This document is developed in accordance with the rules given in GB/T 1.1-2020 Directives for standardization - Part 1: Rules for the structure and drafting of standardizing documents.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. The issuing body of this document shall not be held responsible for identifying any or all such patent rights.
This standard was proposed by China Nonferrous Metals Industry Association.
This document is under the jurisdiction of National Technical Committee on Nonferrous Metals of Standardization Administration of China (SAC/TC 243).
Titanium and titanium alloy square and rectangular tubes
1 Scope
This document specifies the classification, technical requirements, test methods, inspection rules, marking, packaging, transportation, storage, accompanying documents, and purchase order content of titanium and titanium alloy square and rectangular tubes.
This document is applicable to titanium and titanium alloy square and rectangular tubes.
2 Normative references
The following documents contain requirements which, through reference in this text, constitute provisions of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
GB/T 228.1 Metallic materials - Tensile testing - Part 1: Method of test at room temperature
GB/T 3620.1 Designation and composition of titanium and titanium alloys
GB/T 3620.2 Titanium and titanium alloys - Permissible variations of chemical composition for wrought product analysis
GB/T 3621 Titanium and titanium alloy plate and sheet
GB/T 4698 (all parts) Methods for chemical analysis of titanium sponge, titanium and titanium alloys
GB/T 6611 Terminology and metallographs for titanium and titanium alloys
GB/T 8180 Wrought titanium and titanium alloy products - Packing, marking, transporting and storing
GB/T 38982 Method of measuring shape and dimension for wrought titanium and titanium alloy products
NB/T 47013.5-2015 Nondestructive testing of pressure equipments - Part 5: Penetrant testing
YS/T 1262 Method for chemical analysis of titanium sponge, titanium and titanium alloys - Determination of multielement content - Inductively coupled plasma atomic emission spectrometry
3 Terms and definitions
For the purposes of this document, the terms and definitions given in GB/T 6611 and GB/T 38982 apply.
4 Classification
4.1 Designation and state
The designation and state of the product shall meet those specified in Table 1.
Table 1 Designation and state
Designation State
TA1G, TA2G, TA3G, TA4G, TC4, TC4ELI Annealed state (M)
4.2 Section shape
The section shape of seamless tubes is shown in Figure 1a), and that of welded tubes is shown in Figure 1b).
5 Technical requirements
6 Test methods
7 Inspection rules
8 Marking, packaging, transportation, storage and accompanying documents
9 Order information
Foreword i
1 Scope
2 Normative references
3 Terms and definitions
4 Classification
5 Technical requirements
6 Test methods
7 Inspection rules
8 Marking, packaging, transportation, storage and accompanying documents
9 Order information
