Fa'amanuiaga o paipa u'amea A252 Vasega 3 o lo'o fa'aaogaina i le faugāvai ma le suau'u.

Fa'amanuiaga o paipa u'amea A252 Vasega 3 o lo'o fa'aaogaina ile fa'apalapala ma le suau'u paipa fau ata Fa'aalia.

Fa'amatalaga Puupuu:

A252 Vasega 3 paipa uamea, e lauiloa foipaipa fa'a'ele'ele fa'afefe, o se filifiliga lauiloa mo le fauina o le paipa ma le suauu.O nei paipa ua mamanuina e tatalia tulaga ogaoga ma ofoina atu le tele o tulaga lelei i nei talosaga.

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Fa'amatalaga Oloa

Faailoga o oloa

O se tasi o faamanuiaga autu oA252 Vasega 3 paipa uamea o lona malosi uiga ese ma le tumau.O nei paipa e faia i le sila maualuga ma e matua tete'e i le pala, ofuina ma le a'afiaga.O le mea lea e lelei ai mo le fa'aoga i paipa paipa e ono a'afia ai i mea pala ma uta mamafa.E le gata i lea, o lo latou malosi ma le tumau e talafeagai mo le faʻaaogaina i le fausiaina o paipa suauu, aua e tatau ona latou tatalia le maualuga o le mamafa ma suiga o le siosiomaga.

Tulaga	Vasega uamea	Vaega o Vailaau Fa'asaina (%)						Meatotino Teisi						Charpy(V notch) Su'ega o A'afiaga
		c	Mn	p	s	Si	Isi	Malosi e maua（Mpa）		Malosi Tetele（Mpa）		（L0=5.65 √ S0 ） min Fua Fa'aloloa （%）
		maualuga	maualuga	maualuga	maualuga	maualuga	Isi	min	maualuga	min	maualuga	D ≤ 168.33mm	D ＞ 168.3mm
GB/T3091 -2008	Q215A	≤ 0.15	0.25＜ 1.20	0.045	0.050	0.35	Fa'aopoopo NbVTi e tusa ai ma GB/T1591-94	215		335		15	> 31
	Q215B	≤ 0.15	0.25-0.55	0.045	0.045	0.035		215		335		15	> 31
	Q235A	≤ 0.22	0.30＜ 0.65	0.045	0.050	0.035		235		375		15	>26
	Q235B	≤ 0.20	0.30 ≤ 1.80	0.045	0.045	0.035		235		375		15	>26
	Q295A	0.16	0.80-1.50	0.045	0.045	0.55		295		390		13	>23
	Q295B	0.16	0.80-1.50	0.045	0.040	0.55		295		390		13	>23
	Q345A	0.20	1.00-1.60	0.045	0.045	0.55		345		510		13	>21
	Q345B	0.20	1.00-1.60	0.045	0.040	0.55		345		510		13	>21
GB/ T9711- 2011 (PSL1)	L175	0.21	0.60	0.030	0.030		Fa'aopoopo i ai se tasi o elemene NbVTi po'o so'o se tu'ufa'atasiga o ia mea	175		310		27		Tasi pe lua o le fa'ailoga faigata o e mafai ona filifilia le malosi o le a'afiaga ma le sele.Mo L555, vaʻai i le tulaga masani.
	L210	0.22	0.90	0.030	0.030			210		335		25
	L245	0.26	1.20	0.030	0.030			245		415		21
	L290	0.26	1.30	0.030	0.030			290		415		21
	L320	0.26	1.40	0.030	0.030			320		435		20
	L360	0.26	1.40	0.030	0.030			360		460		19
	L390	0.26	1.40	0.030	0.030			390		390		18
	L415	0.26	1.40	0.030	0.030			415		520		17
	L450	0.26	1.45	0.030	0.030			450		535		17
	L485	0.26	1.65	0.030	0.030			485		570		16
API 5L(PSL 1)	A25	0.21	0.60	0.030	0.030		Mo le sila B, Nb+V ≤ 0.03%; mo u'amea ≥ vasega B, fa'aopoopo le Nb po'o le V po'o latou tuufaatasiga, ma Nb+V+Ti ≤ 0.15%	172		310		(L0=50.8mm) ia avea fa'atatau ile fua fa'atatau lea: e=1944·A0 .2/U0 .0 A: Vaega o fa'ata'ita'iga ile mm2 U: Fa'ata'ita'i le malosi fa'amaoti ile Mpa		Leai pe leai po o mea uma e lua le aafiaga malosi ma le seleina e mana'omia le vaega e fai ma fa'ailoga faigata.
	A	0.22	0.90	0.030	0.030			207		331
	B	0.26	1.20	0.030	0.030			241		414
	X42	0.26	1.30	0.030	0.030			290		414
	X46	0.26	1.40	0.030	0.030			317		434
	X52	0.26	1.40	0.030	0.030			359		455
	X56	0.26	1.40	0.030	0.030			386		490
	X60	0.26	1.40	0.030	0.030			414		517
	X65	0.26	1.45	0.030	0.030			448		531
	X70	0.26	1.65	0.030	0.030			483		565

