The new standard for thin wall stainless steel pip

2022-07-31
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China's thin-walled stainless steel pipes and fittings will revise the new standard

stainless steel compression fittings and thin-walled stainless steel pipes for connection of stainless steel fittings will come into being. Although I am also a master, the new national standard will also have national standards for the connection and construction specifications of these two products

on March 23, at the drafting meeting of thin-walled stainless steel pipes and pipe fittings standards organized by the National Technical Committee for standardization of pipeline accessories, expert representatives of China Architectural Design and Research Institute and representatives of some stainless steel pipe fittings manufacturers made comments on gb/t91228.1 stainless steel compression fittings and gb/t91228.2 thin-walled stainless steel pipes for connection of stainless steel pipe fittings The three national standards gb/t91228.3 "0-shaped sealing ring for stainless steel compression fittings" were discussed, and a consensus was reached on the revision of relevant standards: the outer diameter series of more than 12 stainless steel pipes currently on the market in China will be unified into two basic standard sizes, and the wall thickness of the pipes will be unified into one basic size 90 degrees; The new standard will also regulate the meaning of compression fittings, unify the key dimensions of compression fittings, and provide a unified basis for the application of different metal materials (such as carbon steel, copper and stainless steel) in compression fittings in the future

in addition, the experts also discussed the draft national standard -- Specification for connection and installation of stainless steel pipes and fittings, and decided to put forward specific installation requirements and specifications for the three main types of connection between thin-walled stainless steel pipes and fittings (pressing type, threaded type and welding type according to the strike energy requirements before the card test), so as to provide guidance for the construction unit to construct according to the specifications Provide favorable conditions for relevant units to inspect and accept according to national standards

some experts at the meeting believed that the revision of the new national standard for thin-walled stainless steel pipes and the introduction of the national standard "Specification for the connection and installation of stainless steel pipes and fittings" will enable the product standards of stainless steel pipes and fittings to be accurately connected with the standards of the connection and installation specifications of pipes and fittings, and will make up for the regret that there were only national product standards for stainless steel pipe fittings but no national installation specifications and standards for stainless steel pipe fittings in the past; It will end the history of nonstandard reference of Chinese construction stainless steel pipe standards; It will bring new changes to the standardization and high efficiency of different metal pipes in the construction of building pipelines

it is reported that the revision and preparation of the above four national standards will be completed in October this year. At present, the compilers are collecting more opinions and suggestions from experts of design institutes, users and manufacturers

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