Service Details

Buttweld Fittings


Buttweld fittings are usually made from seamless or welded pipes that are produced from materials such as stainless steel, carbon steel, alloy steel, or other metals suitable for specific operating conditions (e.g., temperature, pressure, corrosion resistance).

Buttweld fittings find applications across various industries including oil and gas, chemical processing, pharmaceuticals, food and beverage, power generation, and shipbuilding. They are preferred for their strong, leak-free connections and ability to withstand high temperatures and pressures. This manufacturing process ensures that buttweld fittings meet stringent quality standards and perform reliably in demanding industrial environments.


Buttweld Fittings Specification


Pipe Fittings Specifications ASTM A234/ ASME SA234 , ASTM A403
Pipe Fittings size Seamless Butt Weld Fittings : 1/2" - 16"
Welded Butt Weld Fittings : 1/2" - 48"
Pipe Fittings Dimensions ASME/ANSI B16.9, ASME B16.28,ASME B16.49.
Buttweld Fittings 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 To 10D
Buttweld Pipe Fittings Test Certificates EN 10204/3.1B
Raw Materials Certificate
100% Radiography Test Report
Third Party Inspection Report, etc
SA 403 Pipe Fittings Origin & Mills Japanese, Indian, USA, Korean, European, Ukraine, Russian
Specialized manufacturer of 90º Elbows, 45º Elbows, Tees, Cross, Reducer, 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

Material Common Grades Applications
Stainless Steel TP304, TP304L, TP304H Food processing, pharmaceuticals, chemical processing
TP316, TP316L, TP316H, TP316Ti Petrochemical, marine, medical devices
TP309, TP310S High-temperature applications, furnace parts
TP317L Pulp and paper industry, chemical processing
TP321, TP347 Aerospace, automotive, heat exchangers
TP904L Petrochemical, offshore oil platforms
Titanium ASTM B381: aerospace, marine, chemical processing, medical implants,
Gr 1, Gr 2, Gr 3, Gr 5 (6AL-4V), Gr 7, Gr 9, Aerospace, chemical processing, medical implants
Gr 11, Gr 12, Gr 23 (6AL-4V ELI) Marine applications, sports equipment
High Nickel Alloys ASTM B366: chemical processing, marine applications, aerospace, and high-temperature environments
Hastelloy, Nickel, Monel, Inconel, Incoloy, Chemical processing, aerospace, marine
Alloy 20, Cupro Nickel Oil and gas, power generation, pharmaceuticals
Duplex UNS S31803 & S32205 (2205) Chemical processing, desalination plants
Super Duplex UNS S32750 (2507) & S32760 Oil and gas offshore platforms, seawater handling
Alloy Steel ASTM A234 WP1, WP5, WP9, WP11, WP22 High-temperature and high-pressure applications
ASTM A420 WPL6 Low-temperature service
Carbon Steel ASTM A234 WPB, WPC General industrial applications
ASTM A420 WPL3, WPL9 Low-temperature service
Mild Steel BS 1640/BS 1965 Grade 320 General purpose applications
BS 1640/BS 1965 Grade 360 Structural and plumbing applications


Buttweld Fitting >> Elbow +

Nominal Diameter Outside Diameter Center to End Center to Center Back to Face
45°Elbow 90°Elbow 180°Elbow
B A O K
DN NPS (Inches) Series B (mm) Long Radius(mm) Long Radius(mm) Long Radius(mm) Long Radius(mm) Long Radius(mm) Long Radius(mm) Long Radius(mm) Long Radius(mm)

15

1/2

21.3

18

16

38

-

76

-

48

-

20

3/4

26.9

25

19

38

-

76

-

51

-

25

1

33.7

32

22

38

25

76

51

56

41

32

1.1/4

42.4

38

25

48

32

95

64

70

52

40

1.1/2

48.3

45

29

57

38

114

76

83

62

50

2

60.3

57

35

76

51

152

102

106

81

65

2.1/2

76.1(73)

76

44

95

64

190

127

132

100

80

3

88.9

89

51

114

76

229

152

159

121

90

3.1/2

101.6

-

57

133

89

267

178

184

140

100

4

114.3

108

64

152

102

305

203

210

159

125

5

139.7

133

79

190

127

381

254

262

197

150

6

168.3

159

95

229

152

457

305

313

237

200

8

219.1

219

127

305

203

610

406

414

313

250

10

273

273

159

381

254

762

508

518

391

300

12

323.9

325

190

457

305

914

610

619

467

350

14

355.6

377

222

533

356

1067

711

711

533

400

16

406.4

426

254

610

406

1219

813

813

610

450

18

457.2

478

286

686

457

1372

914

914

686

500

20

508

529

318

762

508

1524

1016

1016

762

550

22

559

-

343

838

559

1676

1118

1118

838

600

24

610

630

381

914

610

1829

1219

1219

914

650

26

660

-

406

991

660

1982

1320

-

-

700

28

711

720

438

1067

711

2134

1422

-

-

750

30

762

-

470

1143

762

2286

1524

-

-

Buttweld Fitting >> Reducer

Nominal Diameter

Outside Diameter

 End to End
D1*D2
DN

NPS

(Inches)

