Stainless Steel Lap Joint Flanges

We have an extensive inventory of stainless steel lap joint flanges to compliment our pipe products. Most of our high quality, flanges and gasket kits are ready to ship upon request. Speak to one of our specialists and find out which flange products are available to meet your flange and piping specifications. View an overview of our stainless steel product offerings.

Stainless steel flanges connect with pipe and fittings to form a piping system that delivers air, water, natural gas, oil, and steam in plumbing applications and food and dairy processing. Flanges provide easy access for cleaning, inspection, and modification. Flange types including blind, butt weld, lap joint, slip-on, socket weld, and threaded, are available in a variety of sizes and shapes. Stainless steel is durable, resists corrosion from caustic chemicals, corrosive fluids, oils, and gases, and withstands pressure and high temperatures.

Lap Joint Flange Specification

Specification Chart	Stainless Steel Lap Joint Flanges
Lap Joint Flange Use	Stainless Steel Lap Joint Flanges Can Come With A Flat Face (FF) Or Raised Face (RF).
Flange Test	Hydrostatic testing machine/ UI trasonic flaw detector/ X-ray detector/ Direct-reading Spectrograph/ Magnetic particle detector
Flange Equipment	Pushing Machine/ electric bevelling machine/ Press machine/ Bending machine/ Sand-blasting machine etc
Coating	Anti-rust Paint/ Zinc Plated/ Oil Black Paint/ Yellow Transparent/ Cold and Hot Dip Galvanized
Face Type	Raised face (RF) Ring type joint (RTJ) Flat Face (FF)
Thickness Chart	SCH 10S/ SCH 20/ SCH 40/ SCH 50/ SCH 60/ SCH 80/ SCH 100/ SCH 120/ SCH 140 To SCH 160
Test Certificates	EN 10204/3.1B Raw Materials Certificate 100% Radiography Test Report Third Party Inspection Report, etc
Production Technique	Forged/ Heat treated and machined
Manufacturer of Vanstone Flange Stainless Steel	Forged/ Threaded/ Screwed / Plate
Size Chart	1/2 Inch To 18 Inch
LJ Flanges Dimensions	MSS SP44, ASME B16.5, EN 1092-2, ASME B16.47 Series A And B, ASA, API-605, EN 1092-1, AWWA C207
JIS Standard	5K/ 10K/ 16K 20K/ 30K/ 40K/ 63K
Other Standard	B16.47 Series A & B/ B16.48, BS4504/ GOST
UNI Standard	6 Bar/ 10 Bar/ 16 Bar/ 25 Bar/ 40 Bar
Supporting Material	Gasket/ Ring Joint/ Flange Bolts
Vanstone Flange Stainless Steel Pressure Ratings	Class 150/ Class 300/ Class 400/ Class 600/ Class 900/ Class 1500 To Class 2500
Manufacturer Types	Raised Face Lap Joint Flange Lap Joint Weld Neck Flange Lap Joint Flat Face Flange Lap Joint Blind Flange Lap Joint Slip On Flange
Forging Methods	Casting/ Forging/ Rolling/ Cutting
EN Standard	6Bar/ 10Bar/ 16Bar/ 25Bar/ 40Bar
DIN Standard	PN6/ PN10/ PN16/ PN25/ PN40/ PN64

