ASTM A403 ASME B16.9 Factory-Made Wrought Buttwelding Fittings

Name: ASTM A403 ASME B16.9 Factory-Made Wrought Buttwelding Fittings
Brand: Wenzhou Kidy Pipeline Materials Co., Ltd.

In pipeline systems, welded pipe fittings are pressure pipeline components used to change the direction or diameter of pipelines, branch pipelines, and achieve special connection functions in production equipment such as petrochemical and power plants. They are fittings connected to pipes through welding, especially suitable for long pipelines and pipelines that do not require frequent disassembly. Due to changes in the flow direction and flow area of the medium at its installation location, its internal and external stress situations are relatively complex. Therefore, the quality level of the pipe fittings directly affects the safe and stable operation of the entire pipeline system. They have multiple product types to choose from, such as 90 ° elbows, 45 ° elbows, tees, tees, caps, concentric reducers, eccentric reducers, and flanged short joints. All products in this category of the company comply with ASTM A403, ASEM B16.9, and ASTM A234 standards. Welded pipe fittings are mainly suitable for high-pressure pipelines that require high pressure in petrochemical, pharmaceutical and health, power, aerospace, fire protection, metallurgy, shipbuilding, gas, nuclear power, and environmental protection, as well as equipment with precise size requirements and various other high-pressure fields.

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Specifications of ASTM A403 ASME B16.9 Factory-Made Wrought Buttwelding Fittings

Table 1 Chemical Requirements

Note 1—Where an ellipsis (...) appears in this table, there is no requirement.
Grade_A		Composition, %
Grade WP	Grade CR	UNS Designation	C_B	Mn_B	P_B	S_B	Si_B	Ni	Cr	Mo	Ti	N₂C_C	Others
WPXM19	CRXM19	S20910	0.06	4.0-6.0	0.045	0.030	1.00	11.5-13.5	20.5-23.5	1.50-3.00	...	0.20-0.40	D

WP304	CR304	S30400	0.08	2.00	0.045	0.030	1.00	8.0-11.0	18.0-20.0	...	...
WP304L	CR304L	S30403	0.030_E	2.00	0.045	0.030	1.00	8.0-12.0	18.0-20.0	...	...
WP304H	CR304H	S30409	0.04-0.10	2.00	0.045	0.030	1.00	8.0-11.0	18.0-20.0	...	...
WP304N	CR304N	S30451	0.08	2.00	0.045	0.030	1.00	8.0-11.0	18.0-20.0	...	...	0.10-0.16

WP304LN	CR304LN	S30453	0.030	2.00	0.045	0.030	1.00	8.0-11.0	18.0-20.0	...	...	0.10-0.16

WP309	CR309	S30900	0.20	2.00	0.045	0.030	1.00	12.0-15.0	22.0-24.0	...	...
WP310S	CR310S	S31008	0.08	2.00	0.045	0.030	1.00	19.0-22.0	24.0-26.0	...	...
WPS31254	CRS31254	S31254	0.020	1.00	0.030	0.010	0.80	17.5-18.5	19.5-20.5	6.0-6.5	...	0.18-0.22	Cu 0.50-1.00

WP316	CR316	S31600	0.08	2.00	0.045	0.030	1.00	10.0-14.0	16.0-18.0	2.00-3.00	...
WP316L	CR316L	S31603	0.030_E	2.00	0.045	0.030	1.00	10.0-14.0_F	16.0-18.0	2.00-3.00	...
WP316H	CR316H	S31609	0.04-0.10	2.00	0.045	0.030	1.00	10.0-14.0	16.0-18.0	2.00-3.00	...
WP316N	CR316N	S31651	0.08	2.00	0.045	0.030	1.00	10.0-13.0	16.0-18.0	2.00-3.00	...	0.10-0.16

WP316LN	CR316LN	S31653	0.030	2.00	0.045	0.030	1.00	10.0-13.0	16.0-18.0	2.00-3.00	...	0.10-0.16

WP317	CR317	S31700	0.08	2.00	0.045	0.030	1.00	11.0-15.0	18.0-20.0	3.0-4.0	...
WP317L	CR317L	S31703	0.030	2.00	0.045	0.030	1.00	11.0-15.0	18.0-20.0	3.0-4.0	...
WPS31725	CRS31725	S31725	0.030	2.00	0.045	0.030	1.00	13.5-17.5	18.0-20.0	4.0-5.0	...	0.20
WPS31726	CRS31726	S31726	0.030	2.00	0.045	0.030	1.00	13.5-17.5	17.0-20.0	4.0-5.0	...	0.10-0.20

