I ke ao hoʻokūkū o ke kūʻai ʻana i ke kila B2B, ke koho ʻana ma waena o ASTM A53 Grade Aa me ka Papa Bʻaʻole wale ia he ʻano loea—he hoʻoholo ia e hoʻopilikia ana i nā palena palekana o kāu papahana a me kāu kumukūʻai pae holoʻokoʻa. Ma ke ʻano he mea hana alakaʻi maTianjinE Yuantai Derun Group, ua ʻike mākou pehea e hiki ai i kahi hemahema iki i nā kikoʻī ke alakaʻi i nā hewa logistical pipiʻi.
Hoʻōki i ke kuhi ʻana: No ke aha he mea koʻikoʻi ka helu ʻana i ka manawa maoli
ʻO kekahi o nā "mea pepehi kālā" nui loa ma ke kālepa honua, ʻo ia ka kuhi kaumaha pololei ʻole. Hilinaʻi ka nui o nā luna kūʻai i nā pakuhi kumumanaʻo, akā i ka wā e noʻonoʻo ai ʻoe i ka neʻe ʻana mai SCH 40 i SCH 80, hiki i ke kaumaha ke lele ma kahi o 50% (no ka laʻana, ʻo kahi paipu NPS 6″ e hele ana mai ~28.26 kg/m a i ~42.56 kg/m).
ʻAʻole wale kēia e pili ana i ke kila; e pili ana ia i kāu ukana moana a me ka hiki ke crane. No ka hoʻoponopono ʻana i kēia, ua hoʻohui mākou i kahi Live Spec & Weight Validator ma lalo nei. ʻAʻole e like me nā papa static, hōʻailona kēia mea hana i nā paio hana hiki ke loaʻa—e like me ka wā e ʻoi loa ai ka mānoanoa o ka paia i noi ʻia no nā kaʻina hana ERW maʻamau.
ʻO ke kuamoʻo mīkini: No ke aha mākou e paipai ai i ka Papa B
ʻOiai ua ʻōlelo pinepine ʻia ʻo Grade A no kona mau waiwai pelu anu kiʻekiʻe, ʻo ASTM A53 Grade B ka "lio hana" o ka ʻoihana. Eia ke kumu:
ʻOi aku ka nui o ka hua, ʻoi aku ka palekana o nā hale:Mai piliwaiwai me ka palena 205 MPa o ka Papa A. Hoʻokiʻekiʻe ka ASTM A53 Papa B i ka ikaika hua a hiki i ka 240 MPa. ʻAʻole wale kēlā ikaika keu 17% he helu—ʻo ia ka ʻokoʻa ma waena o kahi papahana i hala iki a me kahi i kūkulu ʻia no nā ʻoihana hana kaumaha a me nā laina wai kiʻekiʻe.
Hana ʻana e kūpono i kāu kālā:He mea maʻalahi loa ka hana ʻana me ka Papa B ma nā laina hana like ʻole. Inā ʻoe e ʻimi nei e mālama i nā kumukūʻai, ʻo ia ke kūlana maʻamau no ka paipu ERW. Inā makemake ʻoe i ka hilinaʻi kiʻekiʻe loa no nā wahi pilikia kiʻekiʻe, hana maikaʻi loa ia e like me Seamless T.ʻubesHoʻopilikia ia i kēlā "wahi momona" kakaikahi kahi ʻaʻole pono ʻoe e mōhai i ka ductility no ka ikaika.
Ma ʻō aku o ke Galvanizing: ʻenehana uhi holomua
Inā aia kāu papahana ma kahi kahakai me ka paʻakai kiʻekiʻe a i ʻole i hōʻike ʻia i nā kemika ʻino, ʻaʻole paha e hāʻawi ka galvanizing hot-dip maʻamau i ka pale lawa. ʻO ia kahi e hiki ai i nā uhi Zinc-Magnesium-Aluminum a Yuantai Derun ke hāʻawi i kahi hopena hilinaʻi. Hāʻawi kēia ʻenehana "Self-Healing" a hiki i ka 10 mau manawa o ke kūpaʻa ʻana i ka palaho o nā ʻano kuʻuna, e hōʻemi nui ana i kāu mau pōʻaiapuni mālama lōʻihi.
E kiʻi i kahi ʻōlelo hilinaʻi i kekona
Pono ʻoe i nā mea ʻoi aku ma mua o nā nui maʻamau?Pono ʻoe i ka mana R-angle pololei a i ʻole SHS/RHS lōʻihi maʻamau? Ua mākaukau kā mākou hui loea e kākoʻo iā ʻoe. Ma Yuantai Derun, ʻaʻole mākou e hoʻolako wale i nā paipu - hāʻawi mākou i nā hoʻonā kūkulu i kūkulu ʻia e mau loa.
| Mea (%) | Papa A ASTM A53 | Papa B o ASTM A53 |
|---|---|---|
| Kalapona (C) max | 0.25% | 0.30% |
| Manganese (Mn) | 0.95% | 1.20% |
| ʻO ka phosphorus (P) max | 0.05% | 0.05% |
| ʻO ka Sulfur (S) max | 0.045% | 0.045% |
| Waiwai Mīkini | Papa A | Papa B (Kiʻekiʻe) |
|---|---|---|
| Ikaika Hāʻawi (Min) | 205 MPa (30,000 psi) | 240 MPa (35,000 psi) |
| Ikaika Hoʻopaʻa (Min) | 330 MPa (48,000 psi) | 415 MPa (60,000 psi) |
| Noi | ʻO ka mea like maikaʻi loa | Kumu no ke Koho ʻana |
|---|---|---|
| Mahana Kiʻekiʻe | Papa B o ASTM A106 | ʻAʻohe humuhumu wale nō; ʻoi aku ka maikaʻi o ke kūpaʻa wela. |
| Lua Kūkulu | Papa ASTM A500 B/C | No nā ʻāpana i hana anu ʻia ʻo SHS/RHS. |
| Ka ʻino kiʻekiʻe | Paipu i uhi ʻia ʻo ZMA | Koho ʻē aʻe no nā wahi koʻikoʻi he Zinc-Magnesium-Alumini. |
Ka manawa hoʻouna: Mei-07-2026
