Insulating Joints

Monolithic Insulating Joint Monolithic Insulating Joint

Genaeral Description of Insulating Joint
      Insulating Joint is an indispensable fittings in natural gas and oil transfering system. it’s mainly applied in oil & gas transferring and adjusting station. It’s major function is to insulate between transferring pipes and gas adjusting station to avoid from corrosion and prolong life span. Besides, it can also be buried underground.
Structure of Insulating Joint
      Insulating Joint consist of following part: upper pipe, lower pipe, glove pipe, insulating part, sealing part  and insulating coating. Between upper and lower pipe there are insulating part and sealing part to form a double sealing structure of insulating property. The glove pipe are beveled for welding or directly welding with the upper pipe to form a “sealing space ” with  insulating apart, upper pipe and lower pipes inside.  Thiswill largely enhance the insulating effect and also the anti-pressure capability.
Sealing style of Insulating Joint
Insulating Joint has good insulating effect and long life-span. the sealing system is very important for insulating effect. At present, the insulating joint adopt “U” type sealing ring to achieve double insulating system.
Performance Parameter of Insulating Joint
1.Insulating Property: 2500V test insulating resistant≥200MΩ 2.Hydrostatic test: 1.5 times pressure   3.Air-tight test: equal pressure   4. Non-destructive test: 100% radiographic inspection for all joint according to JB 4730-94; Other weld seam by 100% magnaflux inspection   5.Beval: accordng to API 5L
Technical Features of Insulating Joint
1.Specification :DN15~DN3200    2.Pressure Class: PN1.0~PN42MPa    3.Life Span: same as line pipes    4.Suitable Medium: oil, gas,  water    5.Working Tempreture:-19℃ ~ +70℃
Welded Line pipe Material
1.API 5L  X  Series pipe   2.GB/T8163  10#, 20# steel pipe   3.GB/T3091  Q235B steel pipe   4.GB/T9711.1  L  Series pipe
Insulating Material & Features
1.Insulating material: hight density epoxy resin and glass fibre shape composite material ASTM D709 G11 2.Bending strength: lengthway≥390MPa,cross≥290MPa 3.Tensile strength: lengthway≥340MPa,coss≥240MPa   4.Compression strength:≥340MPa,hydroscopicity≤30mg 5.Electric resistance in water≥5×108Ω,resistance to sparking≥35KV 6.Combination steel:16Mn JB4726,ASTM A694 F52,F60 7.Short pipe: 20#,16Mn,GB/T8163-99     8.X70,X65,X60,X56,X52,X46,API SPEC.5L      9.Insulating material:O-ring or U-shape sealing ,fluorine rubber, nitrile butadiene rubber   10.Filling Material: cold curling resin 11.Insulating coating: imported liquid epoxy resin   12.Anti-corrosive material: Heat shrinkable anti-corrosion materials
Specification of Insulating Joint
Pressure : PN2.5MPa,ANSI 150LB
Pressure : PN4.0MPa,ANSI 200LB
Specification
OD*Thk
Lenght
Specification
OD*Thk
Lenght
DN25
Φ32*4/Φ34*4
250
DN25
Φ32*4/Φ34*4
250
DN40
Φ48*4
300
DN40
Φ48*4
300
DN50
Ф57*4/Ф60*4
350
DN50
Ф57*4/Ф60*4
350
DN65
Φ76*4
350
DN65
Φ76*5
350
DN80
Φ89*4
400
DN80
Φ89*5
400
DN100
Ф108*5/Ф114*5
400
DN100
Ф108*5/Ф114*5
400
DN125
Ф133*5/Ф141*5
500
DN125
Ф133*6/Ф141*6
500
DN150
Ф159*5/Ф168*5
500
DN150
Ф159*7/Ф168*7
500
DN200
Φ219*6
500
DN200
Φ219*7
500
DN250
Φ273*6
800
DN250
Φ273*8
800
DN300
Φ325*7
800
DN300
Φ325*10
800
DN350
Ф356*7/Ф377*7
900
DN350
Ф356*10/Ф377*10
900
DN400
Ф406*7/Ф426*8
900
DN400
Ф406*10/Ф426*10
900
DN450
Φ457*8/Φ480*8
900
DN450
Φ457*10/Φ480*10
900
DN500
Ф508*8/530*8
900
DN500
Ф508*12/530*12
900
DN600
Φ610*9/Φ630*9
1000
DN600
Φ610*14/Φ630*14
1000
DN700
Φ711×10/Φ720*10
1200
DN700
Φ711*14/Φ720*14
1200
DN800
Φ813*10/Φ820*10
1300
DN800
Φ813*16/Φ820*16
1300
Pressure : PN6.4MPa,ANSI 300LB
Pressure : PN10.0MPa,ANSI 600LB
Specification
OD*Thk
Lenght
Specification
OD*Thk
Lenght
DN25
Φ32*4/Φ34*4
250
DN25
Φ32*5/Φ34*5
250
DN40
Φ48*5
300
DN40
Φ48*5
300
DN50
Ф57*5/Ф60*5
350
DN50
Ф57*5/Ф60*5
350
DN65
Φ76*6
350
DN65
Φ76*6
350
DN80
Φ89*5
400
DN80
Φ89*7
500
DN100
Ф108*6/Ф114*6
500
DN100
Ф108*8/Ф114*8
500
DN125
Ф133*7/Ф141*7
600
DN125
Ф133*8/Ф141*8
600
DN150
Ф159*8/Ф168*8
600
DN150
Ф159*9/Ф168*9
600
DN200
Φ219*9
600
DN200
Φ219*12
600
DN250
Φ273*10
800
DN250
Φ273*14
800
DN300
Φ325*11
800
DN300
Φ325*16
800
DN350
Φ356*12
1000
DN350
Φ356*16
1000
DN400
Ф406*14/Ф426*14
1000
DN400
Ф406*16/Ф426*16
1000
DN450
Φ457*14/Φ480*14
1000
DN450
Φ457*18/Φ480*18
1000
DN500
Ф508*16/530*16
1200
DN500
Ф508*20/530*20
1200
DN600
Φ610*18/Φ630*18
12000
DN600
Φ610*22/Φ630*22
1200
DN700
Φ711*20/Φ720*20
1300
DN700
Φ711*26/Φ720*26
1300
DN800
Φ813*24/Φ820*24
1300
DN800
Φ813*28/Φ820*28
1300