... to SCH160, XS, XXSThickness ToleranceInternational standards : +-12.5% ,If the customer must shrink tolerance, we can do according to ... customer's requirements.standardsANSI ,ASTM, API ,DIN ,JIS ,BS ,ISO ,GB, SH, AND, SH , ... 450C) etcSteel gradeQ195,Q195L,Q235 and so on PackingPlastic steel pipe cap ,plastic bag, steel strip bundledCertificateAPI, CCS, ISO9001:2000Delivery ...