ASTM A350 LF2 Flanges

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Specification of ASTM A350 LF2 Flanges Weight Of A350 Grade Lf2 Loose Flanges Sa350 Steel Flanges Pressure Chart A350 Lf2 Flange Dimensions Thermal Expansion of LTCS A350 LF2 Flanges A350 Lf2 Chemical Composition Sa350 Gr Lf2 Mechanical Properties

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ASTM A350 LF2 Flanges in Detail

Technical Data

Full Specifications

›Technical Data

Specification of ASTM A350 LF2 Flanges

Size Chart	1/2" (15 NB) to 48" (1200NB) DN10~DN5000
JIS	5K, 10 K, 16 K 20 K, 30 K, 40 K, 63 K
UNI	6Bar 10Bar 16Bar 25Bar 40Bar
EN	6Bar 10Bar 16Bar 25Bar 40Bar
Pressure Rating ANSI	600 LBS, 900 LBS, 150 LBS, 2500 LBS, 300 LBS, 1500 LBS
Pressure Calculation in DIN	16Bar 6Bar 25Bar 40Bar 10Bar / PN10 PN16 PN6 PN25 PN64 PN40
Production technique	Forged, Heat treated and machined
Connect Type/ Flange Face Type	Ring Type Joint (RTJ), Flat Face (FF), Large Male-Female (LMF), Raised Face (RF), Lap-Joint Face (LJF), Small Male-Female (SMF), Small Tongue, Large Tongue & Groove, Groove
Coating	Anti-rust Paint, Zinc Plated,Oil Black Paint, Cold and Hot Dip Galvanized, Yellow Transparent
Most common types	Forged / Threaded / Screwed / Plate
Uses & application	Nuclear power (mostly seamless). Bitumen upgraders. Petrochemicals and acids. Heavy oil refineries.
Test Certificates	EN 10204/3.1B / Raw Materials Certificate / 100% Radiography Test Report / Third Party Inspection Report, etc
Export to	Spain, Canada, Singapore, Indonesia, Ukraine, Ireland, Brazil, Korea, Iran, India, Saudi Arabia, Thailand, Egypt, Oman, Dubai, USA, Peru, etc
Test	Hydrostatic testing machine, X-ray detector, Direct-reading Spectrograph, UI trasonic flaw detector, Magnetic particle detector
Equipment	Bending machine, Pushing Machine,Press machine, electric bevelling machine, Sand-blasting machine etc
Origin	Indian / West Europe / Japan / USA / Korean
Standards	API7S-15, API7S-43, API605, ANSI/ASME B16.5, B16.47 Series A & B, B16.48, ASME Flanges, BS Flanges, DIN Flanges, EN Flanges, BS4504, BS 10, EN-1092, DIN, ANSI Flanges, GOST Flange, ASME/ANSI B16.5/16.36/16.47A/16.47B, MSS S44, ISO70051, JISB2220, BS1560-3.1, EN1092
Manufacturer of	ANSI DIN, GOST, JIS, UNI, BS, AS2129, AWWA, EN, SABS, NFE etc. / : -BS Flange, EN Flange, API 6A Flange, ANSI Flange, ASME Flange, DIN Flange, EN1092-1 Flange, UNI Flange, JIS/ KS Flange, BS4504 Flange, GB Flange, AWWA C207 Flange, GOST Flange, PSI Flange B.S: BS4504 , BS3293, BS1560, BS10 German (DIN) AS 2129: Table D; Table E; Table H ANSI B16.5, ANSI B16.47, MSS SP44, ANSI B16.36, ANSI B16.48 ANSI : ANSI B16.5, ANSI B16.47(API605), MSS SP44, ANSI B16.36, ANSI B16.48 American standard (ANSI) British standard (BS) ANSI B16.5, ANSI B16.47 Series A & B, MSS SP44, ASA, API-605, AWWA, Custom Drawings DIN: DIN 2527, DIN 2566, DIN 2573, DIN 2576, DIN 2641, DIN 2642, DIN 2655, DIN 2656, DIN 2627, DIN 2628, DIN 2629, DIN 2631, DIN 2632, DIN 2633, DIN 2634, DIN 2635, DIN 2636, DIN 2637, DIN 2638 The other standard: AWWA C207; EN1092-1, GOST12820, JIS B2220; KS B1503, SABS1123; NFE29203; UNI2276
Special design	As per your drawing AS, ANSI, BS, DIN and JIS / 15 NB (1/2") to 200 NB (8") / Equal and Reducing Configurations

