Uhi ʻo ASTM A 53 i ka paipu kila ʻole a welded me ka mānoanoa o ka paia.ʻO ka maʻamau o ka ʻili he ʻeleʻele a me ka paipu ASTM A53 (i kapa ʻia ʻo ASME SA53 paipu) i manaʻo ʻia no ka mīkini a me nā noi kaomi a ʻae ʻia hoʻi no ka hoʻohana maʻamau i ka mahu, ka wai, ke kinoea a me nā laina ea.He kūpono ia no ka wiliwili ʻana a me ka hana ʻana i nā hana e pili ana i ka wili, ka kuʻi, a me ka flanging. ʻO A53 seamless steel tube he mea ia o ka paipu kila maʻamau ʻAmelika.Hoʻokaʻawale ʻia ke kaʻina hana nui o A53 seamless steel tubes i ke kiʻi anu a me ka ʻōwili wela.ʻO ka ʻokoʻa nui ma waena o nā mea ʻelua, ʻo ke kaʻina hana o nā paipu kila liʻiliʻi i ʻōwili ʻia i ʻoi aku ka paʻakikī ma mua o ka ʻōwili wela, a ʻoi aku ka pōkole o ke ʻano o ke kila i ʻōwili ʻia ma mua o ka ʻōwili wela.ʻO nā paipu kila maʻemaʻe ʻole, ʻoi aku ka liʻiliʻi o ka mānoanoa o ka paia o ka paipu kalapona kila maʻemaʻe ma mua o nā paipu kila kila maʻemaʻe, akā ʻoi aku ka mālamalama o ka ʻili.ʻO ka ʻili o ka paipu kila kalapona i ʻōwili ʻia he ʻano ʻino.ʻO ke kaʻina hana nui a puni ka pahu blank→ hoʻomehana → hoʻopaʻa ʻia → ʻekolu-roll skew rolling, hoʻomau i ka ʻōwili ʻana a i ʻole extrusion → ka wehe ʻana o ka paipu → ka nui (a i ʻole ka hoʻemi ʻana o ke anawaena) → hoʻomaʻamaʻa → hoʻopololei → hoʻāʻo hydraulic (a i ʻole ka ʻike kīnā) → kaha → waihona hoʻokomo.
| ASTM A53/ASME SA53 | ʻAno S | ʻAno E | ʻAno F | |||
| (paʻaʻole) | (weled kū'ē i ka uila) | (puʻu-welded paipu) | ||||
| Papa A | Papa B | Papa A | Papa B | Papa A | ||
| ʻO ke kalapona max.% | 0.25 | 0.30* | 0.25 | 0.30* | 0.3 | |
| Manganese % | 0.95 | 1.2 | 0.95 | 1.2 | 1.2 | |
| Phosphorous, max.% | 0.05 | 0.05 | 0.05 | 0.05 | 0.05 | |
| Sulfur, max.% | 0.045 | 0.045 | 0.045 | 0.045 | 0.045 | |
| Ke keleawe, ka nui.% | 0.4 | 0.4 | 0.4 | 0.4 | 0.4 | |
| Nickel, max.% | 0.4 | 0.4 | 0.4 | 0.4 | 0.4 | |
| Chromium, max.% | 0.4 | 0.4 | 0.4 | 0.4 | 0.4 | |
| Molybdenum, max.% | 0.15 | 0.15 | 0.15 | 0.15 | 0.15 | |
| Vanadium, max.% | 0.08 | 0.08 | 0.08 | 0.08 | ||
| *No kēlā me kēia hōʻemi ma lalo o 0.01% ma lalo o ke kalapona kiʻekiʻe i ʻōlelo ʻia, e ʻae ʻia ka piʻi ʻana o 0.06% manganese ma luna o ka palena kiʻekiʻe a hiki i ka 1.65% (ʻaʻole pili i ka SA53). | ||||||
| Nā Koina Tensile | Seamless a me ka uila-kū'ē-welded | Hoʻomau-Welded | |
| Papa A | Papa B | ||
| ʻO ka ikaika o ka Tensile, min., psi | 48,000 | 60,000 | 45,000 |
| Ka ikaika o ka hua, min., psi | 30,000 | 35,000 | 25,000 |
1. ʻO ke kaʻina hana nui o ka paipu kila hoʻoheheʻe wela (ka hana nānā nui):
ʻO ka hoʻomākaukau ʻana a me ka nānā ʻana o ka tube blank → hoʻoheheʻe ʻia → ka ʻōwili ʻia → ka hoʻomaʻamaʻa ʻana i ke kila → hoʻopaʻa ʻia (hōʻemi ʻia) ke anawaena → ka mālama wela △→ hoʻopau ʻana i ka paipu hoʻopau → hoʻopau → nānā (non-destructive, physical and chemical, Taiwan inspection) → warehousing
2. ʻO ke kaʻina hana nui o nā paipu kila liʻiliʻi i ʻōwili ʻia (kau ʻia).
ʻO ka hoʻomākaukau ʻana i ka bila → pickling lubrication → ka ʻōwili anuanu (ke kaha kiʻi) → ka mālama wela → hoʻoponopono → hoʻopau → nānā.