Series A

(mm)

"H"

(mm)

20×15

3/4×1/2

26.9×21.3

38

20×10

3/4×3/8

26.9×17.3

38

25×20

1×3/4

33.7×26.9

51

25×15

1×1/2

33.7×21.3

51

32×25

1.1/4×1

42.4×33.7

51

32×20

1.1/4×3/4

42.4×26.9

51

32×15

1.1/4×1/2

42.4×21.3

51

40×32

1.1/2×1.1/4

48.3×42.4

64

40×25

1.1/2×1

48.3×33.7

64

40×20

1.1/2×3/4

48.3×26.9

64

40×15

1.1/2×1/2

48.3×21.3

64

50×40

2×1.1/2

60.3×48.3

76

50×32

2×1.1/4

60.3×42.4

76

50×25

2×1

60.3×33.7

76

50×20

2×3/4

60.3×26.9

76

65×50

2.1/2×2

73.0×60.3

89

65×40

2.1/2×1.1/2

73.0×48.3

89

65×32

2.1/2×1.1/4

73.0×42.4

89

65×25

2.1/2×1

73.0×33.7

89

80×65

3×2.1/2

88.9×73.0

89

80×50

3×2

88.9×60.3

89

80×40

3×1.1/2

88.9×48.3

89

80×32

3×1.1/4

88.9×42.4

89

90×80

3.1/2×3

101.6×88.9

102

90×65

3.1/2×2.1/2

101.6×73.0

102

90×50

3.1/2×2

101.6×60.3

102

90×40

3.1/2×1.1/2

101.6×48.3

102

90×32

3.1/2×1.1/4

101.6×42.4

102

100×90

4×3.1/2

114.3×101.6

102

100×80

4×3

114.3×88.9

102

100×65

4×2.1/2

114.3×73.0

102

100×50

4×2

114.3×60.3

102

100×40

4×1.1/2

114.3×48.3

102

125×100

5×4

141.3×114.3

127

125×90

5×3.1/2

141.3×101.6

127

125×80

5×3

141.3×88.9

127

125×65

5×2.1/2

141.3×73.0

127

125×50

5×2

141.3×60.3

127

150×125

6×5

168.3×141.3

140

150×100

6×5

168.3×114.3

140

150×90

6×3.1/2

168.3×101.6

140

150×80

6×3

168.3×88.9

140

150×65

6×2.1/2

168.3×73.0

140

200×150

8×6

219.1×168.3

152

200×125

8×5

219.1×141.3

152

200×100

8×4

219.1×114.3

152

200×90

8×3.1/2

219.1×101.6

152

250×200

10×8

273.0×219.1

178

250×150

10×6

273.0×168.3

178

250×125

10×5

273.0×141.3

178

250×100

10×4

273.0×114.3

178

300×250

12×10

323.9×273.1

203

300×200

12×8

323.9×219.1

203

300×150

12×6

323.9×168.3

203

300×125

12×5

323.9×141.3

203

350×300

14×12

355.6×323.9

330

350×250

14×10

355.6×273.0

330

350×200

14×8

355.6×219.1

330

350×150

14×6

355.6×168.3

330

400×350

16×14

406.4×355.6

356

400×300

16×12

406.4×323.9

356

400×250

16×10

406.4×273.0

356

400×200

16×8

406.4×219.1

356

450×400

18×16

457×406.4

381

450×350

18×14

457×355.6

381

450×300

18×12

457×323.9

381

450×250

18×10

457×273.0

381

500×450

20×18

508×457

508

500×400

20×16

508×406.4

508

500×350

20×14

508×355.6

508

500×300

20×12

508×323.9

508

550×500

22×20

559×508

508

550×450

22×18

559×457

508

550×400

22×16

559×406.4

508

550×350

22×14

559×355.6

508

600×550

24×22

610×559

508

600×500

24×20

610×508

508

600×450

24×18

610×457

508

600×400

24×22

610×406.4

508

650×600

26×24

660×610

610

650×550

26×22

660×559

610

650×500

26×20

660×508

610

650×450

26×18

660×457

610

700×650

28×26

711×660

610

700×600

28×24

711×610

610

700×550

28×22

711×559

610

700×500

28×20

711×508

610

750×700

30×28

762×711

610

750×650

30×26

762×660

610

750×600

30×24

762×610

610

750×550

30×22

762×559

610

800×750

32×30

813×762

610

Buttweld Fitting >> Tee

Nominal Diameter Outside Diameter Center to End
D1 D2
DN NPS Series A Series A "C" "M"
(Inches) (mm) (mm) (mm) (mm)

