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    He Aratohu Whānui a SAWH ki te Ngongo: Paipa Rino A252 Tau 1 mō ngā Whakamahinga Hinu me te Hau

    He Aratohu Whānui a SAWH ki te Ngongo: Paipa Rino A252 Taumata 1 mō ngā Whakamahinga Hinu me te Hauhanga Whakaahua Matua
    • He Aratohu Whānui a SAWH ki te Ngongo: Paipa Rino A252 Tau 1 mō ngā Whakamahinga Hinu me te Hau

    Whakaahuatanga Poto:

    He whānuitia te whakamahinga o ngā paipa SAWH (Submerged Arc Welded Spiral) i roto i te umanga hinu me te hau nā tōna kaha me tōna roa. I roto i tēnei tuhinga, ka tūhuratia e mātou ngā āhuatanga matua me ngā painga oPaipa maitai A252 Tau 1 e whakamahia whānuitia ana i roto i ngā tono hinu me te hau. Hei whakamutunga, ka mārama koe ki ngā paipa SAWH me tō rātou hiranga i roto i te umanga.


    Taipitopito Hua

    Ngā Tohu Hua

    1. Kia mohio ki te paipa SAWH:

    Ngā paipa SAWHhe mea hanga mai i ngā pereti maitai kua whakaritea kia porowhita. Ka hangaia ngā rau hei ngongo, ka whakarewahia mā te whakamahi i te tukanga whakarewa pewa i raro i te wai. Mā tēnei tikanga whakarewa ka whakarite he whakarewa kaha, he whakarewa tonu i te roanga katoa o te paipa, ka tino ātete ki ngā āhuatanga ahotea o waho pērā i te pānga me te pēhanga. E mōhiotia ana ēnei paipa mō tō rātou kaha kawe kawenga me te hanganga pai, he mea tino pai mō te kawe hinu me te hau.

    2. Paipa maitai A252 taumata 1:

    Ko te A252 GRADE 1 he whakatakotoranga mō ngā paipa maitai hanganga i hangaia mō ngā tono pēhanga. He mea hanga ēnei paipa mai i te maitai A252, he tino pai ngā āhuatanga miihini me te kaha kume teitei. E whakamahia whānuitia ana te paipa maitai A252 GRADE 1 nā tōna kaha ki te tu atu i ngā pēhanga teitei me te ātete i te waikura me te whakarerekētanga i roto i ngā taiao hinu me te hau kino.

    Āhuatanga Mīhini

    kounga maitai

    te kaha hua iti rawa
    Mpa

    Te kaha o te kume

    Te roanga iti rawa
    %

    Pūngao pānga iti rawa
    J

    Te matotoru kua tohua
    mm

    Te matotoru kua tohua
    mm

    Te matotoru kua tohua
    mm

    i te pāmahana whakamātautau o
     

    <16

    ＞16≤40

    <3

    ≥3≤40

    		 ≤40

    -20℃

    0℃

    20℃
    S235JRH

    235

    225

    360-510

    360-510

    24

    -

    -

    27
    S275J0H

    275

    265

    430-580

    410-560

    20

    -

    27

    -
    S275J2H

    27

    -

    -
    S355J0H

    365

    345

    510-680

    470-630

    20

    -

    27

    -
    S355J2H

    27

    -

    -
    S355K2H

    40

    -

    -

    3. Ngā painga o te paipa maitai A252 karaehe 1:

    a) Kaha me te Pūmau:Paipa maitai A252 TAU 1He kaha, he pakari hoki, ka taea te tu atu i ngā kawenga taumaha, ā, he pai hoki mō ngā pūnaha tuku hinu me te hau. Nā tōna kaha kume teitei ka roa te mau, ā, ka whakaiti i ngā whakaritenga tiaki.

    b) Ātete ki te waikura: He ngāwari te waikura o ngā paipa hinu me te hau nā ngā āhuatanga taiao kino. Kei roto i te paipa maitai A252 GRADE 1 he paninga ātete-waikura anō, pērā i te epoxy honohono-whakakotahi (FBE), hei whakapai ake i tōna pakari me te whakaroa i tōna roanga mahi.

