SS Flange Specifications

ANSI B16.5 – Steel Pipe Flanges – Maximum Pressure and Temperature Ratings

Maximum allowable non-shock pressure (psig) and temperature ratings for steel pipe flanges and flanged fittings according the American National Standard ANSI B16.5 – 1988.

Maximum Allowable non-shock Pressure (psig)
Temperature (oF)	Pressure Class (lb)
	150	300	400	600	900	1500	2500
	Hydrostatic Test Pressure (psig)
	450	1125	1500	2225	3350	5575	9275
-20 to 100	290	750	1000	1500	2250	3750	6250
200	260	750	1000	1500	2250	3750	6250
300	230	730	970	1455	2185	3640	6070
400	200	705	940	1405	2110	3520	5865
500	170	665	885	1330	1995	3325	5540
600	140	605	805	1210	1815	3025	5040
650	125	590	785	1175	1765	2940	4905
700	110	555	740	1110	1665	2775	4630
750	95	505	675	1015	1520	2535	4230
800	80	410	550	825	1235	2055	3430
850	65	320	425	640	955	1595	2655
900	50	225	295	445	670	1115	1855
950	35	135	185	275	410	685	1145
1000	20	85	115	170	255	430	715

stainless steel flange astm specification

ASTM standards define the specific manufacturing process of the material and determine the exact chemical composition of pipes, fittings and flanges, through percentages of the permitted quantities of carbon, magnesium, nickel, etc., and are indicated by “Grade”.

For example, a carbon steel pipe can be identified with Grade A or B, a stainless-steel pipe with Grade TP304 or Grade TP321, a carbon steel fitting with Grade WPB etc..

Below you will find as an example 3 tables with chemical requirements for:

Flanges according to ASTM A182 Grade F304, F304L F316L
Pipes according to ASTM A312 Grade TP304, TP304L, TP3016L
Fittings according to ASTM A403 Grade WP304, WP304L, WP316L

Furthermore, a table with frequently used ASTM Grades, arranged on Pipes, Fittings, Flanges, Valves, Bolts & Nuts, which belong together as a group.

As you may be have noted, in the table below, ASTM A105 has no Grade. Sometimes ASTM A105N is described;

N stands not for Grade, but for normalized. Normalizing is a type of heat treatment, applicable to ferrous metals only. The purpose of normalizing is to remove the internal stresses induced by heat treating, casting, forming etc

Flanges according to ASTM A182
Grade	C	Mn	P	S	Si	Ni	Cr	Mo
F304	0.08	2.0	0.045	0.030	1.0	8.0-11.0	18.0-20.0
F304L	0.030	2.0	0.045	0.030	1.0	8.0-13.0	18.0-20.0
F316L	0.030	2.0	0.045	0.030	1.0	10.0-15.0	16.0-18.0	2.0-3.0

stainless steel flange chart

15mm (1/2″)

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

20mm (3/4″)

Standard	Class	Diameter	Bolt Circle Diameter	Number of Bolts	Bolt Size	Diameter of Bolt Hole
AS4087	PN14	100	73	4	M12	14
AS 2129	Table C	100	73	4	13	14
	Table D	100	73	4	13	14
	Table E	100	73	4	13	14
	Table F	100	73	4	13	14
	Table H	115	83	4	16	18
	Table J	115	83	4	16	18
ANSI B16.5	ANSI 150	98	70	4	13	16
	ANSI 300	117	83	4	16	19
	ANSI 600	117	83	4	16	19
	ANSI 900	130	89	4	19	22
	ANSI 1500	130	89	4	19	22
ISO 7005 (DIN)	PN6	90	65	4	M10	11
	PN10	105	75	4	M12	14
	PN16	105	75	4	M12	14
	PN20	100	70	4	M14	16
	PN25	105	75	4	M12	14
	PN40	105	75	4	M12	14

ss 316 flange pressure rating

Stainless Steel Flanges – ASME/ANSI Class 300

ASME/ANSI B16.5-1996 Pipe Flanges and Flanged Fittings – Class 300 Flanges – outside and inside diameters, bolt circles, numbers and diameters of bolts

Carbon and stainless steel qualities according ASME B16.5 Table 1A.

