GB/T 20674.2-2020
Plastics pipes and fittings—Equipment for fusion jointing polyethylene systems—Part 2: Electrofusion

Standard No.

GB/T 20674.2-2020

Language

Chinese

Release Date

2020

Published By

国家市场监督管理总局、中国国家标准化管理委员会

Latest

GB/T 20674.2-2020

Replace

GB/T 20674.2-2006

Scope

This part of GB/T20674 specifies the terms and definitions, classifications, requirements, test methods, random documents, maintenance, inspection rules, signs , packaging, transportation and storage. This part, together with other parts of GB/T 20674, applies to fusion splicing equipment for polyethylene pipes and fittings for gas/water supply. The pipes and fittings for polyethylene gas comply with the requirements of GB/T15558 (all parts), and the pipes and fittings for drinking water and general pressure water delivery meet the requirements of GB/T13663 (all parts). This section applies to electric fusion welding machines controlled by voltage or current, and electric fusion welding machines are suitable for pipes heated by resistance wires. The electric fusion welding machine is divided into three input voltage levels: P1 level voltage (SVLV, not greater than 50V); P2 level voltage (LV, greater than 50V and not greater than 250V); P3 level voltage (HV, greater than 250V and not greater than 400V) . The normal working environment temperature range of the electric fusion welding machine is -10 ℃~+40 ℃. Note 1: If the ambient temperature exceeds the range, it shall be agreed upon by both parties. Note 2: The electric fusion welding machine is used for the prefabricated assembly connection of gas/water supply components (such as valves, steel-plastic conversion, etc.) or for the connection of nuclear power pipes, PE-RT pipes for hot and cold water, industrial pipes, composite pipes, etc. When it is agreed upon by the supply and demand parties.

GB/T 20674.2-2020 Referenced Document

• GB 2894 Safety signs and guideline for the use
• GB/T 19212.1-2016 Safety of transformers, reactors，power supply units and combinations thereof—Part 1: General requirements and tests
• GB/T 19212.5 Safety of transformers, reactors, power supply units and similar products for supply voltages up to 1 100V - Part 5: Particular requirements and tests for isolating transformers and power supply units incorporating isolating transformers
• GB/T 20674.3 Plastics pipes and fittings—Equipment for fusion jointing polyethylene systems—Part 3:Operator's badge
• GB/T 2423.10 Environmental testing—Part 2:Test methods—Test Fc:Vibration(sinusoidal)
• GB/T 2423.5 Environmental testing—Part 2: Test methods—Test Ea and guidance: Shock
• GB/T 4208 Degrees of protection provide by enclosure (IP code)
• GB/T 5013.6 Rubber insulated cables of rated voltages up to and including 450/750 V.Part 6: Arc welding electrode cables
• IEC 60068-2-27:2008 Environmental testing - Part 2-27: Tests - Test Ea and guidance: Shock
• IEC 60068-2-6:2007 Environmental testing - Part 2-6: Tests - Test Fc: Vibration (sinusoidal)

GB/T 20674.2-2020 history

• 2020 GB/T 20674.2-2020 Plastics pipes and fittings—Equipment for fusion jointing polyethylene systems—Part 2: Electrofusion
• 2006 GB/T 20674.2-2006 Plastics pipes and fittings.Equipment for fusion jointing polyethylene systems.Part 2:Electrofusion

GB/T 20674.2-2020 -All Parts