E mafai ona vaevaeina paipa i paipa uʻamea ma paipa e le o uʻamea. Ua toe vaevaeina paipa uʻamea i uʻamea ma non-ferrous ituaiga. O uʻamea uʻamea e tele lava e aofia ai le uʻamea, ae o le uʻamea e le o faʻapipiʻiina o le uʻamea. , faʻapea foʻi ma paipa apamemea, o paipa e le o ni uʻamea. O paipa palasitika, paipa paʻu, paipa paʻu palasitika, paipa tioata, paipa faʻapipiʻi ma isi paipa faʻapitoa e mafai ona faʻaogaina mo faʻamoemoega faʻapitoa e taʻua o paipa e le o ni uʻamea.o paipa uamea carbon e faʻaaogaina tele.ASTM ma ASME tulaga faʻatonutonu le tele o paipa ma mea paipa faʻaaogaina i le alamanuia faagasologa.
Uamea uamea o le uamea sili ona faaaoga i alamanuia, e sili atu nai lo le 90% o le gaosiga o le uʻamea atoa. Faʻavae i luga o le carbon content, ua toe vaevaeina uʻamea carbon i ni vaega se tolu:
I uʻamea faʻafefiloi, o vaega eseese o elemene faʻafefiloi e faʻaaogaina e ausia ai mea e manaʻomia (faʻaleleia) e pei o le weldability, ductility, machinability, malosi, hardenability ma corrosion resistance, ma isi.
u'amea u'amea o se u'amea u'amea ma le chromium anotusi o le 10.5% (maualalo). Fa'aalia u'amea u'amea tulaga ese tete'e ona o le fausia o se u'amea manifinifi sili Cr2O3 i luga o le surface.This layer ua lauiloa foi o le passive layer.Increasing le aofaiga o le chromium o le a atili faaleleia ai le corrosion teteʻe o le material.In faaopoopo i le chromium iSmdenkel manaomia (faaopoopo i le chromium iSmdenkel e manaomia) o lo'o i ai fo'i le tele o le kaponi, silikoni ma manganese. Ua fa'avasegaina atili le uamea e pei o:
I le faaopoopo atu i togi o loʻo i luga, o nisi togi maualuga (poʻo togi faʻapitoa) uʻamea uʻamea o loʻo faʻaaogaina foi i le alamanuia o:
O u'amea meafaigaluega o lo'o i ai le maualuga o le carbon content (0.5% i le 1.5%).O le maualuga o le carbon content e maua ai le malosi ma le malosi.O lenei uamea e masani lava ona fa'aaogaina e fai ai meafaigaluega ma molds.O u'amea meafaigaluega e aofia ai le tele o tungsten, cobalt, molybdenum, ma le vanadium e fa'ateleina ai le vevela o le u'amea ma le ofuina o le tete'e fa'apea fo'i ma mea faigaluega umi.
O nei paipa o loʻo faʻaaogaina lautele i le faʻagasologa o pisinisi. ASTM ma ASME igoa mo paipa e foliga ese, ae o meafaitino togi e tutusa. Eg:
Ole meafaitino ma meatotino ile ASME ma ASTM codes e tutusa sei vagana ai le igoa.O le malosi o le ASTM A 106 Gr A o le 330 Mpa, ASTM A 106 Gr B o le 415 Mpa, ma le ASTM A 106 Gr C o le 485 Mpa.O le paipa u'amea sili ona masani ona fa'aaogaina o le ASTM Gr B1 o le ASTM A 1 B6 paipa u'amea ASTM B6. 30 Mpa, ASTM A 53 (Hot Dip Galvanized poʻo Line Pipe), o se faʻaoga lautele foʻi i le paipa uʻamea carbon mo paipa.ASTM A 53 paipa o loʻo maua i vasega e lua:
ASTM A 53 Pipe ua vaevaeina i ni ituaiga se tolu - Ituaiga E (ERW - Resistance Welded), Ituaiga F (Ogaumu ma Butt Welded), Ituaiga S (Seamless). I le Ituaiga E, ASTM A 53 Gr A ma ASTM A 53 Gr B o loʻo avanoa. I le Ituaiga F, naʻo ASTM A 53 Gr A o loʻo avanoa, aʻo i le Ituaiga S, ASTM ATM A ma le malosi o loʻo maua foi i le Type S, ASTM A 53 Gr B. o le ASTM A 53 Gr A paipa e tutusa ma ASTM A 106 Gr A i le 330 Mpa.O le malosi tensile o le ASTM A 53 Gr B paipa e tutusa ma ASTM A 106 Gr B i le 415 Mpa.O lenei e aofia ai paipa uamea kaponi vasega o loo faaaogaina lautele i le alamanuia faagasologa.
