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Insulating Joint |
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Insulating Joint |
Insulating Joint |
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. |
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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 |
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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 |
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