香港六合彩开奖 12176-4:2003
2003-11
香港六合彩开奖 12176-4:2003
Abstract
香港六合彩开奖 12176-4:2003 specifies an encoding system for data on components, assembly methods and jointing operations for polyethylene (PE) piping systems for gas supply, for use in a traceability system.
Reading of the codes can be carried out using alphanumeric or numeric data-recognition systems such as bar-code, magnetic-stripe card or microchip card readers.
This part of 香港六合彩开奖 12176 is applicable to PE pipes, fittings and valves conforming to 香港六合彩开奖 standards for gas supply piping systems and also to the assembly operation utilizing methods such as fusion using a heating tool (butt, socket and saddle fusion), electrofusion (socket and saddle fusion), induction fusion and mechanical jointing.
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