15×15×15

1/2 × 1/2 ×1/2

21.3

21.3

25

25

15×15×10

1/2×1/2×3/8

21.3

17.3

25

25

15×15×8

1/2×1/2×1/4

21.3

13.7

25

25

20×20×20

3/4×3/4×3/4

26.9

26.9

29

29

20×20×15

3/4×3/4×1/2

26.9

21.3

29

29

20×20×10

3/4×3/4×3/8

26.9

17.3

29

29

25×25×25

1×1×1

33.7

33.7

38

38

25×25×20

1×1×3/4

33.7

26.9

38

38

25×25×15

1×1×1/2

33.7

21.3

38

38

32×32×32

1.1/4×1.1/4×1.1/4

42.4

42.4

48

48

32×32×25

1.1/4×1.1/4×1

42.4

33.7

48

48

32×32×20

1.1/4×1.1/4×3/4

42.4

26.9

48

48

32×32×15

1.1/4×1.1/4×1/2

42.4

21.3

48

48

40×40×40

1.1/2×1.1/2×1.1/2

48.3

48.3

57

57

40×40×32

1.1/2×1.1/2×1.1/4

48.3

42.4

57

57

40×40×25

1.1/2×1.1/2×1

48.3

33.7

57

57

40×40×20

1.1/2×1.1/2×3/4

48.3

26.9

57

57

40×40×15

1.1/2×1.1/2×1/2

48.3

21.3

57

57

50×50×50

2×2×2

60.3

60.3

64

64

50×50×40

2×2×1.1/2

60.3

48.3

64

60

50×50×32

2×2×1.1/4

60.3

42.4

64

57

50×50×25

2×2×1

60.3

33.7

64

51

50×50×20

2×2×3/4

60.3

26.9

64

44

65×65×65

2.1/2×2/1/2×2.1/2

73

73

76

76

65×65×50

2.1/2×2/1/2×2

73

60.3

76

70

65×65×40

2.1/2×2/1/2×1.1/2

73

48.3

76

67

65×65×32

2.1/2×2/1/2×1.1/4

73

42.4

76

64

65×65×25

2.1/2×2/1/2×1

73

33.7

76

57

80×80×80

3×3×3

88.9

88.9

86

86

80×80×65

3×3×2.1/2

88.9

73

86

83

80×80×50

3×3×2

88.9

60.3

86

76

80×80×40

3×3×1.1/2

88.9

48.3

86

73

80×80×32

3×3×1.1/4

88.9

42.4

86

70

90×90×90

3.1/2×3.1/2×3.1/2

101.6

101.6

95

95

90×90×80

3.1/2×3.1/2×3

101.6

88.9

95

92

90×90×65

3.1/2×3.1/2×2.1/2

101.6

73

95

89

90×90×50

3.1/2×3.1/2×2

101.6

60.3

95

83

90×90×40

3.1/2×3.1/2×1.1/2

101.6

48.3

95

79

100×100×100

4×4×4

114.3

114.3

105

105

100×100×90

4×4×3.1/2

114.3

101.6

105

102

100×100×80

4×4×3

114.3

88.9

105

98

100×100×65

4×4×2.1/2

114.3

73

105

95

100×100×50

4×4×2

114.3

60.3

105

89

100×100×40

4×4×1.1/2

114.3

48.3

105

86

125×125×125

5×5×5

141.3

141.3

124

124

125×125×100

5×5×4

141.3

114.3

124

117

125×125×90

5×5×3.1/2

141.3

101.6

124

114

125×125×80

5×5×3

141.3

88.9

124

111

125×125×65

5×5×2.1.2

141.3

73

124

108

125×125×50

5×5×2

141.3

60.3

124

105

150×150×150

6×6×6

168.3

168.3

143

143

150×150×125

6×6×5

168.3

141.3

143

137

150×150×100

6×6×4

168.3

114.3

143

130

150×150×90

6×6×3.1/2

168.3

101.6

143

127

150×150×80

6×6×3

168.3

88.9

143

124

150×150×65

6×6×2.1/2

168.3

73

143

121

200×200×200

8×8×8

219.1

219.1

178

178

200×200×150

8×8×6

219.1

168.3

178

168

200×200×125

8×8×5

219.1

141.4

178

162

200×200×100

8×8×4

219.1

114.3

178

156

200×200×90

8×8×3.1/2

219.1

101.6

178

152

250×250×250

10×10×10

273

273

216

216

250×250×200

10×10×8

273

219.1

216

203

250×250×150

10×10×6

273

168.3

216

194

250×250×125

10×10×5

273

141.3

216

191

250×250×100

10×10×4

273

114.3

216

184

300×300×300

12×12×12

323.9

323.9

254

254

300×300×250

12×12×10

323.9

273

254

241

300×300×200

12×12×8

323.9

219.1

254

229

300×300×150

12×12×6

323.9

168.3

254

219

300×300×125

12×12×5

323.9

141.3

254

216

350×350×350

14×14×14

355.6

355.6

