCORDING TO API 6A-20TH

API 6A – TYPE – 6BX 103.5 MPA FLANGE DIMENSIONS  (15000 PSI)

Size	B	OD	C	E1	Q (MAX.)	G	K	T	J1	J2	J3	J4	R	BC	N	H	Ring Number
																	BX
1 13/16˝	46.8	210	3	–	5.56	77.77	106	45.3	97.6	71.4	47.6	–	10	160.3	8	26	151
2 1/16˝	53.2	220	3	–	5.95	86.23	114	50.8	111.1	82.5	54.0	–	10	174.60	8	26	152
2 9/16˝	65.9	255	3	–	6.75	102.77	133	57.2	128.6	100.0	57.1	–	10	200.00	8	29	153
3 1/16˝	78.6	290	3	–	7.54	119.00	154	64.3	154.0	122.2	63.5	–	10	230.20	8	32	154
4 1/16˝	104.0	360	3	–	8.33	150.62	194	78.6	195.3	158.7	73.0	–	10	290.50	8	39	155
5 1/8˝	131.0	420	3	9.5	9.53	176.66	225	98.5	244.5	200.0	81.8	6.4	16	342.90	12	42	169
7 1/16˝	180.2	505	6	11.1	11.11	241.83	305	119.1	325.4	276.2	92.1	7.9	16	428.60	16	42	156
9 ˝	229.4	650	6	12.7	12.70	299.06	381	146.1	431.8	349.2	123.8	14.2	16	552.40	16	51	157
11˝	280.2	815	6	14.3	14.29	357.23	454	187.4	584.2	427.0	235.7	12.7	16	711.20	20	54	158
13 5/8˝	346.9	885	6	15.9	15.88	432.64	541	204.8	595.3	528.6	114.3	17.5	25	771.50	20	61	159
18 3/4˝	477.0	1160	6	18.3	18.26	577.90	722	255.6	812.8	730.2	155.6	35.1	25	1016.00	20	80	164

NOTE : 1) TOLERANCE ACCORDING TO API 6A-20TH 2) RING GASKET ACCORDING TO API 6A-20TH

API 6A – TYPE – 6BX 138.0 MPA FLANGE DIMENSIONS (20000 PSI)

UNIT : mm

Size	B	OD	C	E1	Q (MAX.)	G	K	T	J1	J2	J3	J4	R	BC	N	H	Ring Number
																	BX
1 13/16˝	46.8	255	3	–	5.56	77.77	117	63.5	133.4	109.5	49.2	–	10	203.20	8	29	151
2 1/16˝	53.2	285	3	–	5.95	86.23	132	71.5	154.0	127.0	52.4	–	10	230.20	8	32	152
2 9/16˝	65.9	325	3	–	6.75	102.77	151	79.4	173.0	144.5	58.7	–	10	261.90	8	35	153
3 1/16˝	78.6	355	3	–	7.54	119.00	171	85.8	192.1	160.3	63.5	–	10	287.30	8	39	154
4 1/16˝	104.0	445	3	–	8.33	150.62	219	106.4	242.9	206.4	73.0	–	10	357.20	8	48	155
7 1/16˝	180.2	655	6	11.1	11.11	241.83	352	165.1	385.8	338.1	96.8	7.9	16	554.00	16	54	156
9 ˝	229.4	805	6	12.7	12.7	299.06	441	204.8	481.0	428.6	107.9	6.4	25	685.80	16	67	157
11˝	280.2	885	6	14.3	14.29	357.23	505	223.9	566.7	508.0	103.2	12.7	25	749.30	16	74	158
13 5/8˝	346.9	1160	6	15.9	15.88	432.64	614	292.1	693.7	628.6	133.3	14.2	25	1016.00	20	80	159

NOTE : 1) TOLERANCE ACCORDING TO API 6A-20TH 2) RING GASKET ACCORDING TO API 6A-20TH