WP321	CR321	S32100	0.08	2.00	0.045	0.030	1.00	9.0-12.0	17.0-19.0	...	G	...
WP321H	CR321H	S32109	0.04-0.10	2.00	0.045	0.030	1.00	9.0-12.0	17.0-19.0	...	H	...
WPS33228	CRS33228	S33228	0.04-0.08	1.00	0.030	0.015	0.30	31.0-33.0	26.0-28.0	...	...		Ce 0.05-0.10 AI 0.025 Cb 0.6-1.0

WPS34565	CRS34565	S34565	0.030	5.0-7.0	0.030	0.010	1.00	16.0-18.0	23.0-25.0	4.0-5.0	...	0.40-0.60	Cb 0.10

WP347	CR347	S34700	0.08	2.00	0.045	0.030	1.00	9.0-12.0	17.0-19.0	...	...	...	I
WP347H	CR347H	S34709	0.04-0.10	2.00	0.045	0.030	1.00	9.0-12.0	17.0-19.0	...	...	...	J
WP348	CR348	S34800	0.08	2.00	0.045	0.030	1.00	9.0-12.0	17.0-19.0	...	...	...	Cb+Ta=10×(C)-1.10 Ta0.10 Co 0.20

WP348H	CR348H	S34809	0.04-0.10	2.00	0.045	0.030	1.00	9.0-12.0	17.0-19.0	...	...	...	Cb+Ta=8×(C)-1.10 Ta 0.10 Co 0.20

WPS38815	CRS38815	S38815	0.030	2.00	0.040	0.020	5.5-6.5	13.0-17.0	13.0-15.0	0.75-1.50	...	...	Cu 0.75-1.50 Al 0.30

A. See Section 15 for marking requirements.

B. Maximum, unless otherwise indicated.

C. The method of analysis for nitrogen shall be a matter of agreement between the purchaser and manufacturer.

D. Columbium 0.10-0.30 %; Vanadium, 0.10-0.30%.

E. For small diameter or thin walls, or both, where many drawing passes are required, a carbon maximum of 0.040% is necessary in grades TP304L and TP316L. Small outside diameter tubes are defined as those less than 0.500 in. [12.1 mm] in our side diameter and light wall tubes as those less than 0.049 in. [1.24 mm] in average wall thickness.

F. On pierced tubing, the nickel may be 11.0-16.0%.

G. 5x(C+N₂)-0.70.

H. 4x(C+N₂)-0.70.

I. The columbium content shall be not less than ten times the carbon content and not more than 1.10%.

J. The columbium content shall be not less than eight times the carbon content and not more than 1.10%.

Table 2 Dimensions of Long Radius Elbows

Dimensions of Long Radius Elbows

Nominal Pipe Size(NPS)	Outside Diameter at Bevel	Center-to-End
Nominal Pipe Size(NPS)	Outside Diameter at Bevel	90-deg Elbows, A	45-deg Elbows, B
½	21.3	38	16
¾	26.7	38	19
1	33.4	38	22
1¼	42.2	48	25
1½	48.3	57	29

2	60.3	76	35
2½	73.0	95	44
3	88.9	114	51
3½	101.6	133	57
4	114.3	152	64

5	141.3	190	79
6	168.3	229	95
8	219.1	305	127
10	273.0	381	159
12	323.8	457	190

14	355.6	533	222
16	406.4	610	254
18	457.0	686	286
20	508.0	762	318
22	559.0	838	343

24	610.0	914	381
26	660.0	991	406
28	711.0	1 067	438
30	762.0	1 143	470
32	813.0	1 219	502

34	864.0	1 295	533
36	914.0	1 372	565
38	965.0	1448	600
40	1 016.0	1 524	632
42	1 067.0	1 600	660

44	1 118.0	1 676	695
46	1 168.0	1 753	727
48	1 219.0	1 829	759

GENERAL NOTE: All dimensions are in millimeters.