Material Grade For Lap Joint Flange

Stainless Steel Lap Joint Flange	ASTM/ASME A/SA182 F304, F304L, F316, F316L, ASTM/ASME A/SA351 CF8/ CF3/ CF8M/ CF3M/ DIN 1.4301/ DIN 1.4306/ DIN 1.4401/ DIN 1.4404/ DIN 1.4308/ DIN 1.4408/ DIN 1.4306/ DIN 1.4409
Alloy Steel Lap Joint Flange	ASTM A182 / ASME SA182 F5/ F9/ F11/ F12/ F22/ F91
Titanium Lap Joint Flange	ASTM B381 / ASME SB381, Titanium Gr. 1, Titanium Gr. 2/ Titanium Gr. 4/ Titanium Gr. 5/ Titanium Gr. 7 ASTM R50250/GR.1 \| R50400/GR.2 \| R50550/GR.3 \| R50700/GR.4 \| GR.6 \|R52400/GR.7 \| R53400/GR.12 \| R56320/GR.9 \|R56400/GR.5
Hastelloy Lap Joint Flange	ASTM B564 / ASME SB564, Hastelloy C276 (UNS N10276)/ C22 (UNS N06022)/ C4/ C2000/ B2/ B3/ X Flanges
Monel Lap Joint Flange	ASTM B564 / ASME SB564, Monel 400 (UNS No. N04400)/ Monel 500 (UNS No. N05500)
Copper Lap Joint Flange	T1, T2, C10100/ C10200/ C10300/ C10400/ C10500/ C10700/ C10800/ C10910/C10920/ TP1/ TP2/ C10930/ C11000/ C11300/ C11400/ C11500/ C11600/ C12000/C12200/ C12300/ TU1/ TU2/ C12500/ C14200/ C14420/ C14500/ C14510/ C14520/ C14530/ C17200/ C19200/ C21000/ C23000/ C26000/ C27000/ C27400/ C28000/ C33000/ C33200/ C37000/ C44300/ C44400/ C44500/ C60800/ C63020/ C68700/ C70400/ C70600/ C70620/ C71000/ C71500/ C71520/ C71640 etc
Brass Lap Joint Flange	3602 / 2604 / H5 9 / H62 / etc.
Inconel Lap Joint Flange	ASTM B564 / ASME SB564, Inconel 600/ 601/ 625/ 718/ 783/ 690/ x750 Lap Joint Flange
Carbon Steel Lap Joint Flange	ASTM/ASME A/SA105 A/SA105N & A/SA216-WCB, DIN 1.0402, DIN 1.0460, DIN 1.0619, Die Steel, ASTM A105 / ASME SA105, A105N, ASTM A350 LF2 / ASME SA350, High Yield CS ASTM A694 / A694 (F52 F56 F60 F65 F70 F80)
Copper Nickel Lap Joint Flange	ASTM / ASME SB 61 / 62 / 151 / 152/ Copper Nickel 90/10 (C70600 )/ Cupro Nickel 70/30 (C71500)/ UNS C71640
Alloy 20 Lap Joint Flange	ASTM B462 / ASME SB462/ Carpenter® 20 Alloy/ Alloy 20Cb-3
Aluminium Lap Joint Flange	5052 /6061/ 6063 / 2017 / 7075 / etc.
Nickel Lap Joint Flange	ASTM B564 / ASME SB564, Nickel 200/ Nickel 201/ Nickel 205/ Nickel 205LC
Duplex Lap Joint Flange	S31803 / S32205 A182 Gr F51 / F52 / F53 / F54 / F55 / F57 / F59 / F60 / F61
Super Duplex Lap Joint Flange	S32750 / S32760 A182 Gr F51 / F52 / F53 / F54 / F55 / F57 / F59 / F60 / F61
Incoloy Lap Joint Flange	ASTM B564 / ASME SB564, Incoloy 800/ 800H/ 800HT (UNS N08800)/ 825 (UNS N08825)/ 925 Flanges
254 Smo Lap Joint Flange	ASTM A182 / ASME SA182, SMO 254/6Mo/ UNS S31254/ DIN 1.4547
Nimonic Lap Joint Flange	Nimonic 75/ Nimonic 80A/ Nimonic 90
Other Lap Joint Flange material	Tin bronze/ Alumunum bronze/ Lead bronze

Types Of Stainless Steel Lap Joint Flanges

Stainless Steel Lap Joint Flanges
Loose Flange
LJ Flange
Lapped Joint Flange
Vanstone Flange
RFLJ Flange
LJFF Flange
SS 304 Lap Joint Flanges
Vanstone Flange Stainless Steel
Raised Face Lap Joint Flange
Stainless Steel 304L Lap Joint Flange
ASME B16.5 Lap Joint Flange
Type A Lap Joint Flange

