This part of NB/T 47002 specifies the type, size, grade, technical requirements, test methods, and inspection of composite panels made with stainless steel as cladding material, carbon steel, low alloy steel or stainless steel as base material, and manufactured by explosion welding method. Rules, packaging, logos and quality certificates, etc. This section applies to explosion welded stainless steel-steel composite plates for pressure vessels with a total thickness equal to or greater than 8 mm.