Table 3 Dimensions of Long Radius Reducing Elbows

Dimensions of Long Radius Reducing Elbows

Nominal Pipe Size (NPS)	Outside Diameter at Bevel		Center- to-End, A	Nominal Pipe Size (NPS)	Outside Diameter at Bevel		Center to-End, A
Nominal Pipe Size (NPS)	Large End	Small End	Center- to-End, A	Nominal Pipe Size (NPS)	Large End	Small End	Center to-End, A
2 × 1½	60.3	48.3	76	10 × 8	273.0	219.1	381
2 × 1¼	60.3	42.2	76	10 × 6	273.0	168.3	381
2 × 1	60.3	33.4	76	10 × 5	273.0	141.3	381

2½ × 2	73.0	60.3	95	12 × 10	323.8	273.0	457
2½ × 1½	73.0	48.3	95	12 × 8	323.8	219.1	457
2½ × 1¼	73.0	42.2	95	12 × 6	323.8	168.3	457

3 × 2½	88.9	73.0	114	14 × 12	355.6	323.8	533
3 × 2	88.9	60.3	114	14 × 10	355.6	273.0	533
3 × 1½	88.9	48.3	114	14 × 8	355.6	219.1	533

3½ × 3	101.6	88.9	133	16 × 14	406.4	355.6	610
3½ × 2½	101.6	73.0	133	16 × 12	406.4	323.8	610
3½ × 2	101.6	60.3	133	16 × 10	406.4	273.0	610

4 × 3½	114.3	101.6	152	18 × 16	457.0	406.4	686
4 × 3	114.3	88.9	152	18 × 14	457.0	355.6	686
4 × 2½	114.3	73.0	152	18 × 12	457.0	323.8	686
4 × 2	114.3	60.3	152	18 × 10	457.0	273.0	686

5 × 4	141.3	114.3	190	20 × 18	508.0	457.0	762
5 × 3½	141.3	101.6	190	20 × 16	508.0	406.4	762
5 × 3	141.3	88.9	190	20 × 14	508.0	355.6	762
5 × 2½	141.3	73.0	190	20 × 12	508.0	323.8	762
				20 × 10	508.0	273.0	762
6 × 5	168.3	141.3	229
6 × 4	168.3	114.3	229	24 × 22	610	559	914
6 × 3½	168.3	101.6	229	24 × 20	610	508	914
6 × 3	168.3	88.9	229	24 × 18	610	457	914
				24 × 16	610	406.4	914
8 × 6	219.1	168.3	305	24 × 14	610	355.6	914
8 × 5	219.1	141.3	305	24 × 12	610	323.8	914
8 × 4	219.1	114.3	305	...	...	...	...

GENERAL NOTE: All dimensions are in millimeters.

Table 4 Dimensions of Long Radius Returns

Dimensions of Long Radius Returns

Nominal Pipe Size (NPS)	0ut side Diameter at Bevel	Center-to-Center, O	Badke to Face, K
½	21.3	76	48
¾	26.7	76	51
1	33.4	76	56
1¼	42.2	95	70
1½	48.3	114	83

2	60.3	152	106
2½	73	190	132
3	88.9	229	159
3½	101.6	267	184
4	114.3	305	210

5	141.3	381	262
6	168.3	457	313
8	219.1	610	414
10	273	762	518
12	323.8	914	619

14	355.6	1 067	711
16	406.4	1 219	813
18	457	1 372	914
20	508	1 524	1 016
22	559	1 676	1 118
24	610	1 829	1 219

GENERAL NOTE: All dimensions are in millimeters.

NOTE:

(1) See Table 13 for tolerance for alignment of ends U.

(2) Dimension A is equal to one-half of dimension O.

Table 5 Dimensions of Short Radius Elbows

Dimensions of Short Radius Elbows

Nominal Pipe Size (NPS)	Outside Diameter at Bevel	Center-to-End, A
1	33.4	25
1¼	42.2	32
1½	48.3	38
2	60.3	51
2½	73.0	64

3	88.9	76
3½	101.6	89
4	114.3	102
5	141.3	127
6	168.3	152

8	219.1	203
10	273.0	254
12	323.8	305
14	355.6	356
16	406.4	406

18	457.0	457
20	508.0	508
22	559.0	559
24	610.0	610

GENERAL NOTE: All dimensions are in millimeters.