O paipa uamea sili ona faʻaaogaina i totonu o le gaosiga o meaʻai e taʻua o austenitic stainless steels.O le uiga taua o austenitic stainless steel o le le-magnetic poʻo le paramagnetic.Three faʻamatalaga taua mo austenitic stainless steels o:
O loʻo i ai 18 togi i lenei faʻamatalaga, o le 304 L e masani ona faʻaaogaina. O se vaega lauiloa o le 316 L ona o le maualuga o le corrosion resistance.ASTM A 312 (ASME SA 312) mo paipa 8 inisi pe itiiti ifo i le lautele. O le "L" faʻatasi ai ma le vasega o loʻo faʻaalia ai o loʻo i ai se mea maualalo carbon, lea e faʻaleleia ai le lelei o le paipa.
O lenei fa'amatalaga e fa'atatau i paipa uelo lapopoa.
Weldability of Austenitic Stainless Steels - Austenitic stainless steels e maualuga atu le faʻalauteleina o le vevela nai lo le ferritic poʻo martensitic stainless steels.Due to the high coefficient of thermal expansion and low thermal conductivity of austenitic stainless steel, deformation poʻo warpage e mafai ona tupu i le taimi o le uelo. W) e le fautuaina pe a manaʻomia atoatoa austenitic uʻamea uʻamea po o le maualalo ferrite i totonu welds.O le laulau (Faaopoopoga-1) o se taiala mo le filifilia o le uaea filler talafeagai po o electrode e faavae i luga o mea faavae (mo austenitic stainless steels).
Chromium molybdenum tubing e talafeagai mo laina auaunaga vevela maualuga ona o le malosi tensile o le chrome molybdenum tubing e tumau pea e le suia i le taimi o le maualuga o le vevela.O le paipa e maua ai le faʻaogaina i le eletise, vevela, ma mea faapena. O le faʻamau o le ASTM A 335 i le tele o vasega:
O paipa u'amea e fa'aaogaina mo le tapeina o le afi, alavai, otaota, tiute mamafa (i lalo o tiute mamafa) - paipa lalo o le eleele ma isi auaunaga. O togi o paipa u'amea:
E faʻaaogaina paipa uʻamea i lalo o le eleele mo auaunaga afi. E faigata paipa Dürr ona o le i ai o le silicon.O nei paipa e faʻaaogaina mo auaunaga faʻapisinisi faʻatau, e pei o le vasega o loʻo faʻaalia le tetee i le faʻatau pisinisi, ma mo togafitiga vai e faʻaumatia ai otaota otaota.
Na maua e Nirmal Surendran Menon le Bachelor of Mechanical Engineering mai le Anna University, Tamil Nadu, Initia i le 2005 ma le Master of Science in Project Management mai le National University of Singapore i le 2010. O ia o loʻo i totonu o le suauʻu / kasa / petrochemical industry. O loʻo galue nei o ia o se inisinia fanua i luga o le LNG liquefaction project i sautesisifo Louisiana. O ana fiafiaga e aofia ai le faʻamamaina o le paipa o le LNG ma le gau
O Ashish o lo'o umia le tikeri o le tagata malaga i le inisinia ma e sili atu i le 20 tausaga o lona auai tele i le inisinia, fa'amautinoaga lelei/pulea lelei, fa'atauga fa'atauga/mata'ituina, fa'atau, su'esu'ega o puna'oa, uelo, faufale, faufale ma fa'asoa.
Ole suau'u ma kesi fa'agaioiga e masani lava ona tu'u i nofoaga mamao ese mai le ofisa autu o kamupani.O le taimi nei, e mafai ona mata'ituina le fa'agaioiina o pamu, fa'atulaga ma au'ili'ili fa'amaumauga o le seismic, ma siaki tagata faigaluega i le salafa o le lalolagi mai toetoe lava i so'o se mea. Pe o lo'o i ai tagata faigaluega i le ofisa po'o le mamao, o le Initaneti ma fa'aoga feso'ota'iga e mafai ai ona sili atu le tele o fa'amatalaga fa'asologa ma fa'atonutonu nai lo se isi lava taimi muamua.
Fa'asoa ile OILMAN Today, se nusipepa ta'i lua-vaiaso e tu'uina atu i lau pusameli ma mea uma e te mana'omia e te iloa e uiga i tala fou o pisinisi suau'u ma kesi, mea tutupu i le taimi nei ma fa'amatalaga tau alamanuia.