Chitoliro cha Chitsulo cha Ductile Chitsogozo cha Miyezo ya Brazil: NBR7675 & NBR15420:2022 Kufotokozedwa

Muyezo wa ku BrazilNBR7675ndiye mfundo yayikulu yogwiritsira ntchito mapaipi achitsulo opangidwa ndi ductile (mapaipi a DI) m'madzi, kuphatikizapo:

• Zofunikira pakupanga mankhwala pazinthu zapaipi (kaboni, silicon, manganese, phosphorous, sulfure, ndi zina zotero)
• Zizindikiro za magwiridwe antchito a makina (mphamvu yokoka ≥420 MPa, mphamvu yotulutsa ≥300 MPa, kutalika ≥10%)
• Kulekerera kwa miyeso ndi miyezo ya kulemera
• Zofunikira zaukadaulo pakuphimba mkati ndi kunja
• Miyezo yoyesera kuthamanga kwa madzi

Muyezo waposachedwa,NBR15420:2022, ndi kusintha kwakukulu kwa miyezo ya ku Brazil mu 2022. NBR15420:2022 ikulimbitsa mbali zotsatirazi poyerekeza ndi muyezo wakale:

• Zofunikira pakusintha chilengedwe: Zimawonjezera kukana kwa nyengo ndi kukana kwa UV kwa zophimba kuti zigwirizane ndi nyengo zosiyanasiyana ku Brazil.
• Mafotokozedwe a momwe zinthu zimayendera: Amafotokozera bwino kapangidwe ndi zofunikira pakukhazikitsa mapaipi achitsulo opangidwa ndi ductile m'malo omwe amakhudzidwa ndi zivomerezi.
• Miyezo yokhazikika: Imawonjezera zofunikira zobwezeretsanso zinthu ndi zizindikiro zowunikira nthawi ya moyo.
• Kugwirizana kwa madzi anzeru: Kumasunga miyezo yaukadaulo yolumikizirana ndi makina amadzi anzeru amtsogolo.

Mapaipi achitsulo a DINSEN opangidwa ndi ductile samangotsatira miyezo iwiri ya ku Brazil yokha, komanso amawaposa pazizindikiro zazikulu za magwiridwe antchito.

• Kapangidwe kamphamvu kwambiri: Pa kukula konse kwa DN80-DN2600, mphamvu yeniyeni yolumikizira imafika 450-500 MPa, kupitirira muyezo ndi 20%.
• Kutalikirana kwabwino kwambiri: Kutalikirana kumasungidwa nthawi zonse pa 12-15%, zomwe zimapangitsa kuti nthaka ikhale yolimba komanso yokhazikika bwino.
• Dongosolo lapadera lopaka utoto: Pogwiritsa ntchito primer yokhala ndi zinc yambiri komanso epoxy resin yothandiza kwambiri, yadutsa mayeso opopera mchere kwa maola opitilira 3000, zomwe zapitirira zofunikira zonse.

Mapaipi achitsulo a DINSEN ductile, yoposa miyezo ya ku Brazil ya NBR7675 ndi NBR15420:2022 muubwino, kuphatikiza kumvetsetsa bwino zosowa zapadera za msika waku Brazil, imapereka mayankho odalirika, osawononga ndalama, komanso okhazikika a mapaipi pamapulojekiti amadzi. Sitikungopereka zinthu zokha komanso ndife ogwirizana kwa nthawi yayitali pakukonza zomangamanga ku Brazil, odzipereka kukonza chitetezo ndi magwiridwe antchito a machitidwe amadzi aku Brazil kudzera muukadaulo watsopano.

Kuti mudziwe zambiri za ukadaulo ndi zitsanzo za polojekiti ya mapaipi achitsulo a DINSEN ogwirizana ndi miyezo ya ku Brazil, chondeLumikizanani nafeza deta yaukadaulo.