Pipe Size (inches)	Flange Outside Diameter (inches)	Pipe Outside Diameter (inches)	Number of Bolt Holes	Bolt Hole Diameter (inches)1)	Bolt Circle (inches)
1/2	3-3/4	0.84	4	5/8	2-5/8
3/4	4-5/8	1.05	4	3/4	3-1/4
1	4-7/8	1.32	4	3/4	3-1/2
1-1/4	5-1/4	1.66	4	3/4	3-7/8
1-1/2	6-1/8	1.90	4	7/8	4-1/2
2	6-1/2	2.38	8	3/4	5
2-1/2	7-1/2	2.88	8	7/8	5-7/8
3	8-1/4	3.50	8	7/8	6-5/8
3-1/2	9	4.00	8	7/8	7-1/4
4	10	4.50	8	7/8	7-7/8
5	11	5.56	8	7/8	9-1/4
6	12-1/2	6.63	12	7/8	10-5/8
8	15	8.63	12	1	13
10	17-1/2	10.75	16	1-1/8	15-1/4
12	20-1/2	12.75	16	1-1/4	17-3/4
14	23	14.00	20	1-1/4	20-1/4
16	25-1/2	16.00	20	1-3/8	22-1/2
18	28	18.00	24	1-3/8	24-3/4
20	30-1/2	20.00	24	1-3/8	27
24	36	24.00	24	1-5/8	32

1) Recommended bolts are 1/8 smaller than the nominal bolt hole diameters shown.

stainless steel flange hs code

Hs Code	Description	Destination	Port of Loading	Unit	Quantity	Value (INR)	Per Unit (INR)
73072100	ALLOY STEEL INCLUDING STAINLESS STEEL FORGED FLANGES 316L 03300-1811-0661 FLANGE ANSI B16.5 MACHINED 6 INCH 600# 316L SS	United States	Bombay Air Cargo	PCS	1	26,919	26,919
73072100	ALLOY STEEL INCLUDING STAINLESS STEEL FORGED FLANGES 316L 02100-1811-0301 FLANGE 3 INCH CL150,ASME B16.5, SS	United States	Bombay Air Cargo	PCS	12	36,777	3,065
73072100	ALLOY STEEL INCLUDING STAINLESS STEEL FORGED FLANGES 316L 02100-1811-0401 FLANGE 4 INCH CL 150, ASME B16.5, SS	Singapore	Bombay Air Cargo	PCS	3	5,986	1,995
73072100	ALLOY STEEL INCLUDING STAINLESS STEEL FORGED FLANGES 316L 02100-1811-0101 FLANGE 1 INCH CL 150 ASME B16.5, SS	Singapore	Bombay Air Cargo	PCS	1	306	306
73071900	TUBE OR PIPES FITTINGS. FLANGE, PIPE;STUB END,2IN,SS ASTM 403S,TP316L,40S,BW, BE,LENGTH: MSS-A[SHORT].	Saudi Arabia	Nhava Sheva Sea	PCS	60	16,384	273
73072100	ALLOY STEEL INCLUDING STAINLESS STEEL FORGED FLANGES 316L 02100-1811-0401 FLANGE 4 INCH CL150, ASME B16.5, SS	United States	Bombay Air Cargo	PCS	11	44,365	4,033
73072200	FLANGES ASME B16.5 RF ASTM A182 GR F316/316L 3/4 FLANGE SW CL150 ASME B16.5 SS316	Lebanon	Bombay Air Cargo	PCS	112	35,109	313
73072200	FLANGES ASME B16.5 RF ASTM A182 GR F316/316L 1 BLIND FLANGE RF #150 ASME B16.5SS316	Lebanon	Bombay Air Cargo	PCS	2	823	411
73072200	FLANGES ASME B16.5 RF ASTM A182 GR F316/316L 1.25 FLANGE SW #150 SS316	Lebanon	Bombay Air Cargo	PCS	5	2,282	456

table e stainless steel flange dimensions

Table E Dimensions (In mm)

