ppr管的规格标识（Specification specification for PPR tubes）.docVIP

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ppr管的规格标识（Specification specification for PPR tubes）.doc

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ppr管的规格标识（Specification specification for PPR tubes）

ppr管的规格标识（Specification specification for PPR tubes） PPR tube spec: DN15, DN20, DN25 is the outside diameter. In charge of four and six in charge of the diameter 1 inches =25.4 mm =8 points 1/2 is four points (4 points) DN15 3/4 is six points (6 points) DN20 2 in charge of DN8 4 in charge of DN15 6 in charge of DN20 1 DN25 1.2 DN32 1.5 DN40 2 DN50 2.5 DN65 3 DN80 4 DN100 5 DN125 6 DN150 8 DN200 10 DN250 12 DN300 GB/T50106-2001 2.4 diameter 2.4.1 diameter should be mm units. Expression of 2.4.2 in diameter shall comply with the following provisions: 1 water gas delivery pipe (galvanized or non Galvanized), cast iron pipes and other pipes, pipe diameter should be nominal diameter DN; Welded steel pipe seamless steel pipe (2, straight or spiral seam), copper pipe, stainless steel pipe, pipe diameter, outer diameter and thickness should be said; 3 reinforced concrete (or concrete) pipe, clay pipe, acid resistant ceramic tube, pipe and other pipe diameter should be gangwa, with inner diameter of D said; 4 plastic pipe, the diameter should be expressed by the method of product standards; 5 when design with nominal diameter DN diameter, its nominal diameter is DN and the corresponding product specification table. The building water supply and drainage with a hard polyvinyl chloride pipe specifications with de (nominal diameter) * e (nominal wall thickness) said (GB 5836.1-92) Standard Specification for PPR pipe pipe series S, nominal diameter DN * nominal wall thickness en For example: PPR S5, PPR series pipe nominal diameter dn25mm, nominal wall thickness PPR en2.5mm Said S5, DN25 * en2.5mm PPR series: S tube is used to represent the dimensionless numerical series of PPR pipe specifications, as S= (dn-en) / 2 EN Where: DN - PPR nominal diameter, unit is mm En - PPR nominal wall thickness, the unit is mm The commonly used PP-R pipe specifications are 5, 4, 3.2, 2.5, 2, five series PPR pipe PPR pipe specifications according to the standard size rate SDR value were 11, 9, 7.