O le isi tulaga lelei o le paipa uʻamea A252 Grade 3 o lona faʻaogaina.O nei paipa o loʻo maua i le tele o lapopoa ma mafiafia, e mafai ai ona talafeagai mo le tele o faʻaoga.Pe fausia se tamailaina alavaipoʻo se laina paipa suauʻu tele, A252 Vasega 3 paipa uʻamea e mafai ona faigofie ona faʻapipiʻiina e faʻafetaui manaoga faʻapitoa o galuega.E le gata i lea, o nei paipa e mafai ona fai i totonupaipa fa'avae vaega 'ō'ō, fa'alautele atili lo latou fa'aogaina i galuega faufale.

I le faaopoopo atu i lona malosi ma le agavaʻa, o le paipa uʻamea A252 Grade 3 e lauiloa foi mo lona taugofie.O nei paipa e faigofie lava ona faʻapipiʻi ma manaʻomia sina tausiga itiiti, faʻaitiitia ai le aofaʻi o tau o le poloketi.E le gata i lea, o lo latou ola umi o le tautua ma le faʻaleagaina o meaʻai e mautinoa latou te maua ai se tupe maua malosi i tupe teufaafaigaluega mo otaota mapaipa suauu lainagaluega faufale.

O le isi fa'amanuiaga taua o le paipa u'amea A252 Grade 3 o lona feso'ota'iga ma le tele o auala faufale.O nei paipa e mafai ona fa'apipi'i e fa'aoga ai auala eli fa'aleaganu'u po'o auala e leai ni ala e pei ole vili fa'ata'ita'i fa'ata'ita'i, vili paipa po'o le micro-tunneling.O lenei fetuutuunai e mafai ai ona faʻapipiʻiina lelei ma taugofie i le tele o siʻosiʻomaga luʻitau, e aofia ai nofoaga i taulaga, alavai ma nofoaga maaleale o le siosiomaga.

Aotelega, A252 Vasega 3 paipa u'amea ofo mai le tele o tulaga lelei mo le paipa ma le suauu paipa.O lo latou malosi, tumau, agavaʻa ma le taugofie e faʻamaonia ai i latou mo nei talosaga faigata.Pe fa'aaogaina i le fa'aogaina o le paipa po'o le suau'u, o nei paipa e maua ai le fa'atinoga fa'atuatuaina ma le tau umi.O le i'uga, o lo'o tumau pea le vaifofo o filifiliga mo inisinia ma konekarate o lo'o su'e vaifofo mautu ma fa'atuatuaina.

Muamua: Paipa uelo fa'ata'amilo mo lalo o le eleele kasa masani

Sosoo ai: Tulaga lelei o le fa'aogaina o paipa u'amea kabonu uamea

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