Weld Neck Flange 12" Cl. 300 DN300 Bw Buttweld RF Pipe Flange Cdfl867

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PN 0.6pa (6 pressure) flat welded steel pipe flange(PL - RF)

Norminal Diameter	Pipe Outside Diameter		Link Size					Seal Surface Size		Flange Thickness	Flange Inside Diameter B1		Groove Width	Approx Weight
Norminal Diameter	A1		Flange outer diameter	Diameter of center circle of bolt hole	Diameter of bolt hole	Number of bolt holes	thread	Seal Surface Size		Flange Thickness	Flange Inside Diameter B1		Groove Width	Approx Weight
DN	A	B	D	K	L	n	Th	d	f	C	A	B	b	(Kg)
10	17.2	14	75	50	12	4	M10	32	2	12	18	15	3	0.32
15	21.3	18	80	55	12	4	M10	40	2	12	22	19	3	0.34
20	26.9	25	90	65	12	4	M10	50	2	14	27.5	26	3	0.54
25	33.7	32	100	75	12	4	M10	60	2	14	34.5	33	4	0.64
32	42.4	38	120	90	14	4	M12	70	2	16	43.5	39	4	1.10
40	48.3	45	130	100	14	4	M12	80	3	16	49.5	46	4	1.22
50	60.3	57	140	110	14	4	M12	90	3	16	61.5	59	4	1.35
65	76.1	76	160	130	14	4	M12	110	3	16	77.5	78	5	1.67
80	88.9	89	190/185	150	18	8	M16	125	3	18	90.5	91	5	2.48
100	114.3	108	210/205	170	18	8	M16	145	3	18	116	110	5	2.89
125	139.7	133	240/235	200	18	8	M16	175	3	20	141.5	135	5	3.94
150	168.3	159	265/260	225	18	8	M16	200	3	20	170.5	161	5	4.47
175		194	290	255	18	8	M16	230	3	22		196	6	5.54
200	219.1	219	32Q/315	280	18	12	M16	255	3	22	221.5	222	7	6.07
225		245	340	305	18	12	M16	280	3	22		248	8	6.60
250	273	273	375/370	335	18	12	M16	310	3	24	276.5	276	9	8.03
300	323.9	325	440/435	395	22/23	12	M20	362	4	24	327.5	328	9	10.30
350	355.6	377	490/485	445	22/23	16	M20	412	4	26	359.5	380	10	12.59
400	406.4	426	540/535	495	22/23	16	M20	462	4	28	411	430	10	15.20
450	457	480	595/590	550	22/23	20	M20	518	4	28	462	484	10	17.59
500	508	530	645/640	600	22/23	20	M20	568	4	30	513.5	534	10	20.67reference
600	610	630	755	705	26/25	20	M24/M22	670	5	30	616.5	634	10	26.57
700	711	720	860	810	26/25	24	M24/M22	775	5	32	715	724	10	37.1
800	813	820	975	920	30	24	M27	880	5	32	817	824	10	46.2
900	914	920	1075	1020	30	28	M27	980	5	34	918	924	10	55.1
1000	1016	1020	1175	1120	30	28	M27	1080	5	36	1020	1024	10	64.36
1100		1120	1305	1240	33	32	M30	1195	5	30		1124	12	70 reference
1200	1219	1220	1405/1400	1340	33/34	32	M30	1295	5	30	1223	1224	12	73 reference
1300		1320	1520	1450	36	32	M33	1400	5	30		1324	12	80 reference
1400	1422	1420	1630/1620	1560	36/34	36	M33/M30	1510	5	34	1426	1424	14	105reference
1500		1520	1730	1660	36	36	M33	1610	5	34		1524	14	115reference
1600	1626	1620	1830/1820	1760	36/34	40	M33/M30	1710	5	36	1630	1624	16	125reference
1750			1995	1920	42	44	M36	1860	5	36			16	155reference
1800	1829	1820	2045	1970	39/42	44	M36	1920	5	38	1833	1824	17	170reference
2000	2032	2020	2265	2180	42/48	48	M39/M42	2125	5	38	2026	2024	18	210reference
2200		2220	2475	2390	42	52	M39	2335	6	40		2224	20	240reference
2400		2420	2685	2600	42	56	M39	2545	6	42		2424	22	300reference

Special flange for elastic butterfly valve, wafer butterfly valve (D371) and wafer check valve (H76)

PN 1.0MPa (10 pressure) flat welded steel pipe flange(PL -RF)