ASME B16.5 Lap Joint Flange Dimensions

Class 150 Lap Joint Flange Dimensions

Normal Size Of Steel Pipe In Inch	Normal Size Of Steel Pipe in MM	O.D.	(WT)	Lapped Thickness	Inner Daimeter	PCD	Lapped Thickness	Lap Joint Radius	LJ Bolts Number	Bolts Size In UNC	Length Of Machine Bolt	Length Of (RF) Stud	Lap Joint Flange Bolts Hole Size	ISO Stud Size	Weight In Kilogram (KG)
		A	B	C	D	E	G
1/2	15	90	30	16	22.9	60.3	11.2	3	4	1/2	50	55	5/8	M14	0.8
3/4	20	100	38	16	28.2	69.9	12.7	3	4	1/2	50	65	5/8	M14	0.9
1	25	110	49	17	34.9	79.4	14.3	3	4	1/2	55	65	5/8	M14	0.9
1 1/4	32	115	59	21	43.7	88.9	15.9	5	4	1/2	55	70	5/8	M14	1.4
1 1/2	40	125	65	22	50	98.4	17.5	6	4	1/2	65	70	5/8	M14	1.4
2	50	150	78	25	62.5	120.7	19.1	8	4	5/8	70	85	3/4	M16	2.3
2 1/2	65	180	90	29	75.4	139.7	22.3	8	4	5/8	75	90	3/4	M16	3.2
3	80	190	108	30	91.4	152.4	23.9	10	4	5/8	75	90	3/4	M16	3.7
3 1/2	90	215	122	32	104.1	177.8	23.9	11	8	5/8	75	90	3/4	M16	5
4	100	230	135	33	116.8	190.5	23.9	11	8	5/8	75	90	3/4	M16	5.9
5	125	255	164	36	144.4	215.9	23.9	11	8	3/4	85	95	7/8	M20	6.8
6	150	280	192	40	171.4	241.3	25.4	13	8	3/4	85	100	7/8	M20	8.6
8	200	345	246	44	222.2	298.5	28.6	13	8	3/4	90	110	7/8	M20	13.7
10	250	405	305	49	277.4	362	30.2	13	12	7/8	100	115	1	M24	19.5
12	300	485	365	56	328.2	431.8	31.8	13	12	7/8	100	120	1	M24	29
14	350	535	400	79	360.2	476.3	35	13	12	1	115	135	1 1/8	M27	41
16	400	595	457	87	411.2	539.8	36.6	13	16	1	115	135	1 1/8	M27	54
18	450	635	505	97	462.3	577.9	39.7	13	16	1 1/8	125	145	1 1/4	M30	59
20	500	700	559	103	514.4	635	42.9	13	20	1 1/8	140	160	1 1/4	M30	75
24	600	815	663	111	616	749.3	47.9	13	20	1 1/4	150	170	1 3/8	M33	100

