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Insulating Joint

Insulating Joint

Product description Monolithic insulating joint is a high-tech product It is very difficult to manufacture the monolithic insulating joint, it requires accurate design, precision machining and accurate assembly, the combination of a wide array of high-quality materials, strict quality......
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Product description

Monolithic insulating joint is a high-tech product
It is very difficult to manufacture the monolithic insulating joint, it requires accurate design, precision machining and accurate assembly, the combination of a wide array of high-quality materials, strict quality inspection, so the monolithic insulating joint is multidisciplinary comprehensive high-tech product.

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monolithic insulating joints

Operation   pressure

up to   42 Mpa

Operation   temperature

design   temperature 250℃;(exported to Sudan Project)

Electric   resistance

more   than 10 MΩ at 2.5KV DC(direct current)

Dielectric   strength

no   breakdown at 50Hz, 3KV AC(alternating current)

 

The insulating Joints is a new generation developed product to resolve use problems of old insulating flange.

Can be buried directly Without any maintained.A variety of diameters and pressure, can meet the requirement of high, medium, low pressure steel pipeline for oil, water and gas.

 

Quality requiremen

Insulating   resistance value:

≥10MΩ   @DC1000V, Maximum voltage:≥3KV

Insulating intensity:

no breakdown or arc for one   minute @2500V 50Hz

Hydraulic testing 

pressure:

1.5  times of designed pressure

Air-tight  testing

 pressure:

equivalent   to designed pressure

Non-destructive testing:

All the butt-connectors are 100% ray-detected according to JB4730-94; other pressure welding seams   are 100% magnetic power detected.

Groove:

adopt AP15L standard

Insulanting   material:

high strength epoxy resin and fiberglas stratification composite material

Bends intensity:

Lengthways≥390MPa   Side direction≥290MPa

Pulls stretch

intensity:

Lengthways≥340MPa   Side direction ≥240MPa

Comprehensive   intensity:

≥390MPa   Water-absorbing≤30mg

Scaks in water behind resistance:

≥5x108Ω   Breakdown resistance≥35KV

Assemblies   steel:

16Mn   JB4726; ASTM A694 F52 F60

Sealing material:

O shape   or U shape gland ring: Rubber fluorine, Jing base butadiene rubber, According   ASTM D2000

Lining material:

Cold   solid colophony

Insulating paint:

Imports   liquid epoxy resin

Anti-corrosion   insulating material:

two-component   solvent-free epoxy coating, anti-corrosion thermal contraction bushing


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