Table 6 Dimensions of Short Radius 180-deg Returns

Dimensions of Short Radius 180-deg Returns

Nominal Pipe Size (NPS)	Outside Diameter at Bevel	Center- to-Center, O	Back to Face, K
1	33.4	51	41
1¼	42.2	64	52
1½	48.3	76	62
2	60.3	102	81
2½	73	127	100

3	88.9	152	121
3½	101.6	178	140
4	114.3	203	159
5	141.3	254	197
6	168.3	305	237

8	219.1	406	313
10	273.0	508	391
12	323.8	610	467
14	355.6	711	533
16	406.4	813	610

18	457.0	914	686
20	508.0	1 016	762
22	559.0	1 118	838
24	610.0	1 219	914

GENERAL NOTES:

(a) All dimensions are in millimeters.

(b) Dimension A is equal to one-half of dimension O.

Table 7 Dimensions of 3D Elbows

Dimensions of 3D Elbows

Nominal Pipe Size (NPS)	Outside Diameter at Bevel	Center-to-End
Nominal Pipe Size (NPS)	Outside Diameter at Bevel	90-deg Elbows, A	45-deg Elbows, B
¾	26.7	57	24
1	33.4	76	31
1¼	42.2	95	39
1½	48.3	114	47

2	60.3	152	63
2½	73.0	190	79
3	88.9	229	95
3½	101.6	267	111
4	114.3	305	127

5	141.3	381	157
6	168.3	457	189
8	219.1	610	252
10	273.0	762	316
12	323.8	914	378

14	355.6	1 067	441
16	406.4	1 219	505
18	457.0	1 372	568
20	508.0	1 524	632
22	559.0	1 676	694

24	610.0	1 829	757
26	660.0	1 981	821
28	711.0	2 134	883
30	762.0	2 286	964
32	813.0	2 438	1 010

34	864.0	2 591	1 073
36	914.0	2 743	1 135
38	965.0	2 896	1 200
40	1 016.0	3 048	1 264
42	1 067.0	3 200	1 326

44	1 118.0	3 353	1 389
46	1 168.0	3 505	1 453
48	1 219.0	3 658	1 516

GENERAL NOTES: All dimensions are in millimeters.

Table 8 Dimensions of Straight Tees and Crosses

Dimensions of Straight Tees and Crosses

Nominal Pipe Size (NPS)	Outside Diameter at Bevel	Center-to-End
Nominal Pipe Size (NPS)	Outside Diameter at Bevel	Run, C	Outlet, M [Notes (1) and (2)]
½	21.3	25	25
¾	26.7	29	29
1	33.4	38	38
1¼	42.2	48	48
1½	48.3	57	57

2	60.3	64	64
2½	73.0	76	76
3	88.9	86	86
3½	101.6	95	95
4	114.3	105	105

5	141.3	124	124
6	168.3	143	143
8	219.1	178	178
10	273.0	216	216
12	323.8	254	254

14	355.6	279	279
16	406.4	305	305
18	457.0	343	343
20	508.0	381	381
22	559.0	419	419

24	610.0	432	432
26	660.0	495	495
28	771.0	521	521
30	762.0	559	559
32	813.0	597	597

34	864.0	635	635
36	914.0	673	673
38	965.0	711	711
40	1 016.0	749	749
42	1 067.0	762	711

44	1 118.0	813	762
46	1 168.0	851	800
48	1 219.0	889	838

GENERAL NOTE: All dimensions are in millimeters.

NOTES:

(1) Outlet dimension M for NPS 26 and larger is recommended but not required.

(2) Dimensions applicable to crosses NPS 24 and smaller.

Table 9 Dimensions of Lap Joint Stub Ends

Dimensions of Lap Joint Stub Ends

Nominal Pipe Size (NPS)	Outside Diameter at Bevel		Long Pattern Length, F [Notes (3), (4)]	Short Pattern Length, F [Notes (3), (4)]	Radius of FiIllet, R [Note (5)]	Diameter of Lap, G [Note (6)]
Nominal Pipe Size (NPS)	Max.	Min.	Long Pattern Length, F [Notes (3), (4)]	Short Pattern Length, F [Notes (3), (4)]	Radius of FiIllet, R [Note (5)]	Diameter of Lap, G [Note (6)]
½	22.8	20.5	76	51	3	35
¾	28.1	25.9	76	51	3	43
1	35.0	32.6	102	51	3	51
1¼	43.6	41.4	102	51	5	64
1½	49.9	47.5	102	51	6	73

2	62.4	59.5	152	64	8	92
2½	75.3	72.2	152	64	8	105
3	91.3	88.1	152	64	10	127
3½	104.0	100.8	152	76	10	140
4	116.7	113.5	152	76	11	157

5	144.3	140.5	203	76	11	186
6	171.3	167.5	203	89	13	216
8	222.1	218.3	203	102	13	270
10	277.2	272.3	254	127	13	324
12	328.0	323.1	254	152	13	381

14	359.9	354.8	305	152	13	413
16	411.0	405.6	305	152	13	470
18	462.0	456.0	305	152	13	533
20	514.0	507.0	305	152	13	584
22	565.0	558.0	305	152	13	641
24	616.0	609.0	305	152	13	692

GENERAL NOTES:

(a) All dimensions are in millimeters.

