Delimitation of the scale is not greater than 150mm nominal diameter thin-walled stainless steel pipe requirements, test methods, inspection rules and signs, packaging, transportation and storage.
The scale used to work together is not greater than the pressure 1.6MPa, transport drinking water, subsistence drinking water, hot water and the temperature was less than 135 high temperature water pipes with thin wall stainless steel pipes, others such as water, air, medical gas can also refer to use such pipeline.
2. Reference scale
Provisions contained in the following scale, through reference in this scale, constitute provisions of scale. The scale is published, the editions indicated were valid. All scales will be revised, the parties should use the scale of the latest version using the following scale can be of.
GB/T222-1984 steel sampling of samples for chemical analysis and chemical composition of finished products promise deviation
GB/T223 steel and alloy chemical analysis method
GB/T228-1987 metal tensile test
GB/T241-1990 metal tube hydraulic pressure test
GB/T242-1997 Test methods for expanding metal tubes
GB/T244-1997 metal tube bending test method
GB/T246-1997 metal tube flattening test methods
GB/T6397-1986 metal tensile test specimen
GB/T7735-1995 steel eddy current inspection method
On March 23, in the pipeline fittings by standardization technical committee of stainless steel tube and organization of thin-walled tube standards drafting work conference, Chinese architecture design institute of experts representing and partial stain-less steel producer of GB/T91228.1 "stainless steel tube, the viega profi-press GB/T91228.2 connected with the stain-less steel and stainless steel tube and GB/T91228.3" stainless steel pipe with 0 viega profi-press seal ring "three national standards are discussed, and the related standard revision consensus: put on the market at present more than 12 stainless steel pipe diameter series for 2 basic standard size, and the pipe wall thickness for a basic dimensions, The new standards will regulate the viega profi-press fitting meaning, unified viega profi-press pipe size, and the key to the future of metal materials (such as different carbon steel, copper and stainless steel) in the application of the viega profi-press fittings to provide a unified pipe diameter.
In addition, participating in drafting the experts also national standards - the stainless steel pipe and pipe connection and installation standard is discussed, and the decision of stainless steel pipe and tube wall between the three kinds of main connection mode (viega profi-press, threaded, welding type) and put forward a concrete installation requirements and specifications, according to standard construction, the construction unit for the relevant units according to the national standards of inspection and acceptance provides favorable conditions.
