GB/T 21833-2008 in English

《GB/T 21833-2008奥氏体 铁素体型双相不锈钢无缝钢管》由TC183（全国钢标准化技术委员会）归口，TC183SC1（全国钢标准化技术委员会钢管分会）执行，主管部门为中国钢铁工业协会。
本标准规定了奥氏体- 铁素体型双相不锈钢无缝钢管的尺寸、外形及允许偏差、技术要求、试验方法、检验规则、包装、标志及质量证明书等。本标准适用于耐腐蚀的奥氏体-铁素体型双相不锈钢无缝钢管

1 Scope

This standard specifies the dimension, shape, weight, technical requirements, test methods, inspection rules, package, marking and quality certificate of austenitic-ferritic (duplex) grade stainless steel seamless tubes and pipes.
This standard is applicable to corrosion-resistant austenitic-ferritic (duplex) grade duplex stainless steel seamless tubes and pipes.

2 Normative References

The following documents contain requirements which, through reference in this text, constitute requirements of this standard. For dated reference, subsequent amendments (excluding amending errors in the text) to, or revisions of, any of these publications do not be applied. However, the parties whose enter into agreement according to these specifications are encouraged to research whether the latest editions of these references are applied or not.

1 Scope 1
2 Normative References 1
3 Order Content 3
4 Dimension, Shape and Weight 3
5 Technical Requirements 5
6 Test Methods 010
7 Inspection Rules 011
8 Package, Marking and Quality Certificate 011
Appendix A (Informative) Mechanical Properties under High Temperature of Partial Designations 112
Appendix B (Informative) Duplex Stainless Steel Designation Comparison in Different Standards 213