Class 300 Lap Joint Flange Dimensions

Normal Size Of Steel Pipe In Inch	Normal Size Of Steel Pipe in MM	O.D.	(WT)	Lapped Thickness	Inner Daimeter	PCD	Lapped Thickness	Lap Joint Radius	LJ Bolts Number	Bolts Size In UNC	Length Of Machine Bolt	Length Of (RF) Stud	Lap Joint Flange Bolts Hole Size	ISO Stud Size	Weight In Kilogram (KG)
		A	B	C	D	E	G
1/2	15	95	38	22	22.9	66.7	14.3	3	4	1/2	55	65	5/8	M14	1.2
3/4	20	115	48	25	28.2	82.6	15.9	3	4	5/8	65	75	3/4	M16	1.4
1	25	125	54	27	34.9	88.9	17.5	3	4	5/8	65	75	3/4	M16	1.4
1 1/4	32	135	64	27	43.7	98.4	19.1	5	4	5/8	70	85	3/4	M16	1.8
1 1/2	40	155	70	30	50	114.3	20.7	6	4	3/4	75	90	7/8	M20	2.7
2	50	165	84	33	62.5	127	22.3	8	8	5/8	75	90	3/4	M16	3.2
2 1/2	65	190	100	38	75.4	149.2	25.4	8	8	3/4	85	100	7/8	M20	4.6
3	80	210	117	43	91.4	168.3	28.6	10	8	3/4	90	110	7/8	M20	5.9
3 1/2	90	230	133	44	104.1	184.2	30.2	11	8	3/4	95	110	7/8	M20	7.7
4	100	255	146	48	116.8	200	31.8	11	8	3/4	95	115	7/8	M20	10
5	125	280	178	51	144.4	235	35	11	8	3/4	110	120	7/8	M20	12.7
6	150	320	206	52	171.4	269.9	36.6	13	12	3/4	110	120	7/8	M20	17.7
8	200	380	260	62	222.2	330.2	41.3	13	12	7/8	120	140	1	M24	26
10	250	445	321	95	277.4	387.4	47.7	13	16	1	140	160	1 1/8	M27	36
12	300	520	375	102	328.2	450.8	50.8	13	16	1 1/8	145	170	1 1/4	M30	52
14	350	585	425	111	360.2	514.4	54	13	20	1 1/8	160	180	1 1/4	M30	75
16	400	650	483	121	411.2	571.5	57.2	13	20	1 1/4	165	190	1 3/8	M33	86
18	450	710	533	130	462.3	628.6	60.4	13	24	1 1/4	170	195	1 3/8	M33	113
20	500	775	587	140	514.4	685.8	63.5	13	24	1 1/4	185	205	1 3/8	M33	143
24	600	915	702	153	616	812.8	69.9	13	24	1 1/2	205	230	1 5/8	M39	216

Class 600 Lap Joint Flange Dimensions

Normal Size Of Steel Pipe In Inch	Normal Size Of Steel Pipe in MM	O.D.	(WT)	Lapped Thickness	Inner Daimeter	PCD	Lapped Thickness	Lap Joint Radius	LJ Bolts Number	Bolts Size In UNC	Length Of (RF) Stud	Lap Joint Flange Bolts Hole Size	ISO Stud Size	Weight In Kilogram (KG)
		A	B	C	D	E	G
1/2	15	95	38	22	22.9	66.7	14.3	3	4	1/2	75	5/8	M14	1.3
3/4	20	115	48	25	28.2	82.6	15.9	3	4	5/8	90	3/4	M16	1.4
1	25	125	54	27	34.9	88.9	17.5	3	4	5/8	90	3/4	M16	1.8
1 1/4	32	135	64	29	43.7	98.4	20.7	5	4	5/8	95	3/4	M16	2.3
1 1/2	40	155	70	32	50	114.3	22.3	6	4	3/4	110	7/8	M20	3.2
2	50	165	84	37	62.5	127	25.4	8	8	5/8	110	3/4	M16	4.1
2 1/2	65	190	100	41	75.4	149.2	28.6	8	8	3/4	120	7/8	M20	5.9
3	80	210	117	46	91.4	168.3	31.8	10	8	3/4	125	7/8	M20	7.3
3 1/2	90	230	133	49	104.1	184.2	35	11	8	7/8	140	1	M24	9.6
4	100	275	152	54	116.8	215.9	38.1	11	8	7/8	145	1	M24	16.8
5	125	330	189	60	144.4	266.7	44.5	11	8	1	165	1 1/8	M27	29
6	150	355	222	67	171.4	292.1	47.7	13	12	1	170	1 1/8	M27	36
8	200	420	273	76	222.2	349.2	55.6	13	12	1 1/8	190	1 1/4	M30	52
10	250	510	343	111	277.4	431.8	63.5	13	16	1 1/4	215	1 3/8	M33	77
12	300	560	400	117	328.2	489	66.7	13	20	1 1/4	220	1 3/8	M33	91
14	350	605	432	127	360.2	527	69.9	13	20	1 3/8	235	1 1/2	M36	105
16	400	685	495	140	411.2	603.2	76.2	13	20	1 1/2	255	1 5/8	M39	150
18	450	745	546	152	462.3	654	82.6	13	20	1 5/8	275	1 3/4	M42	182
20	500	815	610	165	514.4	723.9	88.9	13	24	1 5/8	285	1 3/4	M42	232
24	600	940	718	184	616	838.2	101.6	13	24	1 7/8	330	2	M48	332

