1. NDT nondestructive testing
2. Welder examination：EN 287-1; ASME BPVC-IX;GB 50236
3. Welding procedure qualification: ISO 15614-1；JIS B 8285；AWS D1.1；ASME BPVC-IX-2017
4. Material testing: Chemical Composition Analysis ：GB/T 4336-2016 Tensile test ：GB/T228.1 Bend test ：GB/T 232 mpact test：GB/T 229 Hardness Test ：GB/T4340.1
5. Fastener test: GB/T 3098.1;ISO 898-1;ASTM F606-F606M