... etc.Material/Steel gradeA, B, X42, X46, X52, X56, X60, X65, X70, L175, L175P, L210, L245, L290, L320, L360, L390, ... STK290, STK400, STK490, STK500,STK540,STPG370, STPG410 etc.CertificateEN10217, EN10219, API 5L PSL1/ PSL2, KS 4602, KS3583, GB/T9711.1/2,etc ... pieces; can be packed as customers’ special requirementsApplication- line pipe for use in pipeline transportation systems in the petroleum and ...