Stainless Steel 321 Pipe Fittings

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Specification List of Stainless Steel 321 Pipe Fittings A403 Wp321/ 321h Chemical Composition Mechanical Behaviour of ASTM A403 WP321/ 321h Elbow Equivalent of A403 Wp321/ 321h Material Dimension of UNS S32100 Buttweld Fitting Dimension Table of ASME SA 403 WP 321H Pipe Reducer A403 Gr Wp321 Tee, Cap, Stub End Dimensions Weight Chart of 321H stainless steel pipe fittings SS 321 3D Bend Tolerance chart Sa403 Wp321 Elbow Angularity Tolerance

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Stainless Steel 321 Pipe Fittings in Detail

Technical Data

Full Specifications

›Technical Data

Specification List of Stainless Steel 321 Pipe Fittings

Specifications	ASTM A403
size	Seamless Butt Weld Fittings: 1/2" - 10" / Welded Butt Weld Fittings: 1/2" - 48"
Connection	Welding
Manufacturing process	Push, Press, Forge, Cast, etc.
Test Certificates	EN 10204/3.1B / Raw Materials Certificate / 100% Radiography Test Report / Third Party Inspection Report, etc
Dimensions	ASME/ANSI B16.9, ASME B16.28, MSS-SP-43, BS4504, BS4504, BS1560, BS10
Size Range	½" NB to 24" NB in Sch 10s, 40s, 80s, 160s, XXS. (DN6~DN100) ASTM A403 Stainless Steel Buttweld Fitting
Thickness	SCH10, SCH20, SCH30, STD SCH40, SCH60, XS, SCH 80, SCH 100, SCH 120, SCH 140, SCH 160, XXS available with NACE MR 01-75
Bending Radius	R=1D, 2D, 3D, 5D, 6D, 8D, 10D or Custom MSS Sp-43
Elbows	Angle : 22.5 deg, 30deg, 45 deg, 90 deg, 180 deg, 1.0D, 1.5D, 2.0D, 2.5D, 3D, 4D, 5D, 6D, 7D-40D . / Standard: ASME B16.9, ASME B16.28, ASME B16.25, MSS SP-75 DIN2605 JISB2311 JISB2312 JISB2313, BS, GB, ISO
Type	DN15-DN1200
Origin & Mills	Japanese, Indian, USA, Korean, European, Ukraine, Russian
Key markets and industries	Bitumen upgraders. Heavy oil refineries. Nuclear power (mostly seamless). Petrochemicals and acids.
Export to	Saudi Arabia, Spain, Oman, Dubai, Singapore, Korea, Iran, India, Thailand, Egypt, Ukraine, Brazil, Canada, Ireland, Indonesia, USA, Peru, etc
Specialized manufacturer of	90º Elbows, 45º Elbows, Tees, Crosses, Reducers, Pipe Cap, Stub End, Pipe Bend
We provide Material Test Certificates (MTC) as per EN 10204 3.1 and EN 10204 3.2, Test Certificates certifying NACE MR0103, NACE MR0175	We provide Material Test Certificates (MTC) as per EN 10204 3.1 and EN 10204 3.2, Test Certificates certifying NACE MR0103, NACE MR0175

Equivalent of A403 Wp321/ 321h Material

col_1	col_2	col_3	col_4	col_5
STANDARD	WERKSTOFF NR.	UNS	JIS	EN
SS 321	1.4541	S32100	SUS 321	X6CrNiTi18-10

Check what we supply in Africa & Europe

col_1	col_2
321 Stainless Steel Buttweld Fittings	Indonesia, Belgium, Dammam -KSA, Philippines
Seamless 90D LR Elbow, SATM A403 WP321, 8 Inch, SCH 10S, BE	France, Thailand, Qatar, Europe
321h dn 80 stainless steel straight tee 3inch	Germany, Malaysia, Czechia, Thailand
Stainless Steel 1.4541 Short Stub End	USA, Finland, Malaysia, Bangladesh
Long Radius Elbow, 180D, ASTM A403 WP321, 4 Inch	Saudi Arabia (KSA), Brazil, South Africa, Kuwait
14 in. 10S 321 Stainless Steel Tee	South Africa, Singapore, Bahrain, Singapore
AISI 321 stainless steel Reducing Tee	Australia, Nigeria, Philippines, UK
ASME SA403 WP321 Short Radius Elbow	Malaysia, UAE, Oman, Hong Kong
1/2 in. Butt Weld Schedule 40 321 Stainless Steel Long Radius 45 Degree Elbow	Italy, Singapore, Chile, Iran
16mm - 200mm diameter ID/OD polished reducer 321 stainless steel	Turkey, Malaysia, United Arab Emirates (UAE), Norway
Stainless Steel B16.9 321 SCH 10S Equal Tee	Malaysia, Dubai, Netherlands, Russia
Stainless steel 321 butt welding concentric reducer	Spain, UK, Egypt, Mexico
ASTM A403 WP321 Seamless Elbow, ASME B16.9, SCH 10S, 3 Inch	Europe, UAE, United Kingdom -UK, Malaysia
SAE 321 stainless steel Eccentric Reducer	Canada, Ellington -United States, UK, Poland
4 inch stainless steel 90 degree elbow	Malaysia, Singapore, Philippines, Canada
10 inch SS 321 Elbow	Colombia, China, Sweden, Malaysia

