Insulating joint

Insulating joint Dimension specification: 1" 60"Pressure grade: class150 2500 Service life: same as the service life of pipeline Ambient temperature: -30°c 90°c Applicable medium: oil, gas, water, chemical feed, mineral slurryQuality Requirement Insulating resistance value: ≥10MΩ@DC1000V Maximum voltage: ≥3.5kv Insulating intensity: no breakdown or one minute @2500v 50HZ Hydraulic pressure testing pressure: 1.5times 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 API 5L standardMaterial Requirement This product adopt’s material satisfy below request: Insulating material: high strength epoxy resin and fiberglass stratification composite material Bends intensity: lengthways ≥390 MPa Side direction ≥290 MPa Pulls stretch intensity: lengthways ≥340 MPa Side direction ≥240 MPa Compressive intensity: ≥390 MPa water –absorbing ≤30mg Soaks in water behind resistance: ≥5*108Ω Breakdown resistance ≥35kv Assemblies steel: 16Mn JB4726; ASTM A694 F52, F60 Short pipe: 20# 16Mn GB8163-99 X70 X65 X60 X56 X52 X46 API SPEC. 5L 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 busing Type and DimensionFor example: DN400B-64 represents the insulating joint of DN400 and 6.4Mpa press class.Insulating joint Dimension specification: 1" 60"Pressure grade: class150 2500 Service life: same as the service life of pipeline Ambient temperature: -30°c 90°c Applicable medium: oil, gas, water, chemical feed, mineral slurry