GB/T 25778-2010 Procurement guidelines for welding consumables
Procurement guidelines for welding consumables
1 Scope
This standard specifies the terms and definitions, identification, lot classification, testing schedule, certification and other relevant content for the procurement of welding consumables.
This standard is applicable to both the supplier and the purchaser of welding consumables for selecting and preparing specific detailed rules for welding consumables procurement according to procurement requirements.
2 Normative references
The following documents contain provisions which, through reference in this text, constitute provisions of this standard. For dated reference, subsequent amendments to (excluding any corrigendum), or revisions of, any of these publications do not apply. However, parties to agreements based on this standard are encouraged to investigate the possibility of applying the latest editions of the standards indicated below. For undated references, the latest edition of the document referred to applies.
GB/T 19001 Quality management systems - Requirements (GB/T 19001-2008, ISO 9001:2008, IDT)
3 Terms and definitions
For the purposes of this standard, the following terms and definitions apply.
3.1
dry batch
quantity of dry ingredients mixed at one time in one mixing vessel
Note: Liquid binder, when added to a dry batch, produces a wet mix. A dry batch can be divided into smaller quantities, in which case addition of the liquid binder produces as many wet mixes as there are smaller quantities.
3.2
dry blend
two or more dry batches from which quantities of each are combined proportionately, then mixed in a mixing vessel to produce a larger quantity in which the ingredients are as uniformly dispersed as they would have been had the entire quantity been mixed together at one time in one large mixer
Note: A dry blend, as in the case of a dry batch, can be used singly or divided into smaller quantities which, when the liquid binder is added, produce one or more wet mixes.
3.3
wet mix
combination of liquid binder and a dry batch or dry blend, or a portion thereof, mixed at one time in one mixing vessel
3.4
heat
definition of the heat for wire rods, steel strips or tubing used in consumable inserts, solid welding wires and filler wires, welding strips, core wire, flux-cored welding wires, and flux-cored filler wires depends on the specific melting and refining methods, as detailed below:
Contents
Foreword I
1 Scope
2 Normative references
3 Terms and definitions
4 General
5 Identification
6 Lot classification
7 Level of testing schedule
8 Certification
