Technical specifications for conduits for power cables - Part 1: General principles - Scope: This part specifies the product classification, model specifications and markings, technical requirements, test specimens, test environmental conditions and methods, inspection rules, sampling, judgment rules, marking, packaging, stacking, and factory certificate of conformity of conduits for power cables. This section is applicable to products such as glass fiber reinforced plastic cable conduits, chlorinated polyvinyl chloride and hard polyvinyl chloride plastic cable conduits, chlorinated polyvinyl chloride and hard polyvinyl chloride plastic double wall corrugated cable conduits, fiber cement cable conduits, and socket type concrete prefabricated cable conduits. Other conduits can refer to the implementation. 2 Normative References: The clauses in the following documents become the clauses of this section through reference in this section. For dated reference documents, all subsequent amendments (excluding corrected content) or revisions do not apply to this section. However, parties to agreements based on this section are encouraged to study whether the latest versions of these documents can be used. For undated references, the latest version applies to this section. GB/T 1634,2 Plastics - Determination of deformation temperature under load - Part 2: Plastics Hard rubber and long fiber reinforced composite materials (idt ISO75-2) GB/T 2828.1 Sampling procedures for inspection by attributes - Part 1: Batch by batch inspection sampling plan indexed by acceptance quality limit (AQL) (idt ISO 2859-1) GB/T 2829 Sampling procedures and tables for periodic inspection by attributes (applicable to the inspection of process stability) GBT 2918 Standard environment for condition adjustment and testing of plastic specimens (idt ISO 291) GB/T 5352 Test Method for External Load Performance of Fiber Reinforced Thermosetting Plastic Pipe Parallel Plate (neq ASTM D 2412) GB/T 8802 Thermoplastic Pipe and Fitting Determination of Vicat Softening Temperature (eqv ISo 2507) GB/T 9647 Thermoplastic Pipe Determination of Ring Stiffness (idt So 9969) HG/T 3091 Rubber Seals - Specification for Interface Sealing Ring Materials for Water Supply, Drainage, and Sewage Pipelines (idt ISO 4633)
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