N.B Size
		D	K	L	A	C	N1	N2	B	H1	H2	R1	R2	No.Holes
Ins	Mm
½”	15	95.3	66.8	14.5	21.3	6.4	27.0	33.3	22.4	9.5	22.2	6.4	1.6	4
¾”	20	101.6	73.2	14.5	26.7	6.4	33.3	38.1	27.7	11.1	22.2	6.4	1.6	4
1″	25	114.3	82.6	14.5	33.5	7.2	42.9	47.6	34.6	11.1	22.2	6.4	1.6	4
1 ¼”	32	120.7	87.4	14.5	42.2	7.9	49.2	55.6	43.2	11.1	25.4	6.4	1.6	4
1 ½”	40	133.4	98.6	14.5	48.3	8.7	58.7	61.9	49.5	12.7	28.6	6.4	1.6	4
2″	50	152.4	114.3	17.5	60.5	9.5	69.9	74.6	62.0	12.7	28.6	6.4	1.6	4
2 ½”	65	165.1	127.0	17.5	73.2	10.3	82.6	90.5	74.7	15.9	31.8	6.4	1.6	4
3″	80	184.2	146.1	17.5	88.9	11.1	101.6	106.4	90.7	15.9	34.9	6.4	1.6	4
3 ½”	88	203.2	165.1	17.5	101.6	11.9	114.3	119.1	103.4	17.5	34.9	6.4	1.6	4
4″	100	215.9	177.8	17.5	114.3	12.7	130.2	133.4	116.1	19.1	41.3	9.5	3.2	4
5″	125	254.0	209.6	17.5	141.2	14.3	152.4	160.3	143.8	19.1	44.5	9.5	3.2	8
6″	150	279.4	235.0	17.5	168.4	17.5	184.2	185.7	171.7	19.1	47.6	9.5	3.2	8
8″	200	336.6	292.1	17.5	219.2	19.1	241.3	241.3	221.5	22.2	50.8	9.5	3.2	8
10″	250	406.4	355.6	22.2	273.1	22.2	292.1	298.5	276.4	27.0	63.5	9.5	3.2	8
12″	300	457.2	406.4	22.2	323.9	25.4	342.9	349.3	325.9	28.6	69.9	9.5	4.8	12
14″	350	527.1	469.9	25.4	355.6	28.6	406.4	–	359.2	–	73.0	9.5	4.8	12
16″	400	577.9	520.7	25.4	406.4	31.8	431.8	–	410.5	–	–	–	–	12
18″	450	641.4	584.2	25.4	457.2	34.9	–	–	461.8	–	–	–	–	12
20″	500	704.9	641.4	25.4	508.0	38.1	–	–	513.1	–	–	–	–	16
24″	600	825.5	755.7	28.7	609.6	47.6	–	–	616.0	–	–	–	–	16

table d stainless steel flange dimensions

Table D Dimensions (In mm)