Sa350 Steel Flanges Pressure Chart

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ANSI/ASME B16.34	ANSI PRESSURE RATING	ANSI PRESSURE RATING_2	ANSI PRESSURE RATING_3	ANSI PRESSURE RATING_4	ANSI PRESSURE RATING_5	ANSI PRESSURE RATING_6	ANSI PRESSURE RATING_7
Temperature °F	150#	300#	400#	600#	900#	1500#	2500#
-20 to 100	265	695	925	1390	2085	3470	5785
200	260	680	905	1360	2035	3395	5660
300	230	655	870	1305	1955	3260	5435
400	200	640	855	1280	1920	3200	5330
500	170	620	830	1245	1865	3105	5180
600	140	605	805	1210	1815	3025	5040
650	125	590	785	1175	1765	2940	4905
700	110	570	755	1135	1705	2840	4730
750	95	530	710	1065	1595	2660	4430
800	80	510	675	1015	1525	2540	4230
850	65	485	650	975	1460	2435	4060
900	50	450	600	900	1350	2245	3745
950	35	280	375	560	845	1405	2345
1000	20	165	220	330	495	825	1370

Thermal Expansion of LTCS A350 LF2 Flanges

Properties	Metric	Imperial
Thermal expansion co-efficient (@0-100°C/32-212°F)	10.4 µm/m°C	5.78 µin/in°F
Thermal conductivity	21.6 W/mK	150 BTU in/hr.ft².°F

Requirements and Materials country wise

col_1	col_2
ASTM A350 lf2 class 1 rf class 300 blind flanges	Chile, South Africa, China, United Kingdom -UK
ANSI B16.5 SORF Flange LF2 DN600 CLASS 150	United Arab Emirates (UAE), Bahrain, Philippines, UK
astm a350 lf2 class 1class 300 blind flanges	Netherlands, Philippines, Malaysia, Philippines
blind flange RF 18" 150LB, sch40 ASTM A350 Grade LF2	Egypt, Oman, Sweden, Europe
WN RF Flange 24" Class900 SCH100 ASTM A350-LF2 cl 1 ASME B16.5	Australia, Germany, Malaysia, Spain
carbon steel 150 lb a350 lf2 ansi welding neck flange	Malaysia, USA, Singapore, Europe
class 300 RF A350 LF2 carbon steel flange	Italy, Saudi Arabia (KSA), Japan, Canada
asme a16.5 astm A350 Lf2 carbon steel plate flat weld steel pipe flange	Turkey, South Africa, Colombia, Malaysia
astm a350 lf2 blind pipe flange blanks	Malaysia, Thailand, Taiwan, Mexico
A350 LF2 material 4 inch SCH40 class600 or PN110 WN welding neck flange	UK, Bangladesh, South Korea, Malaysia
DN150 FLANGE WN ASME B16.5 CL 150 RF ASTM A350 LF2 CL 1 SCH 40	Singapore, Kuwait, Romania, Poland
Astm a350 Lf2 Cl1 Cl2 Blind Flange	Iran, Singapore, Malaysia, Canada
ASME B16.5 astm a350 lf2 steel 6 inch pipe flange	Norway, Finland, Los Alamos -Mexico, Singapore
a350 gr lf2 low temperature carbon steel forged flanges	Russia, Brazil, NY 12203 (USA), Ellington -United States
blind flange 24" class 150 a350 gr lf2	Hong Kong, UAE, Dammam -KSA, Singapore
FLANGE WN CL.600 RF Sch.160 ASTM A350-LF2 ASME B16.5	Dubai, Nigeria, Qatar, Malaysia
150# RF SCH 80 ASME B16.5 ASTM A350 LF2 CL 1 LTCS WN Flange	Malaysia, UAE, Czechia, Belgium
A350 Lf2 Class 900 Rtj Ring Type Joint Flange	UK, Indonesia, Malaysia, Thailand
Astm A350 lf2 Class150 Blind Flange	Philippines, France, Europe, Malaysia