Stainless Steel Lap Joint Flanges Facing Types

Type A: Flat Face (FF)
Type B: Raised Face (RF)
Type C: Tongue Face (TF)
Type D: Grooved Face (GF)
1Type E: Spigo
Type F: Recess
Type G: Ring Recess
Type H: O-Ring Groove

Lap Joint Flange Weight Chart

Normal Size Of Steel Pipe In Inches	Size In Millimeter	ASME B16.5 Lap Joint Flange Outer Daimeter (O.D.) In (MM)	ASME B16.5 Lap Joint Flange Wall Thickness Of (D) In M)	ASME B16.5 Lap Joint Pipe Flange
1/2	15	88.9	11.2	0.4
3/4	20	98.6	12.7	0.6
1	25	108	14.2	0.8
1 1/4	32	117.3	15.7	1
1 1/2	40	127	17.5	1.3
2	50	152.4	19.1	2.1
2 1/2	65	177.8	22.4	3.3
3	80	190.5	23.9	3.9
3 1/2	90	215.9	23.9	4.8
4	100	228.6	23.9	5.3
5	125	254	23.9	6.1
6	150	279.4	25.4	7.5
8	200	342.9	28.4	12.1
10	250	406.4	30.2	16.5
12	300	482.6	31.8	26.2
14	350	533.4	35.1	34.6
16	400	596.9	36.6	44.8
18	450	635	39.6	48.9
20	500	698.5	42.9	61.9

Lap Joint Flange Tolerances

ANSI B16.5 Lap Joint Pipe Flange	Diameter	Tolerance
(A)	(Outer Diameter)	When Outer Diameter is 24 Inch or less: ±1/16" (1.6 mm) When Outer Diameter is over 24": ±1/8" (3.2 mm)
(D)	(Inner Diameter)	10 Inches and smaller: ±1/32" (0.8 in mm) 12 Inches thru 18": +1/8" (3.2 in mm) 20 Inches and larger: -1/16" (1.6 in mm)
(B)	Contact Face	1/16" (RF): ±1/32" (0.8 mm) 1/4" (RF), Tongue And Groove (male And female): ±1/64" (0.4 mm)
(J)	Hub At Base Dai.	When hub base is 24 inches or smaller: ±1/16" (1.6 millimeter) When hub base is over 24": ±1/8" (3.2 millimeter)
(H)	Diameter of hub at point of welding	5 inch or smaller: +3/32" (2.4 mm), -1/32" (0.8 millimeter) 6 inch or larger: +5/32" (4.0 millimeter), -1/32 (0.8 mm)
(P)	Drilling	(B.C.): ±1/16" (1.6 mm) (B.H.) spacing: ±1/32" (0.8 mm)
	Eccentricity of (bc) with respect to facing	2 1/2" or smaller ±1/32" (0.8 mm) max. 3" or larger ±1/16" (1.6 mm) max.
(C)	(W.T.)	18 inch or smaller: ±1/8" (3.2 mm), -0" 20 inch or larger: ±3/16" (4.8 mm), -0"
(K)	hub Length	10 Inch or smaller: ±1/16" (1.6 millimeter) 12 Inch or larger: ±1/8" (3.2 millimeter)