... , SGS, Lloyds 12) Payment: TT ,30%TT and 70% Irrevocable LC at sight SpecificationsChina StandardSteel GradeStandardseamless steel tubesand pipesfor structural purposeGB ... , 15CrMo, 1Cr2Mo, 1Cr5Mo, JIS G3441-1988 stainless seamless steel tube 300 series