Product Item: API 5L Grade X65 Insulation Joint
Design Standard: ASME B31.8, ASME B31.4
Steel Material: API 5L Grade X65
Size: 8 Inch
Pressure Rating: Class 600 LB
Wall Thickness: 12.7 mm
Design Pressure: Max. 90 bar
Temperature Range: -20°C to +50°C
Medium: Gas & Oil

Source: https://www.landee.cn/api-5l-x65-insulation-joints-asme-b31-8-asme-b31-4-8-inch.html