1

About Us

About Us

65

247

288

333

415

466

547

628

710

792

874

954

60

235

273

315

390

437

513

587

663

738

814

888

55

154

167

188

223

257

296

365

408

477

545

614

684

753

821

50

126

134

146

158

177

209

240

275

338

377

439

502

565

628

691

752

45

105

119

127

137

147

165

193

221

253

310

345

401

457

514

570

627

683

40

85.8

91.7

98.4

111

117

127

136

152

117

202

230

280

331

361

411

462

512

562

612

36

63.9

69.5

80.8

86.1

92.1

103

109

117

126

140

163

185

210

256

284

329

374

419

464

510

554

32

54.9

60.0

64.9

75.0

79.7

85.0

95.0

100

108

115

128

148

168

190

230

255

295

335

376

416

456

496

30

53.0

57.7

62.4

71.8

76.2

81.2

90.6

95.4

102

109

121

140

159

180

217

241

278

316

354

391

429

466

28

50.8

55.2

59.6

68.4

72.5

77.1

85.9

90.5

96.9

103

114

132

149

169

204

226

261

296

331

367

402

436

25

39.4

47.2

51.2

55.1

62.9

66.6

70.7

78.5

82.6

88.3

94.2

104

120

135

153

184

204

235

266

298

329

361

392

22.2

33.0

36.5

43.5

47.0

50.4

57.4

60.7

64.3

71.3

74.9

80.0

85.2

93.9

108

122

137

165

183

210

238

266

294

322

349

20

24.7

26.1

27.7

30.8

34.0

40.2

43.4

46.5

52.8

55.7

59

65.3

68.6

73.1

77.8

85.7

98.2

111

125

150

166

191

216

241

266

291

316

17.5

18.5

19.9

22.7

24.0

25.3

28.1

30.8

36.3

39.1

41.8

47.3

49.8

52.7

58.1

61.1

65.1

69.2

76.0

87.0

98.0

110

132

146

168

190

212

234

256

277

16

16.2

17.5

18.7

21.3

22.5

23.7

26.2

28.8

33.8

36.3

38.8

43.8

46.2

48.8

53.8

56.4

60.1

63.8

70.1

80.1

90.2

101

121

134

154

174

194

214

234

254

14.2

12.9

13.9

15.0

16.1

17.3

19.5

20.6

21.7

23.9

26.2

30.6

32.8

35.1

39.5

41.6

43.9

48.4

50.7

54.0

57.3

62.9

71.8

80.6

90.6

108

120

137

155

173

191

209

226

12.5

11.0

11.9

12.8

13.7

14.7

15.7

17.7

18.7

19.6

21.6

23.6

27.5

29.4

31.4

35.3

37.1

39.2

43.1

45.2

48.0

51.0

55.9

63.7

71.5

80.3

96.0

106

121

137

153

168

184

11

9.09

10.1

10.9

11.7

12.5

13.4

14.2

16.0

16.8

17.7

19.4

21.1

24.6

26.3

28.0

31.5

33.1

34.9

38.4

40.1

42.7

45.2

49.6

56.5

63.3

71.1

84.9

93.5

107

121

135

10

7.99

8.51

9.45

10.1

10.9

11.6

12.4

13.2

14.8

15.5

16.3

17.9

19.5

22.6

24.2

25.7

28.9

30.3

32.0

35.1

36.7

39.0

41.4

45.3

51.6

57.8

64.9

77.4

85.2

97.8

110

8.8

6.34

7.29

7.75

8.57

9.16

9.81

10.5

11.2

11.9

13.3

13.9

14.6

16.0

17.4

20.1

21.5

22.9

25.7

27.0

28.4

31.2

32.6

34.6

36.7

40.1

45.6

51.2

57.3

68.4

75.3

86.3

63.9

69.5

80

60.0

64.9

75.0

79

53.0

57.7

62.4

71.8

76.2

50.8

55.2

59.6

68.4

72.5

2

51.2

55.1

62.9

66 6

3

36

43.5

47.0

50.4

57.4

24.7

26.1

27.7

30.8

34.0

40.2

43.4

6.5

18.5

19.9

22.7

24.0

25.3

28.1

30.8

.3

5

7

3

20www cv n v

Steel Construction Pipes

Standard Grade C Mn Si P S Cu Ni Cr Mo V AI

DIN 1630 St. 37.4 0.09-0.15 0.35-0.65 0.17-0.35 0.04 0.04 0.020

DIN 1630 St. 44.0 0.15-0.2 0.40-0.65 0.17-0.35 0.05 0.04 0.020

DIN 1630 St. 52.4 0.17-0.22 1.30-1.60 0.35-0.55 0.035 0.04 0.020

DIN 17 121 St. 37-2 0.17 0.05 0.05

DIN 17 121 St. 44-2 0.21 0.05 0.05

DIN 17 121 St. 37-3 0.17 0.04 0.04 0.020

DIN 17 121 St. 44-3 0.20 0.04 0.04 0.020

DIN 17 121 St. 52-3 0.22 1.60 0.55 0.04 0.04 0.020

EN 10210-1 S235JRH 0.17 1.40 0.04 0.04

EN 10210-1 S275J0H 0.20 1.50 0.035 0.035

EN 10210-1 S275J2H 0.20 1.50 0.03 0.03 0.020

EN 10210-1 S355J0H 0.22 1.60 0.55 0.035 0.035

EN 10210-1 S355J2H 0.22 1.60 0.55 0.03 0.03 0.020

EN 10210-1 S355K2H 0.22 1.60 0.55 0.03 0.03 0.3 0.3 0.3

N

0.009

0.009

0.009

0.009

CHEMICAL COMPOSITION

0.009

DIN 1630 St. 37.4 350-480 25 300

DIN 1630 St. 44.0 420-550 21 300

DIN 1630 St. 52.4 500-650 21 300

DIN 17 121 St. 37-2 340-470 26 300

DIN 17 121 St. 44-2 340-470 26 300

DIN 17 121 St. 37-3 410-540 22 300

DIN 17 121 St. 44-3 410-540 22 300

DIN 17 121 St. 52-3 490-630 22 300

EN 10210-1 S235JRH 360-510 26 20

EN 10210-1 S275J0H 410-560 23 20

EN 10210-1 S275J2H 410-560 23 300

EN 10210-1 S355J0H 470-630 22 20

EN 10210-1 S355J2H 470-630 22 300

U,N 335 345 335 L=27(0°C)

U,N 275 265 225 L=27(-20°C)

U,N 275 265 225 L=27(0°C)

U,N 335 345 335 L=27(-20°C)

U,N 355 345 335 KV=27 (-20°C)

U,N 275 265 255 KV=27

U,N 275 265 255 KV=27 (-20°C)

U,N 235 225 215 L=27

U,N 235 225 215 KV=27

U,N 235 225 215 KV=27 (-20°C)

U,N 275 265 225 T=27 (0°C), L=44(0°C)

U,N 335 345 335 T=27 (0°C), L=45(0°C)

U,N 235 225 215 T=27 (0°C), L=43(0°C)

Standard Grade Heat Treatment

MECHANICAL PROPERTIES Min. (Mpa)

Rm (MPa)A5 Min.

(%)

KV(J)

Temperatureof

(°C)t 0-16 mm 1 16-40 mm t 40-65 mm

345 335

420225275 265

350-480215235 225

0.3 0.3 0.3

Rm (MPa)A5 M

m1 16-40 mm

NICAL PROMin. (Mpa)

0.035

0.03 0

0.55 0.035 0.03

60 0.55 0.03 0.0

1.60 0.55 0.03 0

t 0-16 m