Norminal Diameter	Pipe Outside Diameter		Link Size					Seal Surface Size		Flange Thickness	Flange Inside Diameter B1		Groove Width	Approx Weight
Norminal Diameter	A1		Flange outer diameter	Diameter of center circle of bolt hole	Diameter of bolt hole	Number of bolt holes	thread	Seal Surface Size		Flange Thickness	Flange Inside Diameter B1		Groove Width	Approx Weight
DN	A	B	D	K	L	n	Th	d	f	C	A	B	b	(Kg)
10	17.2	14	90	60	14	4	M12	40	2	12	18	15	3	0.46
15	21.3	18	95	65	14	4	M12	45	2	12	22	19	3	0.51
20	26.9	25	105	75	14	4	M12	55	2	14	27.5	26	3	0.75
25	33.7	32	115	85	14	4	M12	65	2	14	34.5	33	4	0.89
32	42.4	38	140/135	100	18	4	M16	78	2	16	43.5	39	4	1.40
40	48.3	45	150/145	110	18	4	M16	85	3	18	49.5	46	4	1.71
50	60.3	57	165/160	125	18	4	M16	100	3	18	61.5	59	4	2.09
65	76.1	76	185/180	145	18	4	M16	120	3	20	77.5	78	5	2.84
80	88.9	89	200/195	160	18	8	M16	135	3	20	90.5	91	5	3.24 reference
100	114.3	108	220/215	180	18	8	M16	155	3	22	116	110	5	4.01
125	139.7	133	25Q/245	210	18	8	M16	185	3	24	141.5	135	5	5.40
150	168.3	159	285/280	240	22/23	8	M20	210	3	24	170.5	161	5	6.67
175		194	310	270	22/23	8	M20	240	3	24		196	6	7.44
200	219.1	219	340/335	295	22/23	12	M20	265	3	24	221.5	222	7	8.24
225		245	365	325	22/23	12	M20	295	3	24		248	8	9.30
250	273	273	405	355	22/23	12	M20	320	3	26	276.5	276	9	10.7
300	323.9	325	460	410	22/23	12	M20	375	4	28	327.5	328	9	12.9
350	355.6	377	520	470	22/23	16	M20	436	4	28	359.5	380	10	15.9
400	406.4	426	580	525	26/25	16	M24/M22	485	4	30	411	430	10	21.8
450	457	480	640	585	26/25	20	M24/M22	545	4	30	462	484	10	24.4
500	508	530	715/705	650	26/25	20	M24/M22	608	4	32	513.5	534	10	27.7
600	610	630	840	770	30	20	M27	718	5	36	616.5	634	10	39.4
700	711	720	910	840	30	24	M27	788	5	36	715	724	10	53
800	813	820	1025/1020	950	34	24	M30	898	5	38	817	824	10	67
900	914	920	1125/1120	1050	34	28	M30	998	5	38	918	924	10	76 reference resources
1000	1016	1020	1255	1170	36/34	28	M33/M30	1110	5	38	1020	1024	10	90 reference
1100		1120	1355	1270	36	32	M33	1215	5	42		1124	12	125 reference
1200	1219	1220	1485	1390	39/41	32	M36	1325	5	44	1223	1224	12	143 reference
1300		1320	1585	1490	41	32	M36	1425	5	46		1324	12	180 reference
1400	1422	1420	1685	1590	42/48	36	M39/M42	1525	5	48	1426	1424	14	195 reference
1500		1520	1820	1710	48	36	M42	1640	5	50		1524	14	225 reference
1600	1626	1620	1930	1820	48/54	40	M45/M48	1750	5	52	1630	1624	16	275 reference
1750			2080	1970	54	44	M48	1900	5	54			16	310 reference
1800	1829	1820	2130	2020	48/54	44	M45/M48	1950	5	56	1833	1824	17	340 reference
2000	2032	2020	2345	2230	48/54	48	M45/M48	2150	5	60	2036	2024	18	420 reference
2200		2220	2555	2440	56	52	M52	2370	6	80		2224	20	660 reference
2400		2420	2765	2650	56	56	M52	2570	6	90		2424	20	840 reference

PN 1.6MPa (16 pressure) flat welded steel pipe flange(PL -RF)

