GB/T 22817-2008Vulcanized paper core (English PDF)

1 Scope

This standard specifies the steel pipe product classification, technical requirements, test methods, inspection rules and signs, packaging, transportation, storage.

This standard applies to high-voltage, low-voltage fuses, arresters and other line casing with steel tube.

2 Normative references

The following documents contain provisions which, through reference in this standard and become the standard terms. All dated references, which are subsequently owned

Amendments (not including errata content) or revisions do not apply to this standard, however, encourage the parties to reach an agreement based on this standard research

Whether you can use the latest versions of these files. For undated references, the latest version applies to this standard.

GB/T 450 paper and cardboard samples taken and the vertical and horizontal sample, the determination of the positive and negative (GB/T 450-2008, ISO 186.

2002, MOD)

GB/T 461.3 Determination of water absorption of paper and board (immersion method) (GB/T 461.3-2005, ISO 5637. 1989, MOD)

GB/T 462 paper, paperboard and pulp analysis of moisture samples (GB/T 462-2008; ISO 287. 1985, MOD;

ISO 638. 1978, MOD)

GB/T 742 papermaking raw materials, pulp, paper and board Determination of ash (GB/T 742-2008, ISO 2144..1997, MOD)

GB/T 1408.1 insulating materials, electrical strength test methods - Part 1. Test under power frequency (GB/T 1408.1-2006,

IEC 60243-1..1998, IDT)

GB/T 2828.1 Sampling procedures for inspection - Part 1. Batch inspection sampling plan by acceptance quality limit (AQL) (GB/T 2828.1-2003, ISO 2859-1..1999, IDT)

GB/T 10342 paper packaging and marking

GB/T 10739 Standard atmospheric conditions for the handling and testing of paper, board and pulp specimens (GB/T 10739-2002, eqv ISO 187.

1990)

3 product categories

Paper tube according to the purpose is divided into A-type steel tube and B-type steel tube two. A type of steel tube for high-voltage fuses, surge arresters and different models

Of FRP composite pipe materials; B-type steel tube for low-voltage fuses and other materials used in casing.

4 technical requirements