279

279

350×350×300

14×14×12

355.6

323.9

279

270

350×350×250

14×14×10

355.6

273

279

257

350×350×200

14×14×8

355.6

219.1

279

248

350×350×150

14×14×6

355.6

168.3

279

238

400×400×400

16×16×16

406.4

406.4

305

305

400×400×350

16×16×14

406.4

355.6

305

305

400×400×300

16×16×12

406.4

323.9

305

295

400×400×250

16×16×10

406.4

273

305

283

400×400×200

16×16×8

406.4

219.1

305

273

400×400×150

16×16×6

406.4

168.3

305

264

Buttweld Fitting >> Caps

Buttweld Fitting >> Caps

Pipe Cap Nominal Diameter Pipe Cap Outside Diameter at Bevel Pipe Cap Back to End
DN NPS Series A E T E1
(inches) (mm)

15

1/2

21.3

25

4.57

25

20

3/4

26.9

25

3.81

25

25

1

33.7

38

4.57

38

32

1.1/4

42.4

38

4.83

38

40

1.1/2

48.3

38

5.08

38

50

2

60.3

38

5.59

44

65

2.1/2

76.1(73)

38

7.11

51

80

3

88.9

51

7.62

64

90

3.1/2

101.6

64

8.13

76

100

4

114.3

64

8.64

76

125

5

139.7

76

9.65

89

150

6

168.3

89

10.92

102

200

8

219.1

102

12.7

127

250

10

273

127

12.7

152

300

12

323.9

152

12.7

178

350

14

355.6

165

12.7

191

400

16

406.4

178

12.7

203

450

18

457.2

203

12.7

229

500

20

508

229

12.7

254

550

22

559

254

12.7

254

600

24

610

267

12.7

305

650

26

660

267

-

-

700

28

711

  267　

-

-

750

30

762

267　

-

-

800

32

813

267

-

-


Buttweld Fitting >> Stub Ends

Common Long Pattern Short Pattern Diameter of Lap Radius of Fillet OD of Barrel

Nominal Pipe Size

(Inches)

 OD at Bevel A A B R OD
Max Min
in mm in mm in mm in mm in mm in mm in mm

1/2

0.84

21

3

76

2

51

1.38

35

0.12

3

0.9

23

0.81

21

3/4

1.05

27

3

76

2

51

1.69

43

0.12

3

1.11

28

1.02

26

1

1.32

33

4

102

2

51

2

51

0.12

3

1.38

35

1.28

33

1-1/4

1.66

42

4

102

2

51

2.5

64

0.19

5

1.72

44

1.63

41

1-1/2

1.9

48

4

102

2

51

2.88

73

0.25

6

1.97

50

1.87

47

2

2.38

60

6

152

2.5

64

3.62

92

0.31

8

2.46

62

2.34

60

2-1/2

2.88

73

6

152

2.5

64

4.12

105

0.31

8

2.97

75

2.84

72

3

3.5

89

6

152

2.5

64

5

127

0.38

10

3.6

91

3.47

88

3-1/2

4

102

6

152

3

76

5.5

140

0.38

10

4.1

104

3.97

101

4

4.5

114

6

152

3

76

6.19

157

0.44

11

4.59

117

4.47

114

5

5.56

141

8

203

3

76

7.31

186

0.44

11

5.68

144

5.53

141

6

6.62

168

8

203

3.5

89

8.5

216

0.5

13

6.74

171

6.59

168

8

8.62

219

8

203

4

102

10.62

270

0.5

13

8.74

222

8.59

218

10

10.75

273

10

254

5

127

12.75

324

0.5

13

10.91

277

10.72

272

12

12.75

324

10

254

6

152

15

381

0.5

13

12.91

328

12.72

323

14

14

356

12

305

6

152

16.25

413

0.5

13

14.17

360

13.97

355

16

16

406

12

305

6

152

18.5

470

0.5

13

16.18

411

15.97

406

18

18

457

12

305

6

152

21

533

0.5

13

18.19

462

17.97

456

20

20

508

12

305

6

152

23

584

0.5

13

20.24

514

19.97

507

22

22

559

12

305

6

152

25.25

641

0.5

13

22.24

565

21.97

558

24

24

610

12

305

6

152

27.25

692

0.5

13

24.24

616

23.97

609

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