Norminal Diameter	Pipe Outside Diameter		Link Sice					Seal Surface Size		Flange Thickness	Flange Inside Diameter B1		Groove Width	Approx Weight
Norminal Diameter	A1		Flange outer diameter	Diameter of center circle of bolt hole	Diameter of bolt hole	Number of bolt holes	thread	Seal Surface Size		Flange Thickness	Flange Inside Diameter B1		Groove Width	Approx Weight
DN	A	B	D	K	L	n	Th	d	f	C	A	B	b	(Kg)
10	17.2	14	90	60	14	4	M12	40	2	14	18	15	3	0.55
15	21.3	18	95	65	14	4	M12	45	2	14	22	19	3	0.71
20	26.9	25	105	75	14	4	M12	55	2	16	27.5	26	3	0.87
25	33.7	32	115	85	14	4	M12	65	2	18	34.5	33	4	1.18
32	42.4	38	140/135	100	18	4	M16	78	2	18	43.5	39	4	1.60
40	48.3	45	150/145	110	18	4	M16	85	3	20	49.5	46	4	2.00
50	60.3	57	165/160	125	18	4	M16	100	3	22	61.5	59	4	2.61
65	76.1	76	185/180	145	18	4	M16	120	3	24	77.5	78	5	3.45
80	88.9	89	200/195	160	18	8	M16	135	3	24	90.5	91	5	3.71
100	114.3	108	220/215	180	18	8	M16	155	3	26	116	110	5	4.80
125	139.7	133	25Q/245	210	18	8	M16	185	3	28	141.5	135	5	6.47
150	168.3	159	285/280	240	22/23	8	M20	210	3	28	170.5	161	5	7.92
175		194	310	270	22/23	8	M20	240	3	28		196	6	8.81
200	219.1	219	34QZ335	295	22/23	12	M20	265	3	30	221.5	222	7	10.10
225		245	365	325	22/23	12	M20	295	3	30		248	8	11.20
250	273	273	405	355	26/25	12	M24/M22	320	3	32	276.5	276	9	15.70
300	323.9	325	460	410	26/25	12	M24^M22	375	4	32	327.5	328	9	18.10
350	355.6	377	520	470	26/25	16	M24/M22	436	4	34	359.5	380	10	23.30
400	406.4	426	580	525	30	16	M27	485	4	38	411	430	10	31.00
450	457	480	640	585	30	20	M27	545	4	42	462	484	10	40.20
500	508	530	715/705	650	34	20	M30	608	4	48	513.5	534	10	55.20
600	610	630	840	770	36/41	20	M33/M36	718	5	50	616.5	634	10	80.80
700	711	720	910	840	36/41	24	M33/M36	788	5	50	715	724	10	106.2
800	813	820	1025/1020	950	39/41	24	M36	898	5	52	817	824	10	130.5
900	914	920	1125/1120	1050	39/41	28	M36	998	5	44	918	924	10	91reference
1000	1016	1020	1255	1170	42/48	28	M39/M42	1110	5	46	1020	1024	10	127reference
1100		1120	1355	1270	42	32	M39	1215	5	50		1124	12	150reference
1200	1219	1220	1485	1390	48/54	32	M45/M48	1325	5	52	1223	1224	12	186reference
1300		1320	1585	1490	48	32	M45	1425	5	54		1324	12	215reference
1400	1422	1420	1685	1590	48/54	36	M45/M48	1525	5	58	1426	1424	14	245reference
1500		1520	1820	1710	56	36	M52	1640	5	60		1524	14	32。reference
1600	1626	1620	1930	1820	55/58	40	M52	1750	5	64	1630	1624	16	360reference
1750			2080	1970	58	44	M52	1900	5	66			16	400reference
1800	1829	1820	2130	2020	55/58	44	M52	1950	5	68	1833	1824	17	430reference
2000	2032	2020	2345	2230	60	48	M56	2150	5	70	2036	2024	18	515reference
2200		2220	2555	2440	62	52	M56	2370	6	90		2224	20	750reference
2400		2420	2765	2650	62	56	M56	2570	6	100		2424	20	950reference

PN 2.5MPa (25 pressure) flat welded steel pipe flange(PL -RF)