N.B Size
		D	K	L	A	C	N1	N2	B	H1	H2	R1	R2	No. Holes
Ins	Mm
½”	15	95.3	66.8	14.5	21.3	4.8	27.0	33.3	22.4	9.5	22.2	6.4	1.6	4
¾”	20	101.6	73.2	14.5	26.7	4.8	33.3	38.1	27.7	11.1	22.2	6.4	1.6	4
1″	25	114.3	82.6	14.5	33.5	4.8	42.9	47.6	34.6	11.1	22.2	6.4	1.6	4
1 ¼”	32	120.7	87.4	14.5	42.2	6.4	49.2	55.6	43.2	11.1	25.4	6.4	1.6	4
1 ½”	40	133.4	98.6	14.5	48.3	6.4	58.7	61.9	49.5	12.7	28.6	6.4	1.6	4
2″	50	152.4	114.3	17.5	60.5	7.9	69.9	74.6	62.0	12.7	28.6	6.4	1.6	4
2 ½”	65	165.1	127.0	17.5	73.2	7.9	82.6	90.5	74.7	15.9	31.8	6.4	1.6	4
3″	80	184.2	146.1	17.5	88.9	9.7	101.6	106.4	90.7	15.9	34.9	6.4	1.6	4
3 ½”	88	203.2	165.1	17.5	101.6	9.7	114.3	119.1	103.4	17.5	34.9	6.4	1.6	4
4″	100	215.9	177.8	17.5	114.3	9.7	130.2	133.4	116.1	19.1	41.3	9.5	3.2	4
5″	125	254.0	209.6	17.5	141.2	12.7	152.4	160.3	143.8	19.1	44.5	9.5	3.2	8
6″	150	279.4	235.0	17.5	168.4	12.7	184.2	185.7	171.7	19.1	47.6	9.5	3.2	8
8″	200	336.6	292.1	17.5	219.2	12.7	241.3	241.3	221.5	22.2	50.8	9.5	3.2	8
10″	250	406.4	355.6	22.2	273.1	16.0	292.1	298.5	276.4	27.0	63.5	9.5	3.2	8
12″	300	457.2	406.4	22.2	323.9	19.1	342.9	349.3	325.9	28.6	69.9	9.5	4.8	12
14″	350	527.1	469.9	25.4	355.6	22.2	406.4	–	359.2	–	73.0	9.5	4.8	12
16″	400	577.9	520.7	25.4	406.4	22.2	–	–	410.5	–	–	–	–	12
18″	450	641.4	584.2	25.4	457.2	25.4	–	–	461.8	–	–	–	–	12
20″	500	704.9	641.4	25.4	508.0	28.6	–	–	513.1	–	–	–	–	16
24″	600	825.5	755.7	28.7	609.6	31.8	–	–	616.0	–	–	–	–	16

stainless steel spectacle blind flanges

It is also called as Figure-8 Blind.

It is generally a piece of metal that is cut to fit between two pipe flanges and usually sandwiched between two gaskets. a spectacle blind is often made from two metal discs that are attached to each other by a small section of steel. The shape is similar to a pair of glasses or “spectacles” – hence the name spectacle blind. One end of the blind will have an opening to allow flow through the pipe during operation and the other end is solid to block flow during maintenance. They are generally installed as a permanent device to separate process piping systems.

The whole idea of a spectacle blind is so that one can be absolutely sure that an item of equipment is properly and securely blanked off with no possibility of any flow or leakage through a valve during maintenance. The flow can be diverted to other items of equipment but not just bypassed around the blank as this would compromise the safety function of the spectacle blind. The flow has to valved off and pressure relieved prior to loosening flange bolts and swinging the blind.

These Flanges are available in the following range.

Stainless Steel: ASTM a182 F304, F304L, F304H, F316, F316L, F316Ti, F310, F310S, F321, F321H, F317, F347, F347H, F904L.

Duplex Stainless Steel: UNS S31803, UNS S32750

Carbon Steel: ASTM a105,

Alloy Steel: ASTM a182 F1, F11, F22, F5, F9, F91

Nickel Alloys: Monel 400 & 500, Inconel 600 & 625, Incoloy 800, 825, Hastelloy C22, C276

Copper Alloys: Copper, Brass & Gunmetal

Size: 1/8″ NB TO 48″NB.

