Scope This standard specifies the specifications, models, requirements, test methods, inspection rules, product identification, packaging, storage and transportation of polyurethane foam synthetic sleepers for rail transit. This standard is applicable to the production and acceptance of polyurethane foam synthetic sleepers. The clauses in the following documents are referred to as provisions of this standard through normative references. For dated reference documents, all subsequent amendments (excluding corrected content) or revisions are not applicable to this standard. However, parties to agreements based on this standard are encouraged to study whether the latest versions of these documents can be used. For undated references, the latest version applies to this standard. GB/T1408.1 Test Methods for Electrical Strength of Insulating Materials Part 1: Tests at Power Frequency GB/T1410 Test Methods for Volume and Surface Resistivity of Solid Insulating Materials GB/T1451 Fiber Reinforced Plastics Simple Beam Impact Toughness Test Method GB/T1634.2 Determination of Plastic Load Deformation Temperature Part 2: Plastics Hard rubber and long fiber reinforced composite materials GB/T2408-1996 Test method for flammability of plastics Horizontal method and vertical method GB/T2577 Test method for resin content of glass fiber reinforced plastics GB/T6343 Determination of apparent (volume) density of foamed plastics and rubber GB/T8924 Test method for flammability of fiber reinforced plastics Oxygen index method GB/T 14522 Test method for artificial weathering of plastics, coatings and rubber materials used in mechanical industrial products Fluorescent ultraviolet lamp
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 problemsBaijian 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