... 1.product name:High-pressure chemical fertilizer equipments seamless steel pipe 2.Material:15CrMo 3.Country of origin: ... 16Mn,16MnR,A333Gr6Stainless:304,316,321,API 5L:Gr.B,X42,X52,X60,X65,X70 and ... so onAPI 5CT:J555StandardAPI,GB,ASTM,ASME,ANSI,DIN,GOST,JIS and so ... check12Agreementon Preshipment InspectionA:Size Check B:UT Test C: Magnaflux inspection D: Metallographic analysis E: light ...