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              ھԃԒ
              13808425930  
              ܏DNDeքeʾʲôʲô^eһĸ㶮
              ϢԴ   lrg2022-10-8   g[
              hdzý挦NܸĹܲʮбҪеT

              ƪҪv܏@ǂ^۵Ć}韩ҪڸNʾČҽx⏽DeͨAֱ/⏽QֱDN÷ͅ^e
              DN Deʾʲô
               01  DNָܵĹQֱ  
              ͨÁ\䓹
              QֱùmmʾҲӢinʾ·ҲùQֱʾxͬпpcӢƆλČPϵ£ 
              Qͨ(nominal diameter)ַQƽ⏽(meanoutside diameter)@ǾԽٹܵĹ赺ܱ⏽c܃ȏoȡܵ⏽cܵăȏ֮ƽֵ܏Q
              DNǹQͨQͨ(йQֱ)ǸNc·ͨÿڏQͨǹõһĈAcӹߴHʲPϵͬһQֱĹc·໥BлQnjHxϵĹܵ⏽ȏmȻ䔵ֵܵȏ^ӽ
              䓹ܰȿɷ֞鱡䓹ͨ䓹ܺͼӺ䓹乫Qֱ⏽Ҳǃȏǽͨ䓹܃ȏһxߴÿһQֱһ⏽ȏֵSȲͬͬ
               02   DeҪָܵ⏽  
              Ҫop䓹PVCϹܵҪ_ںĹܲ
              һDeעҪע⏽Xںʽ
              \䓹ܞDNDeɷNע£ 
              DN20 De25X2.5mm
              DN25 De32X3mm
              DN32 De40X4mm
              DN40 De50X4mm
              ҂TʹDNע䓹ڲ漰ںrºʹDeעܵעܾһ߀ǸИITPHʩ^҂ԷQ202532ȹָܵDeָDN
              ڬFČ`򞣺
              aɷNܵϵBӷʽzBӼmB 
              b\䓹PPRܾܲσɷNBֻС50Ĺܵýz^50÷m^ɿ
              psǃɷNͬ|ĽٹܵBҪ]Ƿaԭ늳طtٻSٲϹܵĸgٶҪ÷mBz|ƬĽ^|ɷNٷָ_˨ҪÉ|Ƭָ|
              ߀ܱʾܲĵ⏽Ǵ˕rԓԱں
               03   ʾͨAֱ
              Ȼ߀ܱʾܲĵ⏽Ǵ˕rԓԱں磺253ʾ⏽25mmں3mmĹܲ
              op䓹ܻɫٹܵע⏽ں磺1074Цʡ
              ЇISOձIJ䓹ܘעñںߴʾ䓹ܱںϵ@䓹ʾ⏽ں磺60.53.8
              ܲĹQֱ⏽ձ


              DN DeDg ą^e
              DN Nominal diameter
              De external diameter
              Dg diameter gong(hZƴ•ĸ) @,Dg LJa؛ Їɫća؛Fڶ
                DN DeDg Pϵ  
              De ǹܵڵֱ
              DN De pһܱڵĺȵõĔ
              Dg һ]
              ʾͨAֱ
              ܏ mm λ܏ı_ʽҎ

              ˮúݔ䓹(\\)TFܵȹܲ܏ԹQֱ DNʾ
              op䓹䓹(ֱpp)~P䓹ܵȹܲ܏⏽ںʾ
              䓽()մɹ߹ܵȹܲ ܏ԃȏ d ʾ
              Ϲܲ܏˰aƷ˜ʵķʾ
              OӋùQֱ DN ʾ܏rйQֱ DN caƷҎձ

              ˮӲϩܲҎ de(Q⏽)e(Qں)ʾ(GB 5836.1-92)oˮþ۱ϩ(PP)ܲҎ dee ʾ(Q⏽ں) Ϲڹ̈DϵĘʾ
              Ƙʾ ( metric dimension size )
              DNʾ һQ顰Qߴ硱ǹ⏽Ҳǹ܃ȏ⏽cȏƽֵ҂Qƽȏ
              ⏽ 63mm Ϲ֮Ƙʾ ( mm dimension size ) DN50
              ISO Ƙʾ ( ISO metric dimension size )
              Da ʾ PVC ABS ֮⏽
              De ʾ PP PE ֮⏽
              ⏽ 63mm Ϲ֮Ƙʾ ( mm dimension size ) 
              Da63 PVC ABS ܶ
              YDeDNdĸԱʾ

              De-- PPRPE۱ϩ ⏽ 
              DN-- ϩPVCTF܏ͺϹ\䓹ܹQֱ 
              d -- ܹQֱ 
              -- op䓹ܻɫٹܵע⏽ں



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