ASME SA-387 SA-387M GR.12 CL1 steel plates for pressure vessels Specification : SA387 in the standard ASME SA-387.SA-387M is a kind of Cr-Mo-alloy steel plates material used to fabric high temperature pressure vessels. SA387 have ten grades or levels. They are : grade 2, grade 12, grade 11, grade 22, grade 22L, grade 21, grade 21L, grade 5 , grade 9 , grade 91. Because of the good property , SA387 GR.11 CL1, SA387 GR.11 CL2, SA387 GR.22 CL1, SA387 GR.22 CL2, SA387 GR.12 CL1, SA387 GR.12 CL2 are widely used in the high temperature vessels industry. Standard: ASME SA-387SA-387M Equal material: SA387 GR.11 CL1, SA387 GR.11 CL2 , SA387 GR.22 CL1, SA387 GR.22 CL2, SA387 GR.12 CL2 steel.Dimension range :1.5mm -260mm x 1000mm-4000mm x 1000mm-18000mm MOQ: 1 PCProduct type : Steel plate Delivery time : Promptly ( Stock) or 10-40 days (Production) Stock : Available MTC: Available Payment Term : TT or LC At sight.