›Material Properties

A403 Wp321/ 321h Chemical Composition

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col_1	col_2	col_3	col_4	col_5	col_6	col_7	col_8	col_9	col_10
Grade	C	Mn	Si	P	S	Cr	N	Ni	Ti
SS 321	0.08 max	2.0 max	1.0 max	0.045 max	0.030 max	17.00 – 19.00	0.10 max	9.00 – 12.00	5(C+N) ? 0.70 max

Mechanical Behaviour of ASTM A403 WP321/ 321h Elbow

col_1	col_2	col_3	col_4	col_5
Density	Melting Point	Tensile Strength	Yield Strength (0.2%Offset)	Elongation
8.0 g/cm3	1457 °C (2650 °F)	Psi – 75000 , MPa – 515	Psi – 30000 , MPa – 205	35 %

›Dimensions & Weight

Dimension of UNS S32100 Buttweld Fitting

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Nominal / Pipe / Size	Outside / Diameter	Outside / Diameter_2	90° Elbows	90° Elbows_2	45° Elbows	45° Elbows_2	180° Returns	180° Returns_2
(inches)			Long Radius	Short Radius	Long Radius	Long Radius	Long Radius	Long Radius
	(mm)	(inches)	Center to Face / (inches)	Center to Face / (inches)	Center to Face / (inches)	Radius / (inches)	Center to Center / (inches)	Back to face / (inches)
1/2	21.3	0.840	1 1/2	–	5/8		2	1 7/8
3/4	26.7	1.050	1 1/8	–	7/16		2 1/4	1 11/16
1	33.4	1.315	1 1/2	1	7/8		3	2 3/16
1 1/4	42.2	1.660	1 7/8	1 1/4	1		3 3/4	2 3/4
1 1/2	48.3	1.900	2 1/4	1 1/2	1 1/8	3	4 1/2	3 1/4
2	60.3	2.375	3	2	1 3/8	4	6	4 3/16
2 1/2	73.0	2.875	3 3/4	2 1/2	1 3/4	5	7 1/2	5 3/16
3	88.9	3.500	4 1/2	3	2	6	9	6 1/4
3 1/2	101.6	4.000	5 1/4	3 1/2	2 1/4	7	10 1/2	7 1/4
4	114.3	4.500	6	4	2 1/2	8	12	8 1/4
5	141.3	5.563	7 1/2	5	3 1/8	10	15	10 5/16
6	168.3	6.625	9	6	3 3/4	12	18	12 5/16
8	219.1	8.625	12	8	5	12	24	16 5/16
10	273.1	10.750	15	10	6 1/4	15	30	20 3/8
12	323.9	12.750	18	12	7 1/2	18	36	24 3/8

