__Size Range: DN25(1")~DN1200(48")
__Pressure Class: ANSI 150 ~ ANSI 600(Up to ANSI1500)
__Working Temp: -10~+90 C
__Testing:
Hydrostatic test: 1.5 times MOP
Electrical resistance: ≥ 100MΩ (1000V DC) Under Dry air, 25 C
Dielectrical voltage: 3.5KV/50Hz(1 min)(Can be 5.0KV up to the request)
__Suitable Media: Gas, Oil, Water

Referance: GAIL (India) 48" INSULATING JOINT ANSI600
Titas Gas Transmission & Distribution Co Ltd Bangladesh From 2" to 8" Insulating joint ANSI150 to ANSI600
ALSTOM MOSCCOW 18" INSULATING JOINT ANSI300
So on many others