BAIJIAN - Third party testing organization
This standard specifies the quality level of defects in steel arc welded joints. These levels are related to the manufacturing quality of the product and not to its applicability (see 3.1). This standard is applicable to the following welding methods and process categories specified in GB/T 5185: 11 Metal arc welding without gas protection; 12 submerged arc welding; 13 Gas shielded arc welding; 14 Non consumable gas shielded arc welding; 15 plasma arc welding; - Manual、 mechanized、 and automated welding methods; - All welding positions; -- Butt welds、 fillet welds、 and branch pipe joints; -- Steel with a thickness range of 3-63 mm. This standard does not consider metallurgical factors such as grain size and hardness. 2 Normative References: The clauses in the following documents become clauses of this standard through reference in this standard. For dated reference documents、 all subsequent amendments (excluding errors) or revisions are not applicable to this standard. However、 it is encouraged for all parties who have reached agreements based on this standard to investigate whether the latest versions of these documents can be used. For undated references、 the latest version applies to this standard. GB/T 324 Weld Symbolic Representation (eqv 1SO 2553) GB/T 3375 Welding Terminology GB/T 5185 Metal Welding and Brazing Methods - Representation Code on Drawings (eqv 1SO 4063 GB/T 6417 Classification and Explanation of Weld Defects in Metal Fusion Welding (eqv ISO 6520) 3 Terminology and Definitions GB/T 3375 and the following terms and definitions are applicable to this standard. 3.1 Fitness for purpose The ability of a product、 process、 or service to serve a predetermined target under specified conditions. 3.2 Weld thickness 3.2.1 Fillet weld thickness (nominal throat thickness) is the height on the bottom edge of the maximum isosceles right triangle in the weld cross-section. 3.2.2 Butt weld thickness is the minimum distance from the melted bottom to the surface of the workpiece、 which is not greater than the thickness of the thinner workpiece
Function of testing report:
1. Project bidding: Issue authoritative third-party CMA/CNAS qualification report
2. Online e-commerce platform entry: Quality inspection report recognized by major e-commerce platforms 3. Used as a sales report: issuing legally effective testing reports to make consumers more confident 4. Papers and research: Provide professional personalized testing needs 5. Judicial services: providing scientific、 fair、 and accurate testing data 6. Industrial problem diagnosis: Verify the troubleshooting and correction of industrial production problemsinspection and testing process:
1. Telephone communication and confirmation of requirements
2. Recommend solutions and confirm quotations 3. Mail samples and arrange testing 4. Progress tracking and result feedback 5. Provide reports and after-sales service 6. If urgent or priority processing is requiredTesting and testing characteristics:
1. The testing industry is fully covered、 meeting different testing needs
2. Fully cover the laboratory and allocate localized testing nearby3. Engineers provide one-on-one services to make testing more accurate
4. Free initial testing、 with no testing fees charged
5. Self service order delivery for free on-site sampling
6. Short cycle、 low cost、 and attentive service 7. Possess authoritative qualifications such as CMA、 CNAS、 CAL、 etc 8. The testing report is authoritative and effective、 and is generally used in China