Dimension Table of ASME SA 403 WP 321H Pipe Reducer

Nominal / Pipe Size	Outside / Diameter	Outside / Diameter_2	Reducers	Reducers_2
Reduced from / (inches)	(mm)	(inches)	Reduced to / (inches)	Concentric & Eccentric Length / (inches)
1/2	21.3	0.840	1/4	1 1/2
1/2	21.3	0.840	3/8	1 1/2
3/4	26.7	1.050	3/8	2
3/4	26.7	1.050	1/2	2
1	33.4	1.315	3/8	2
1	33.4	1.315	1/2	2
1	33.4	1.315	3/4	2
1 1/4	42.2	1.660	1/2	2
1 1/4	42.2	1.660	3/4	2
1 1/4	42.2	1.660	1	2
1 1/2	48.3	1.900	1/2	2 1/2
1 1/2	48.3	1.900	3/4	2 1/2
1 1/2	48.3	1.900	1	2 1/2
1 1/2	48.3	1.900	1 1/4	2 1/2
2	60.3	2.375	3/4	3
2	60.3	2.375	1	3
2	60.3	2.375	1 1/4	3
2	60.3	2.375	1 1/2	3
2 1/2	73.0	2.875	1	3 1/2
2 1/2	73.0	2.875	1 1/4	3 1/2
2 1/2	73.0	2.875	1 1/2	3 1/2
2 1/2	73.0	2.875	2	3 1/2
3	88.9	3.500	1	3 1/2
3	88.9	3.500	1 1/2	3 1/2
3	88.9	3.500	2	3 1/2
3	88.9	3.500	2 1/2	3 1/2
3 1/2	101.6	4.000	1 1/4	4
3 1/2	101.6	4.000	1 1/2	4
3 1/2	101.6	4.000	2	4
3 1/2	101.6	4.000	2 1/2	4
3 1/2	101.6	4.000	3	4
4	114.3	4.500	1 1/2	4
4	114.3	4.500	2	4
4	114.3	4.500	2 1/2	4
4	114.3	4.500	3	4
4	114.3	4.500	3 1/2	4
5	141.3	5.563	2	5
5	141.3	5.563	2 1/2	5
5	141.3	5.563	3	5
5	141.3	5.563	3 1/2	5
5	141.3	5.563	4	5
6	168.3	6.625	2 1/2	5 1/2
6	168.3	6.625	3	5 1/2
6	168.3	6.625	3 1/2	5 1/2
6	168.3	6.625	4	5 1/2
6	168.3	6.625	5	5 1/2
8	219.1	8.625	3	6
8	219.1	8.625	3 1/2	6
8	219.1	8.625	4	6
8	219.1	8.625	5	6
8	219.1	8.625	6	6
10	273.1	10.750	4	7
10	273.1	10.750	5	7
10	273.1	10.750	6	7
10	273.1	10.750	8	7
12	323.9	12.750	5	8
12	323.9	12.750	6	8
12	323.9	12.750	8	8
12	323.9	12.750	10	8

A403 Gr Wp321 Tee, Cap, Stub End Dimensions

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Nominal / Pipe / Size	Outside / Diameter	Outside / Diameter_2	Caps	Straight Tees	Straight Crosses	Stub Ends	Stub Ends_2	Stub Ends_3
(inches)	(mm)	(inches)	Length / (inches)	Center to End / (inches)	Center to End / (inches)	Lap Diameter / (inches)	Long Length / (inches)	Short Length / (inches)
1/2	21.3	0.840	1	1	–	1 3/8	3	2
3/4	26.7	1.050	1	1 1/8	–	1 11/16	3	2
1	33.4	1.315	1 1/2	1 1/2	1 1/2	2	4	2
1 1/4	42.2	1.660	1 1/2	1 7/8	1 7/8	2 1/2	4	2
1 1/2	48.3	1.900	1 1/2	2 1/4	2 1/4	2 7/8	4	2
2	60.3	2.375	1 1/2	2 1/2	2 1/2	3 5/8	6	2 1/2
2 1/2	73.0	2.875	1 1/2	3	3	4 1/8	6	2 1/2
3	88.9	3.500	2	3 3/8	3 3/8	5	6	2 1/2
3 1/2	101.6	4.000	2 1/2	3 3/4	3 3/4	5 1/2	6	3
4	114.3	4.500	2 1/2	4 1/8	4 1/8	6 3/16	6	3
5	141.3	5.563	3	4 7/8	4 7/8	7 5/16	8	3
6	168.3	6.625	3 1/2	5 5/8	5 5/8	8 1/2	8	3 1/2
8	219.1	8.625	4	7	7	10 5/8	8	4
10	273.1	10.750	5	8 1/2	8 1/2	12 3/4	10	5
12	323.9	12.750	6	10	10	15	10	6