    c) Ngāwari: Ka taea te hanga i ngā paipa SAWH i roto i ngā momo diameter me ngā roa hei whakatutuki i ngā whakaritenga kaupapa motuhake. Mā tēnei ngāwari ka māmā ake te tāutanga me te kore e hiahiatia he hononga maha, ka whakaiti i te mōrearea o ngā turuturu.

    d) He whai hua te utu: He otinga whai hua te paipa maitai A252 Grade 1 mō ngā paipa hinu me te hau. Nā te roa o te ora mahi me te iti o ngā whakaritenga tiaki ka whakaitihia ngā utu whakahaere i te roanga o te wā.

    Paipa mō te raina wai o raro whenua

    Te Hanganga Matū

    Te taumata maitai

    Momo tango-waikura a

    % mā te papatipu, mōrahi

    Ingoa maitai

    Tau maitai

    C

    C

    Si

    Mn

    P

    S

    Nb

    S235JRH

    1.0039

    FF

    0,17

    —

    1.40

    0,040

    0,040

    0.009

    S275J0H

    1.0149

    FF

    0,20

    —

    1.50

    0,035

    0,035

    0,009

    S275J2H

    1.0138

    FF

    0,20

    —

    1.50

    0,030

    0,030

    —

    S355J0H

    1.0547

    FF

    0,22

    0,55

    1,60

    0,035

    0,035

    0,009

    S355J2H

    1.0576

    FF

    0,22

    0,55

    1,60

    0,030

    0,030

    —

    S355K2H

    1.0512

    FF

    0,22

    0,55

    1,60

    0,030

    0,030

    —

    a. Ko te tikanga tango-waikura e whai ake nei:

    FF: He maitai kua whakamatea katoatia kei roto ngā huānga here hauota i roto i ngā rahinga e ranea ana hei here i te hauota e wātea ana (hei tauira, iti rawa 0,020% Al katoa, 0,015% Al wairewa rānei).

    b. Kāore e pā te uara mōrahi mō te hauota mēnā he iti rawa te ihirangi Al katoa o te hanganga matū o te 0,020 % me te ōwehenga Al/N iti rawa o te 2:1, mēnā rānei he nui ngā huānga here-N kē atu kei roto. Me tuhi ngā huānga here-N ki roto i te Tuhinga Tirotiro.

    4. Te whakamahinga o te paipa maitai A252 tohu 1:

    He whānuitia ngā whakamahinga o te paipa maitai A252 Grade 1 i roto i te umanga hinu me te hau, tae atu ki:

    a) Ngā paipa tuku: e whakamahia ana hei kawe i te hinu mata, te hau māori me ētahi atu hua hinu mai i ngā mara whakaputa ki ngā whare whakapai hinu me ngā pokapū tohatoha.

    b) Te Keri i te Moana-a-Kiwa: Ka whakamahia ngā paipa SAWH i roto i ngā mahi keri hinu me te hau i te moana. Nā te ātete ki te waikura me te kaha ki te pēhanga teitei, he pai mō te tūhuratanga moana hohonu.

    c) Whare Whakapaipai: E whakamahia whānuitia ana ngā paipa maitai A252 GRADE 1 i roto i ngā whare whakapai hei kawe i te hinu mata kua tukatukahia me ngā hua hinu.

    Paipa SSAW

    Hei whakamutunga:

    He mea nui te mahi a ngā paipa SAWH, inā koa ngā paipa maitai A252 GRADE 1, i roto i tepaipa hinu me te hauumanga. Nā te kaha, te roa, me te ātete ki te waikura, he mea pono ēnei mō ngā momo mahi maha. Mā te mārama ki ngā painga o ngā paipa SAWH me ōna āhuatanga motuhake ka āwhina i te kawe angitu o te hinu me te hau, me te whakaiti hoki i ngā utu tiaki me te whakapiki i te whai huatanga o te kaupapa.

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