Superhigh Pressure More Than 3 Meter Diameter Greater Than 10 MΩ 2.5 KV Insulated

Delivery term:The date of payment from buyers deliver within days
  • Price:

    Negotiable

  • minimum:

  • Total supply:

  • Delivery term:

    The date of payment from buyers deliver within days

  • seat:

    Liaoning

  • Validity to:

    Long-term effective

  • Last update:

    2017-10-25 12:57

  • Browse the number:

    240

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Shenyang Yongye Industry Co.,Ltd
Contactaixin:

Contactaixin:

syyysy(Mr.)  

Email:

telephone:

phone:

Area:

Liaoning

Address:

Room 1204, World Financial Center, No. 41, Beizhan Yi Road, Shenhe District, Shenyang City, Liaoning Province, China

Website:

http://www.yongyeindustry.com/ http://syyysy.gloshealthandbeauty.com/

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Shenyang Yongye YY - JT Series Insulating Joint Selection
The insulating joint is the essential pressure component necessary for steel pipeline cathodic protection system, broadly applicable to steel pipeline cathodic protection systems. Our company’s insulating joints adopts a unique design based on referencing foreign latest product structure according to ASME BPV  Code Sect Ⅷ Div.ⅠAppendix2 design specifications and ASME B31.3 design code, to overcome problems of inadequate rigidity, prone to leak, unable to be buried under ground short service life, ete. The insulating joints have realized buried parts maintenance-free function and allow a service life matching the pipelines.
Design specifications:ASME BPV  Code Sect Ⅷ Div.ⅠAppendix2  GB150
Design code:ASME B31.3  GB50253
Technical characteristic:
Dimensions :DN15~DN1200
Pressure grade:PN1.6~PN40.0MPa
Service life:same as the service life of pipeline 
Applicable medium:oil, gas, water, chemical feed ,mineral slurry
End slope meatus:in accordance with  ASME B31.4 and the regulations for welding technics
Installation place:buried-levelly under the earth
Quality inspection:100% insulating resistance value test:≥10MΩ@DC 1000V
100% insulating intensity test:no breakdown or arc for one minute @5000V 50Hz  
100% hydraulic pressure testing pressure: 1.5 times of designed pressure
100% air-tight testing pressure:equivalent to designed pressure 
100% non-destructive testing:to 100% the crack detection of the weld line of all the butt-connectors by ray accordance with ASME BPV Code Ⅷ UW-51,App.12,App.6 or JB4730, other welding line are 100%
detected by ray or magnetic power.
100% surface of end slope examination 
100% hardness test on weld joints
5% submerging electrolysis fluid insulating intensity testing:≥6MΩ
5% hydrostatic pressure plus bending test :longitudinal stress 72%×the regulated test bending intensity.
5% hydrostatic pressure fatigue test:1MPa~85% hydrostatic pressure test for 40 cycles
100% the thickness of coated dry velum test 
100% visual and dimensional check
5% coat adhering test  
Material s characteristics:
Assembled parts:according to ASTM A694 F52/JB4726
Stub end:same with pipeline material
Insulating material:ASTM D709 G11 or GB1301.1-1998 high strength epoxy glass
Filling material:high strength epoxy resin 
Sealing material:rubber fluoride 26
Sealing stickiness:silicon rubber
Internal & external surface anti-corrosion insulating material:two-component solvent-free epoxy coating, anti-corrosion thermal contraction bushing. 
SymbolSupplier Name                   
Nominal pressure and nominal diameter
Test pressure
Manufactured number
Production date
Pipe material & thickness
Standard inspection
100% 1.5 of designed pressure for
hydraulic pressure testing
100% AC 5000V external voltage testing
100% DC 1000V insulating resistance
measuring 
100% appearance inspection
100% dimension checking
5%  hydraulic & bending moment testing
5%  hydraulic cycling (fatigue) testing
5%  submerging electrolysis fluid insulating intensity testing
5%  coating adhering testing
Model Designation
 
Field Installation Requirement:
1.There should not be any weld dead hole present within 50M range of the intended installation of the insulating joints.
2.After completion of insulating fittings connected with pipeline, hoisting the pipeline within 5M proximity is disallowed to prevent excessive bending moment.
3.The insulating joints shall not be used as the offset component for thermal strain
4.When the insulating joints are pressure-tested together with pipeline, the maximum pressure rise rate shall not exceed 0.5MPa per minute.
5.Insulation joint installed on the straight pipe on the ground or underground, shall be 30 meters away from the elbow and set the anchor pier.
6.Avoided to be installed on the perennial stagnant water where buried installation.
7.
 

型号

PN

≤2.5MPa

≤4.0MPa

≤6.4MPa

≤10.0MPa


DN

Da

Db

H

Da

Db

H

Da

Db

H

Da

Db

H

L

                           YY  - JT  - DN  /  

PN  -  L

15

21.3

60

44

21.3

65

46

21.3

67

46

21.3

70

58

400

20

26.9

64

50

26.9

68

53

26.9

70

55

26.9

75

62

400

25

33.7

72

54

33.7

76

58

33.7

80

63

33.7

86

70

400

32

42.4

80

60

42.4

84

62

42.4

90

65

42.4

97

72

400

40

48.3

92

75

48.3

97

80

48.3

113

88

48.3

120

96

400

50

60.3

105

80

60.3

112

89

60.3

120

97

60.3

128

106

500

65

76.1

126

90

76.1

134

95

76.1

141

102

76.1

152

117

500

80

88.9

146

119

88.9

154

128

88.9

165

134

88.9

170

140

700

100

114

184

125

114

184

135

114

184

142

114

193

145

700

125

133

200

130

133

200

136

133

220

148

133

225

153

800

150

168

250

135

168

250

140

168

265

155

168

265

170

800

200

219

310

140

219

310

155

219

330

170

219

334

185

900

250

273

366

155

273

366

165

273

376

180

273

385

190

900

300

325

415

170

325

415

180

325

430

195

325

438

205

900

350

377

460

190

377

460

205

377

475

220

377

488

235

900

400

406

560

205

406

560

215

406

570

225

406

585

240

900

450

457

578

225

457

578

238

457

593

255

457

620

265

1000

500

508

680

230

508

680

240

508

695

255

508

706

265

1000

550

559

708

240

559

708

255

559

726

265

559

740

290

1100

600

610

780

250

610

780

265

610

796

300

610

812

315

1200

650

660

790

265

660

790

285

660

825

325

660

844

350

1400

700

711

860

280

711

860

305

711

885

345

711

898

375

1600

800

813

920

300

813

920

335

813

945

365

813

980

390

1600

900

914

1070

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