Norminal Diameter	Pipe Outside Diameter		Link Size					Seal Surface Size		Flange Thickness	Flange Inside Diameter B1		Groove Width	Approx Weight
Norminal Diameter	A1		Flange outer diameter	Diameter of center circle of bolt hole	Diameter of bolt hole	Number of bolt holes	thread	Seal Surface Size			Flange Inside Diameter B1		Groove Width	Approx Weight
DN	A	B	D	K	L	n	Th	d	f	C	A	B	b	(Kg)
10	17.2	14	90	60	14	4	M12	40	2	16	18	15	3	0.64
15	21.3	18	95	65	14	4	M12	45	2	16	22	19	3	0.80
20	26.9	25	105	75	14	4	M12	55	2	18	27.5	26	3	0.9g
25	33.7	32	115	85	14	4	M12	65	2	18	34.5	33	4	1.18
32	42.4	38	140/135	100	18	4	M16	78	2	20	43.5	39	4	1.96
40	48.3	45	150/145	110	18	4	M16	85	3	22	49.5	46	4	2.60
50	60.3	57	165/160	125	18	4	M16	100	3	24	61.5	59	4	2.71
65	76.1	76	185/180	145	18	8	M16	120	3	24	77.5	78	5	3.22
80	88.9	89	200/195	160	18	8	M16	135	3	26	90.5	91	5	4.06
100	114.3	108	235/230	190	22/23	8	M20	160	3	28	116	110	5	6.00
125	139.7	133	270	220	26/25	8	M24/M22	188	3	30	141.5	135	5	8.26
150	168.3	159	300	250	26/25	8	M24/M22	218	3	30	170.5	161	5	10.40
175		194	330	280	26/25	8	M24/M22	248	3	32		196	6	11.90
200	219.1	219	360	310	26/25	12	M24/M22	278	3	32	221.5	222	7	14.50
225		245	395	340	30	12	M27	302	3	34		248	8	17.00
250	273	273	425	370	30	12	M27	332	3	34	276.5	276	9	18.90
300	323.9	325	485	430	30	16	M27	390	4	36	327.5	328	9	26.80
350	355.6	377	555/550	490	34	16	M30	448	4	42	359.5	380	10	34.35
400	406.4	426	620/610	550	36/34	16	M33/M30	505	4	44	411	430	10	44.90
450	457	480	670/660	600	36/34	20	M33/M30	555	4	48	462	484	10	51.92
500	508	530	730	660	36/41	20	M33/M36	610	4	52	513.5	534	10	67.30
600	610	630	845/840	770	39/41	20	M36	718	5	56	616.5	634	10	95.20
700	711	720	960/955	875	42/48	24	M39/M42	815	5	60	715	724	10	116
800	813	820	1085/1070	990	48	24	M45/M42	930	5	64	817	824	10	150.2
900	914	920	1185/1180	1090	48/54	28	M45/M48	1025	5	58	918	924	10	160reference
1000	1016	1020	1320/1305	1210	55/58	28	M52	1140	5	62	1020	1024	10	210reference
1100		1120	1420	1310	56	32	M52	1240	5	66		1124	12	255reference
1200	1219	1220	1530/1525	1420	55/58	32	M52	1350	5	70	1223	1224	12	300 reference
1300		1320	1645	1530	62	32	M56	1450	5	74		1324	12	355reference
1400	1422	1420	1755/1750	1640	60/65	36	M56	1560	5	76	1426	1424	14	450reference
1500		1520	1865	1750	62	36	M56	1670	5	80		1524	16	480 reference
1600	1626	1620	1975	1860	60	40	M56	1780	5	84	1630	1624	16	570reference
1800	1829	1820	2195	2070	68	44	M64	1985	5	90	1833	1824	17	700reference
2000	2032	2020	2425	2300	68	48	M64	2210	5	96	2036	2024	18	900reference

Product Description:

Corresponding standards of flat welded steel pipe flange series: GB / T9119-2000,JB81-94, HGJ45-91, HG20593-97

Welding flange material: 201,304,316,316l,321,202, carbon steel, alloy steel, etc

There are several types of sealing surface of flat welding flange:

Concave convex surface (MFM) DN 1300 ~ 3000 DN300 ~ 3000 dn400 ~ 2000 DN300 ~ 800

Tenon surface (TG) DN 1300 ~ 3000 DN300 ~ 3000 DN300 ~ 3000 DN300 ~ 800

Full plane (FF) DN300 ~ 3000 DN300 ~ 3000 DN300 ~ 3000 DN300 ~ 800

Application:

due to its good comprehensive performance, flat welding flange is widely used in chemical engineering, construction, water supply, drainage, petroleum, light and heavy industry, refrigeration, sanitation, water heating, fire protection, electric power, aerospace, shipbuilding and other basic engineering.

Price

Our price fluctuates with raw materials and exchange rate.Please leave your contact information and give you a new quotation as soon as possible.

Packing

wooden case, wooden pallet or packing method specified by customers.

Note: we can produce products of various standards, models and materials according to user's requirements.

We pay more attention to customer service and opinions, and hope that our Weld Neck Flange 12" Cl. 300 DN300 Bw Buttweld RF Pipe Flange Cdfl867 can enhance your experience of using them. We implement the brand effect, actively implement the strategy of talent introduction and cultivation, and steadily increase the salary of employees. Through steady development and technology accumulation in recent years, we have gradually implemented branded operations and stepped into foreign markets with a new attitude.

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