Class: 150#, 300#, 400#, 600#, 900#, 1500#, 2500#Dimensional Standard

ANSI: ANSI B16.5, ANSI B16.47, MSS SP44, ANSI B16.36, ANSI B16.48

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, DIN 2673

B.S: BS 4504, BS4504, BS1560, BS10

stainless steel reducing flange dimensions

Specifications :

Size	:	½” (15 NB) to 48″ (1200NB)
Class	:	150#, 300#,400 #,600#,900#, 1500# & 2500 #.
Standards	:	ANSI B16.5, ANSI B16.47, MSS SP44, ANSI B16.36, ANSI B16.48
DIN	:	DIN2527, DIN2566, DIN2573, DIN2576, DIN2641, DIN2642, DIN2655, DIN2656, DIN2627, DIN2628, DIN2629, DIN 2631, DIN2632, DIN2633, DIN2634, DIN2635, DIN2636, DIN2637, DIN2638, DIN2673
B.S	:	BS4504 , BS4504, BS1560, BS10

Grades :

Stainless Steel Reducing Flanges :

ASTM A 182, A 240, F 304, 304L, 304H, 316, 316L, 316Ti, 310, 310S, 321, 321H, 317, 347, 347H, 904L.

ASME B16.5 Reducing Flanges Dimension

stainless steel orifice flange manufacturers

Orifice Flanges are used with orifice meters for the purpose of measuring the flow rate of either liquids or gases in the respective pipeline. Orifice flanges generally come with either raised faces or RTJ (Ring Type Joint) facings. They are, for all intensive purposes, the same as weld neck and slip-on flanges with extra machining. They have modifications of radial tapped holes in the flange ring for meter connections and orifice plate carriers for the reason of fitting meter connections. The additional bolts act as a jack to allow the separation of the two flanges to change the orifice plate or for other inspection services. We offers these flanges in stainless steel material.

Specification	ASTM B366, ASTM SB 366, ASTM B564, ASME SB564
Grade	ASTM A182 F202, F304/304L/304H, F316/316L, F316H, F316TI, F310, F321, F904L
Standard	ANSI Flanges, ASME Flanges, BS Flanges, DIN Flanges, EN Flanges, etc.
Size	1/8″ to 36″/
Dimensions	ANSI/ASME B16.5, B 16.47 Series A & B, B16.48, BS4504, BS 10, EN-1092, DIN, etc.
Class / Pressure	150#, 300#, 600#, 900#, 1500#, 2500#, PN6, PN10, PN16, PN25, PN40, PN64 etc.

stainless steel loose flange

Stainless steel loose flanges – type 02, PN 10, EN 1092-1

Available in grades: 1.4301 (304), 1.4307 (304L), 1.4541 (321), 1.4571 (316Ti), 1.4404 (316L).

Dw* – for tubes with ISO diameters

DN	Outside diameter	Bore diameter	Thickness	Diameter for bolt circle	Bolting		Diameter for bolt hole	Weight kg
DN	Dz	Dw*	g	Dp	Number	Size	Do	Weight kg
10	90	21	14	60	4	M12	14	0.591
15	95	25	14	65	4	M12	14	0.654
20	105	31	16	75	4	M12	14	0.909
25	115	38	16	85	4	M12	14	1.08
32	140	47	18	100	4	M16	18	1.77
40	150	53	18	110	4	M16	18	2.02
50	165	61	20	125	4	M16	18	2.52
65	185	81	20	145	8	M16	18	3.05
80	200	94	20	160	8	M16	18	3.48
100	220	120	22	180	8	M16	18	4.2
125	250	145	22	210	8	M16	18	5.21
150	285	174	24	240	8	M20	22	6.89
200	340	226	24	295	8	M20	22	8.87
250	395	281	26	350	12	M20	22	11.2
300	445	333	26	400	12	M20	22	12.8
350	505	365	30	460	16	M20	22	19.4
400	565	416	32	515	16	M24	26	26.4
450	615	467	36	565	20	M24	26	32.2
500	670	519	38	620	20	M24	26	38.5
600	780	622	42	725	20	M27	30	52.2
700	895	721	50	840	24	M27	30	79.4
800	1015	824	56	950	24	M30	33	112.0
900	1115	926	62	1050	28	M30	33	135.0
1000	1230	1028	70	1160	28	M33	36	180.0

stainless steel flange weight chart

ANSI B16.5 -½ “-24” Forged Flanges

CLASS	Nominal Pipe Size	Slip On	Threaded	Socket Weld	Lap Joint	Blind	Weld Neck
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

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