›Dimensions & Weight

Weight Of A350 Grade Lf2 Loose Flanges

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CLASS	Nominal Pipe Size	Slip On Flange	Threaded Flange	Socket Weld Flange	Lap Joint Flange	Blind Flange	Weld Neck Flange
150 lb	½	1	1	2	1	2	2
	¾	2	2	2	2	2	2
	1	2	2	2	2	2	3
	1¼	3	3	3	3	3	3
	1½	3	3	3	3	4	4
	2	5	5	5	5	5	6
	2½	8	8	8	8	7	10
	3	9	9	9	9	9	11.5
	3½	11	12	11	11	13	12
	4	13	13	13	13	17	16.5
	5	15	15	15	15	20	21
	6	19	19	19	19	27	26
	8	30	30	30	30	47	42
	10	43	43	43	43	70	54
	12	64	64	64	64	123	88
	14	90	90	90	105	140	114
	16	106	98	98	140	180	140
	18	130	130	130	160	220	165
	20	165	165	165	195	285	197
	22	185	185	185	245	355	225
	24	220	220	220	275	430	268
CLASS	Nominal Pipe Size	Slip On	Threaded	Socket Weld	Lap Joint	Blind	Weld Neck
300 lb	½	2	2	3	2	2	2
	¾	3	3	3	3	3	3
	1	3	3	3	3	4	4
	1¼	4.5	4.5	4	4.5	6	5
	1½	6.5	6.5	6	6.5	7	7
	2	7	7	7	7	8	9
	2½	10	10	10	10	12	12
	3	13	14	13	14.5	16	18
	3½	17	17	17	17	21	20
	4	23.5	24	22	24	28	26.5
	5	29	31	28	28	37	36
	6	39	39	39	39	50	45
	8	58	58	58	58	81	69
	10	81	81	81	91	124	100
	12	115	115	115	140	185	142
	14	165	165	165	190	250	206
	16	210	220	190	234	315	250
	18	253	280	250	305	414	320
	20	315	325	315	375	515	400
	22	370	370	370	435	640	465
	24	490	490	475	550	800	580
CLASS	Nominal Pipe Size	Slip On	Threaded	Socket Weld	Lap Joint	Blind	Weld Neck
400 lb	½	2	2	2	2	2	3
	¾	3	3	3	3	3	3.5
	1	3.5	3.5	3.5	3.5	4	4
	1¼	4.5	4.5	4.5	4.5	6	4.5
	1½	6.5	6.5	6.5	6.5	8	8
	2	8	8	8	8	10	10
	2½	12	12	12	11	15	14
	3	15	15	15	14	20	18
	3½	21	21	21	20	29	26
	4	26	26	26	25	33	35
	5	31	31	31	29	44	43
	6	44	44	44	42	61	57
	8	67	67	67	64	100	89
	10	91	91	91	110	155	125
	12	130	130	130	152	226	175
	14	191	191	191	210	310	233
	16	253	253	253	280	398	295
	18	310	310	310	345	502	360
	20	378	378	378	420	621	445
	22	405	405	405	455	720	505
	24	539	539	539	615	936	640
CLASS	Nominal Pipe Size	Slip On	Threaded	Socket Weld	Lap Joint	Blind	Weld Neck
600 lb	½	2	2	2	2	3	3
	¾	3	3	3	3	4	4
	1	4	4	4	4	4	4
	1¼	5	5	5	5	6	6
	1½	7	7	7	7	8	8
	2	9	9	9	9	10	12
	2½	13	13	13	12	15	18
	3	16	16	16	15	20	23
	3½	21	21	21	20	29	26
	4	37	37	37	36	41	42
	5	63	63	63	63	68	68
	6	80	80	80	78	86	81
	8	115	15	15	112	140	120
	10	177	177	177	195	231	190
	12	215	215	215	240	295	226
	14	259	259	259	290	378	347
	16	366	366	366	400	527	481
	18	476	476	476	469	665	555
	20	612	612	612	604	855	690
	22	590	590	590	670	1000	720
	24	876	876	876	866	1250	977
CLASS	Nominal Pipe Size	Slip On	Threaded	Socket Weld	Lap Joint	Blind	Weld Neck
900 lb	½	6	6	6	6	4	7
	¾	6	6	6	6	6	7
	1	7.5	7.5	7.5	7.5	9	8.5
	1¼	10	10	10	10	10	10
	1½	14	14	14	14	14	14
	2	22	22	22	21	25	24
	2½	31	31	31	25	32	31
	3	36	36	36	29	35	36
	4	53	53	53	51	54	53
	5	83	83	83	81	87	86
	6	110	110	110	105	115	110
	8	172	172	172	190	200	187
	10	245	245	245	277	290	268
	12	326	326	326	371	415	372
	14	400	400	400	415	520	562
	16	459	459	459	488	619	685
	18	647	647	647	670	880	924
	20	792	792	792	868	1107	1164
	24	1480	1480	1480	1659	2099	2107
CLASS	Nominal Pipe Size	Slip On	Threaded	Socket Weld	Lap Joint	Blind	Weld Neck
1500 lb	½	6	6	6	6	4	7
	¾	6	6	6	6	6	7
	1	8	8	8	8	9	9
	1¼	10	10	10	10	10	10
	1½	14	14	14	14	14	14
	2	25	25	25	25	25	25
	2½	36	36	36	35	35	36
	3	48	48	48	47	48	48
	4	73	73	73	75	73	73
	5	132	132	132	140	140	132
	6	165	165	165	170	160	165
	8	260	260	260	286	302	275
	10	436	436	436	485	510	455
	12	667	667	667	749	775	690
	14	940	940	940	890	975	940
	16	1250	1250	1250	1250	1300	1250
	18	1625	1625	1625	1475	1750	1625
	20	2050	2050	2050	1775	2225	2050
	24	2825	2825	2825	2825	3625	3325
CLASS	Nominal Pipe Size	Slip On	Threaded	Socket Weld	Lap Joint	Blind	Weld Neck
2500 lb	½	….	7	….	7	7	8
	¾	….	9	….	8	10	9
	1	….	12	….	12	12	13
	1¼	….	18	….	17	18	20
	1½	….	25	….	24	25	28
	2	….	38	….	37	39	42
	2½	….	55	….	53	56	52
	3	….	83	….	80	86	94
	4	….	127	….	122	133	146
	5	….	210	….	204	223	244
	6	….	323	….	314	345	378
	8	….	485	….	471	533	576
	10	….	925	….	897	1025	1068
	12	….	1300	….	1262	1464	1608

