Ko te paipa maitai waro, he rauemi taketake e whakamahia whānuitia ana i roto i te rāngai ahumahi, he mahi nui tāna i roto i ngā ahumahi pēnei i te hinu, te miihini matū, me te hanga. Ko ngā paipa maitai waro noa e rua ngā momo matua:paipa maitai kore-tuituimepaipa maitai whakarewa.
Mō te tukanga whakaputa me te hanganga, ka hangaia te paipa rino kore hononga mā te hurihuri whakauru, mā te whakaputa rānei, kāore he hononga whakarewa. He kaha me te pakari whānui tōna, ka taea te tu atu ki ngā pēhanga me ngā pāmahana teitei, ā, he pai mō ngā tono e hiahia ana ki ngā whakaritenga haumaru paipa tino pakari.
Ko te paipa rino whakarewa, i tētahi atu taha, ka hangaia mā te takai me te whakarewa i ngā pereti rino, me te whakamahi i tētahi, neke atu rānei o ngā whakarewa. Ahakoa he nui te whai huatanga o tēnei mahi whakaputa me te iti o te utu, he iti ake te mahi a te paipa i raro i te pēhanga teitei me ngā taiao tino kino i tērā o te paipa tuitui.
Mō ngā paipa maitai kore hononga, ko te Q235 me te A36 ngā momo rongonui. Ko te paipa maitai Q235 he momo maitai hanganga waro e whakamahia whānuitia ana i Haina. He kaha whakaputa o te 235 MPa, he tino pai te kaha whakarewa me te ngāwari ki te hanga i tētahi utu whaitake. He whānuitia te whakamahinga mō te tautoko hanganga whare, ngā paipa wai pēhanga iti, me ētahi atu tono, pērā i ngā paipa wai noho me te hanganga anga maitai o ngā whare wheketere noa.
Paipa maitai waro A36He paerewa o Amerika. He rite tōna kaha whakaputa ki te Q235, engari he kaha kume me te pakari pānga pai rawa atu. He whānuitia te whakamahinga i roto i ngā paipa pēhanga iti i roto i te hanga mīhini me te whakaputa hinu, pērā i te tukatuka wāhanga mīhini iti me ngā paipa hinu pēhanga iti i roto i ngā mara hinu.
Mō ngā paipa maitai kua whakarewaina,Paipa maitai Q235 kua whakarewainaHe momo rongonui anō hoki te paipa whakarewa. Nā te iti o te utu me te pai o te mahi whakarewa, he maha ngā wā e whakamahia ana i roto i ngā kaupapa tuku hau o te tāone me te tuku wai pēhanga iti. I tētahi atu taha, he nui ake te whakamahinga o te paipa whakarewa A36 i roto i ngā paipa ahumahi pēhanga iti me ētahi whakaritenga kaha, pērā i ngā paipa kawe rauemi pēhanga iti i roto i ngā tipu matū iti.
| Ngā Ahu Whakataurite | Paipa Rino Q235 | Paipa maitai waro A36 |
| Pūnaha Paerewa | Paerewa ā-Motu o Haina (GB/T 700-2006 "Hanganga maitai waro") | Te Rōpū Whakamātautau me ngā Rauemi o Amerika (ASTM A36/A36M-22 "Pereti Rino Waro, Āhua, me ngā Pae mō te Whakamahinga Hanganga") |
| Kaha Hua (Iti rawa) | 235 MPa (matotoru ≤ 16 mm) | 250 MPa (puta noa i te whānuitanga matotoru katoa) |
| Awhe Kaha Kume | 375-500 MPa | 400-550 MPa |
| Ngā Whakaritenga Pakari Pānga | Ko te whakamātautau pānga -40°C anake e hiahiatia ana mō ētahi momo tohu (hei tauira, Q235D); kāore he whakaritenga ā-ture mō ngā momo tohu noa. | Ngā Whakaritenga: Whakamātautau pānga -18°C (paerewa wāhanga); he pai ake te pakari o te pāmahana iti i ngā momo Q235 tuku iho |
| Ngā Horopaki Taupānga Matua | Hanganga ā-iwi (ngā hanganga maitai, ngā tautoko), ngā paipa wai/hau pēhanga iti, me ngā wāhanga mīhini whānui | Te hanga miihini (ngā wāhanga iti me te rahi waenga), ngā paipa pēhanga iti o te mara hinu, ngā paipa wai pēhanga iti ahumahi |
I te nuinga o te wā, he rerekē ngā painga o ngā paipa maitai kore hononga me ngā paipa whakarewa. I te wā e hoko ana, me whai whakaaro ngā kaihoko ki ngā whakaritenga pēhanga me te pāmahana o te tono motuhake, tae atu ki tā rātou tahua, ā, me whiriwhiri i tētahi momo e tika ana, pērā i te Q235, te A36 rānei, hei whakarite i te kounga me te haumaru o te kaupapa.
RŌPŪ KĪNGI
Wāhitau
Te rohe ahumahi whanaketanga o Kangsheng,
Takiwa o Wuqing, taone nui o Tianjin, Haina.
Ī-mēra
Ngā Hāora
Mane-Rātapu: Ratonga 24-hāora
Wā tuku: Hepetema-03-2025