BAIJIAN - Third party testing organization
This standard specifies the classification、 size、 appearance、 weight、 allowable deviation、 technical requirements、 test methods、 inspection rules、 packaging、 marking、 and quality certificate of medium strength steel wires for prestressed concrete. This standard is applicable to steel wires with a strength range of 650 MPa -1370 MPa that undergo stabilization heat treatment after cold processing for prestressed concrete components. The following normative references are essential for the application of this document. For dated references、 only the dated version applies to this document. For undated references、 the latest version (including all modification orders) applies to this document. GB/T 2103 Steel Wire Acceptance、 Packaging General provisions for markings and quality certificates GB/T 4354 High quality carbon steel hot-rolled wire rods GB/T 21839 Test methods for steel bars for prestressed concrete GB/T 24238 Hot rolled wire rods for prestressed steel wires and steel strands GB/T 24242.2 Non alloy steel wire rods for wire production GB/T 24242 Part 2: General purpose wire rods GB/T 242.4 Non alloy steel wire rods for wire production GB/T 242.4 Part 4: Special purpose wire rods YB/T 081 Principles for rounding off and determination of detection values in metallurgical technical standards
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