How is Chinese hot-rolled steel plate suitable for infrastructure projects in Central America?A complete analysis of key grades such as Q345B

Efere igwe na-ekpo ọkụ na-ekpo ọkụ: njirimara bụ isi nke nkume nkuku ụlọ ọrụ mmepụta ihe
Efere ígwè na-ekpo ọkụa na-eme ya site na billet site na ntụgharị okpomọkụ dị elu. Ọ na-anya isi uru nke nnukwu ike mgbanwe na ike formability, na-eme ya ọtụtụ ebe na-ewu ụlọ, akụrụngwa, igwe n'ichepụta, na ndị ọzọ ubi.

Dị ka data sitere na Latin American Steel Association si kwuo, mbubata nchara nke Central America bụ 11% nke mkpokọta Latin America, ọkara nke sitere na China.

Ihe ndị dị mkpa zụrụ na China na Central America na ngwa ha

(I) Alloy dị ala, ígwè dị ike dị elu: Q345B
Q345B bụ ihe “kwesịrị ịnwe” maka ọrụ akụrụngwa Central America. Site na ike mkpụrụ nke 345 MPa, ọ na-ejikọta ọmarịcha weldability na nguzogide mmetụta. Ọ na-akwado ụkpụrụ GB/T ma bụrụkwa ISO9001 asambodo.

N'ime nnukwu ọrụ mgbasawanye pipeline abụọ dị na Nicaragua, a zụtara ngụkọta nke 1,471.26 tọn Q345B nchara mpempe akwụkwọ na-ekpo ọkụ Larsen n'otu oge. A na-eji ihe ndị a wuo ntọala nke pipeline 87.2 kilomita, ọdụ ụgbọ mmiri ise, na otu ụlọ ọrụ na-ekpocha mmiri. Dị na 9m, 12m, na 15m ogologo, ha dabara nke ọma omimi nke achọrọ n'okpuru ala. Isi uru nke ihe a bụ nkwụsi ike nhazi ya na ihu igwe okpomọkụ, nke mmiri ozuzo, ebe ọ na-enye ọnụ ahịa arụmọrụ karịa nke ngwaahịa mpaghara.

(II) Carbon Structural Steel dị elu: SPHT1 na usoro SAE

SPHT1: Dị ka stampụ nchara n'okpuru ọkọlọtọ JIS Japanese, SPHT1 aghọwo nhọrọ kacha mma maka iwu ụlọ na Dominican Republic n'ihi nnukwu plasticity na ike ya. Royal Steel ahaziri mbụ tọn 900 nke SPHT1 eriri igwe akpọrepu ọkụ maka onye ahịa Dominican. Ka emechara akara stamping na nhazi ọzọ n'ime ọkpọkọ, a na-eji SPHT1 na-ewu pipeline obodo. Ike ya guzozie eguzozi na nhazi ya mere ka ọ dị mma maka mkpa ịgbanye pipeline ugboro ugboro na Central America.

SAE 1006/1008: Steel abụọ a na-ekpo ọkụ na-ekpo ọkụ na-ekpo ọkụ bụ isi ihe maka ịmepụta ihe nhazi dị arọ. Otu mgbe Royal Steel Group bupụrụ eriri igwe na-ekpo ọkụ 14,000 SAE 1008 na Brazil.

(III) Igwe Ọkpụkpọ Igwe Ọdụdọ: A588 Gr B
A588 Gr B igwe na-ekpuchi ihu igwe, yana oyi akwa nchara na-agwọ onwe ya, enwetala òkè ahịa na oke iru mmiri na gburugburu ebe na-emebi emebi dị na akụkụ nke Central America.
Meksiko webatara otu puku tọn atọ nke A588 Gr B efere igwe na-ekpo ọkụ na-ekpo ọkụ site na ụlọ ọrụ anyị maka iji mee ihe na akwa mmiri dị n'ụsọ oké osimiri na ihe owuwu ọdụ ụgbọ mmiri.

(IV) Carbon Steel General-Ebumnobi: SS400 na ASTM A36 ihe ndị bụ isi.
SS400 (ọkọlọtọ Japanese) naASTM A36(Ọkọlọtọ America) bụ "ihe ndị dị mkpa" maka ụlọ ọrụ Central America. Site na ike mkpụrụ nke 245 MPa na 250 MPa, n'otu n'otu, ha dabara adaba maka akụrụngwa nhazi dị ala na nrụpụta igwe n'ozuzu. Ndị ahịa Colombian Royal Steel Group na-azụta efere igwe nwere ụkpụrụ 3.0mm nke SS400 maka ngwa mgbochi na-eme njem na nyiwe ihe owuwu.

Ụlọ ọrụ Royal Steel Groupna-enye ọrụ “nhazi + ngwa ngwa”, na-enyere aka ilebara usoro ọrụ siri ike na Central America.

Ọnụ ahịa efere igwe na-ekpo ọkụ na-ekpo ọkụ nke China dị 15%-20% dị ala karịa nke dị na Europe na United States. Royal Steel Group, nke hiwere isi na Tianjin, na-anya isi na netwọk mbupu site na Tianjin Port na Shanghai Port, na-erute ebe ndị dị ka Nicaragua na Mexico, na-ebelata ọnụ ahịa ịzụ ahịa n'ozuzu ya.

Anyị ji ezi obi na-anabata ajụjụ na mmekorita sitere na ụlọ ọrụ akụrụngwa, ndị na-emepụta igwe, na ndị mmekọ azụmaahịa na Central America na gburugburu ụwa! Ma ọ tozuru oke, akara ule dị ka Q345B na SPHT1, ma ọ bụ ngwaahịa ahaziri iche dị ka A588 Gr B weathering steel na Q420B igwe siri ike, Royal Steel Group na-enye ọrụ nkwụsịtụ, gụnyere otu n'otu n'otu nhazi usoro teknụzụ, nnyefe n'efu, yana nleba anya mbupu oke osimiri zuru oke, iji nyere aka ọrụ gị nweta mbelata ọnụ ahịa, na oge. Anyị na-atụ anya iso gị rụọ ọrụ iji wuo ụkpụrụ ọhụrụ maka mmepe ụlọ ọrụ na akụrụngwa na Central America!