1. Scope
The part of GB/T 985 specifies forms and sizes of steel welding groove. And this part is applicable to gas welding, manual metal arc welding, gas-shield arc welding and beam welding.
2. Normative References
The following documents contain contents which, through reference in this text, composite provisions of this part of GB/T 985. For dated reference, subsequent amendments (excepting corrigenda) to, or revisions of, any of these publications do not apply. Parties to agreements based on this standard are encouraged to investigate the possibility of applying the most recent editions of the standards indicated below. For undated references, the latest edition of the normative document referred to applies.
GB/T 324 Welds-symbolic Representation on Drawings (GB/T 324-1988, eqv ISO 2553: 1984).
GB/T 5185 Welding, Brazing, Braze Welding and Soldering of Metals - List of processes, for Symbolic Representation on Drawings (GB/T 5185-2005, ISO 4068: 1998, IDT)
GB/T 16672 Welds--Working Positions--Definitions of Angles of Slope and Rotation (GB/T 16672-1996, idt ISO 6947: 1993)
3. General Provision
This part specifies form and size butt joint weld groove on the principle of full fusion penetration. For butt joint without full fusion penetration, welding grooves of other forms may be allowed. The representation of welding symbols is specified in GB/T 324. The welding position arrangement is detailed in GB/T 16672.
4. Welding Method
Weld grooves specified in Table 1 ~ Table 4 are applicable to corresponding welding method. In case of need, combination of two or more applicable welding methods may be adopted.
Welding method code is detailed in GB/T 5185.