(b) See Table 13 for tolerances.

(c) Service conditions and joint construction often dictate stub end length requirements. Therefore, the purchaser must specify long or short pattern fitting when ordering.

NOTES:

(1) Gasket face finish shall be in accordance with ASME B16.5 for raised face flanges.

(2) The lap thickness T shall not be less than the nominal pipe wall thickness. See Table 13 for maximum tolerance.

(3) When short pattern stub ends are used with larger flanges in classes 300 and 600, with most sizes in Classes 900 and higher, and when long pattern stub ends are used with larger flanges in Classes 1500 and 2500, it may be necessary to increase the length of the stub ends in order to avoid covering the weld with the flange. Such increases in length should be a matter of agreement between the manufacturer and purchaser.

(4) When special facings such as tongue and groove, male and female, etc, are employed, additional lap thickness must be printed and such additional thickness shall be in addition to (not included in) the basic length F.

(5) These dimensions conform to the radius established for lap joint flanges in ASME B16.5.

(6) This dimension conforms to standard machined facings shown in ASME B16.5. The back face of the lap shall be machined to conform to the surface on which it seats. Where ring joint facings are to be applied, use dimension K as given in ASME B16.5.

Table 10 Dimensions of Caps

Dimensions of Caps

Nominal Pipe Size (NPS)	Outside Diameter at Bevel	Length, E [Notes (1)]	Limiting Wall Thickness for Length, E	Length, E¹ [Notes (2)]
½	21.3	25	4.57	25
¾	26.7	25	3.81	25
1	33.4	38	4.57	38
1¼	42.2	38	4.83	38
1½	48.3	38	5.08	38

2	60.3	38	5.59	44
2½	73.0	38	7.11	51
3	88.9	51	7.62	64
3½	101.6	64	8.13	76
4	114.3	64	8.64	76

5	141.3	76	9.65	89
6	168.3	89	10.92	102
8	219.1	102	12.70	127
10	273.0	127	12.70	152
12	323.8	152	12.70	178

14	355.6	165	12.70	191
16	406.4	178	12.70	203
18	457.0	203	12.70	229
20	508.0	229	12.70	254
22	559.0	254	12.70	254

24	610.0	267	12.70	305
26	660.0	267	...	...
28	711.0	267	...	...
30	762.0	267	...	...
32	813.0	267	...	...

34	864.0	267	...	...
36	914.0	267	...	...
38	965.0	305	...	...
40	1 016.0	305	...	...
42	1 067.0	305	...	...

44	1 118.0	343	...	...
46	1 168.0	343	...	...
48	1 219.0	343	...	...

GENERAL NOTES:

(a) All dimensions are in millimeters.

(b) The shape of these caps shall be ellipsoidal and shall conform to the requirements given in the ASME Boiler and Pressure Vessel Code.

NOTES:

(1) Length E applies for thickness not exceeding that given in column "Limiting wal Thickness for Length, E.”

(2) Length E¹ applies for thickness greater than that given in column“Limiting wall Thickness" for NPS 24 and smaller. For NPS 26 and larger, length E¹ shall be by agreement between the manufacturer and purchaser.

Features of ASTM A403 ASME B16.9 Factory-Made Wrought Buttwelding Fittings

KIDY is a service-oriented enterprise that provides fittings for changing the direction of pipelines in pipeline systems. Butt welded elbows are made by welding two steel plates. Generally, large-diameter elbows are butt welded, so in industrial applications, elbows with a diameter of 600 or above are mostly butt welded. 90 ° butt welded elbows can be divided into long radius (LR) elbows and short radius (SR) elbows based on the bending radius. Other commonly used elbows in fluid pipeline engineering construction include 45 ° elbows and 180 ° elbows. Our company can also customize other non-standard elbows according to engineering needs.

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