... 8mm-30mmstandardAPI5L,API5CT,ASTM-A106,ASTM-A53,SY5037-2000,GB/T5711.1-1997MaterialX42,X52,X60,X65,X70,Q235, ... your advance payment(or as your requirement)Payment term T/T ,I/C .now we can accept USANCE 90 ... method (standard )DensityKg /m 3≥60GB/T 6343Compressive strengthMPa≥0.3GB/T 8813Thermal conductivity coefficientw/m°C≤0.033GB ... from customers. BS1387 ASTM A53 EN 39 GB/T 3091 insulation steel pipe