A350 Lf2 Flange Dimensions

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Standard	Class	Diameter	Bolt Circle Diameter	Number of Bolts	Bolt Size	Diameter of Bolt Hole
AS4087	PN14	95	67	4	M12	14
AS 2129 Flange	Table C	95	67	4	13	14
AS 2129 Flange	Table D	95	67	4	13	14
AS 2129 Flange	Table E	95	67	4	13	14
AS 2129 Flange	Table F	95	67	4	13	14
AS 2129 Flange	Table H	114	83	4	16	17
AS 2129 Flange	Table J	114	83	4	16	17
ANSI B16.5	ANSI 150	89	60	4	13	16
ANSI B16.5	ANSI 300	95	67	4	13	16
ANSI B16.5	ANSI 600	95	67	4	13	16
ANSI B16.5	ANSI 900	121	83	4	19	22
ANSI B16.5	ANSI 1500	121	83	4	19	22
ISO 7005 (DIN) Flange	PN6	80	55	4	M10	11
ISO 7005 (DIN) Flange	PN10	95	65	4	M12	14
ISO 7005 (DIN) Flange	PN16	95	65	4	M12	14
ISO 7005 (DIN) Flange	PN20	90	60.5	4	M14	16
ISO 7005 (DIN) Flange	PN25	95	65	4	M12	14
ISO 7005 (DIN) Flange	PN40	95	65	4	M12	14

›Material Properties

A350 Lf2 Chemical Composition

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col_1	col_2	col_3	col_4	col_5	col_6	col_7
C%	Mn%	Si%	S%	P%	Cr%	Ni%
0.30 max	0.6/1.35	.15/.30	.040 max	.035 max	0.30 max	0.40 max

Sa350 Gr Lf2 Mechanical Properties

PROPERTIES	Imperial
TS Min psi (Mpa)	70,000 (485)
YS Min psi (Mpa)	36,000 (250)
EL (2″ Min)	22%
RA Min	30%
Hardness, Bhn	Max 197
-50ºF Charpy	Min Impact
Energy F t/Lb (J):-
Set of 3 Specimen*	15 (20)
For One Specimen	12 (16)

ASTM A350 LF2 Flanges

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