Weight Chart of 321H stainless steel pipe fittings

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col_1	col_2	col_3	col_4	col_5	col_6	col_7	col_8	col_9	col_10
DN	Schedule 10S	Schedule 10S	Schedule 10S	Schedule 40S	Schedule 40S	Schedule 40S	Schedule 80S	Schedule 80S	Schedule 80S
DN	900 Elbow	450 Elbow	Equal tee	900 Elbow	450 Elbow	Equal tee	900 Elbow	450 Elbow	Equal tee
8	0.02	0.01	0.03	0.03	0.02	0.06	0.04	0.03	0.07
10	0.03	0.02	0.05	0.03	0.02	0.03	0.06	0.04	0.09
15	0.06	0.03	0.09	0.08	0.04	0.10	0.10	0.05	0.14
20	0.07	0.03	0.13	0.08	0.04	0.17	0.11	0.05	0.20
25	0.14	0.08	0.28	0.15	0.11	0.29	0.22	0.14	0.38
32	0.23	0.11	0.49	0.26	0.17	0.59	0.40	0.23	0.68
40	0.30	0.17	0.68	0.40	0.23	0.86	0.51	0.29	1.02
50	0.50	0.25	0.85	0.70	0.4	1.28	0.91	0.59	1.59
65	0.85	0.48	1.41	1.40	0.77	2.19	1.81	0.99	3.13
80	1.25	0.63	1.77	2.20	1.08	3.31	2.97	1.50	4.45
90	1.70	0.75	2.67	2.83	1.42	4.08	4.00	2.00	5.44
100	2.10	1.08	3.46	4.47	2.09	5.27	6.18	2.81	7.71
150	5.45	2.72	8.07	10.89	5.44	10.99	16.32	8.16	13.61
200	10.20	5.33	15.65	21.54	10.77	20.91	33.11	16.56	28.12
250	18.15	9.75	26.46	38.56	19.27	35.38	51.71	25.86	49.90
300	25.80	13.62	39.46	59.42	29.71	62.14	79.38	39.69	83.91

›Tolerances

SS 321 3D Bend Tolerance chart

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Nominal Diameter	Nominal Diameter_2	O.D.For Bevel End	I.D.For End	Wall Thickness	Elbow	Elbow_2	Tee	Tee_2	Reducer	Cap	180°Elbow	180°Elbow_2	180°Elbow_3
DN	NPS	O.D.For Bevel End	I.D.For End	Wall Thickness	A	B	C	M	H	E	O	K	Roughness
15-65	1/2-2 1/2	+1.6/-0.8	0.8	-12.50%	1.6	1.6	1.6	1.6	1.6	3.2	6.4	6.4	0.8
80-100	3-4	1.6	1.6	-12.50%	1.6	1.6	1.6	1.6	1.6	6.4	6.4	6.4	0.8
125-200	5-8	+2.4/-1.6	1.6	-12.50%	1.6	1.6	1.6	1.6	1.6	6.4	6.4	6.4	0.8
250-450	10-18	+4/-3.2	3.2	-12.50%	2.4	2.4	2.4	2.4	2.4	6.4	9.6	6.4	0.8
500-600	20-24	+6.4/-4.8	4.8	-12.50%	3.2	3.2	3.2	3.2	4.8	9.6
650-750	26-30	+6.4/-4.8	4.8	-12.50%	3.2	3.2	3.2	3.2	4.8	9.6
650-750	26-30	+6.4/-4.8	4.8	-12.50%	4.8	4.8	4.8	4.8	4.8	9.6
800-1200	32-48	+6.4/-4.8	4.8	-12.50%	4.8	4.8	4.8	4.8	4.8	9.6
1250-1500	50-60	+9.6/-6.4	6.4	-12.50%	9.6	9.6	9.6	9.6	9.6
1550-1750	62-70	+12.7/-9.6	9.6	-12.50%	12.7	12.7
1800-2000	72-80	+16/-12	12	-12.50%	16	16

Sa403 Wp321 Elbow Angularity Tolerance

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Nominal Size	Nominal Size_2	DN	DN_2	DN_3	15-100	15-100_2	125-200	125-200_2	125-200_3	250-300	250-300_2	350-400	350-400_2	450-600	450-600_2	650-750	650-750_2	650-750_3	800-1050	800-1050_2	800-1050_3	1100-1200	1100-1200_2	1300-1500	1300-1500_2
Nominal Size	Nominal Size	NPS	NPS	NPS	1/2 - 4	1/2 - 4	5-8	5-8	5-8	10-12	10-12	14-16	14-16	18-24	18-24	26-30	26-30	26-30	32-42	32-42	32-42	44-48	44-48	52-60	52-60
Angularity / Tolerance	Off Angle	Q	Q	Q	1	1	2	2	2	3	3	3	3	4	4	5	5	5	5	5	5	5	5	6.4	6.4
Angularity / Tolerance	Off Plain	P	P	P	2	2	4	4	4	5	5	6	6	10	10	10	10	10	13	13	13	19	19	20	20

Stainless Steel 321 Pipe Fittings

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