ʻO ke kūlana A106 e pili ana i kaASTM A106/A106Mkūlana, ʻo ia hoʻi kahi kūlana huahana no nā paipu kila kalapona seamless i hoʻopuka ʻia e ka American Society for Testing and Materials (ASTM International). Kuhikuhi kēia kūlana i nā koi no ka hoʻohana ʻana i nā paipu kila kalapona seamless ma lalo o ke kūlana wela kiʻekiʻe a me ke kaomi kiʻekiʻe.
Pili ke kūlana A106 i nā wahi lawelawe wela kiʻekiʻe ma nā ʻoihana laulā, e like me ka hoʻomaʻemaʻe ʻaila, ka ʻoihana kemika, nā kikowaena mana, nā paila, nā ʻōnaehana paipu hoʻomehana a me ke kaomi kiʻekiʻe a me nā kahua ʻē aʻe. Uhi ia i kekahi mau papa o ka paipu kila kalapona, me nā papa A, B, a me C.
Wahi a ke kūlana A106, pono i nā paipu kila kalapona seamless ke loaʻa i kekahi mau ʻano kemika a me nā waiwai mechanical. ʻO nā koi ʻano kemika e pili ana i ka nui o ke kalapona, ka nui o ka manganese, ka nui o ka phosphorus, ka nui o ka sulfur a me ka nui o ke keleawe. ʻO nā koi waiwai mechanical e pili ana i ka ikaika tensile, ka ikaika yield, a me ka elongation, a me nā mea ʻē aʻe. Eia kekahi, ua kuhikuhi ʻia ka nui, ke kaumaha a me nā ʻokoʻa i ʻae ʻia o nā paipu.
Pono ke kūlana A106 e hiki i nā paipu kila kalapona humuhumu ke kū i ke kaumaha ma lalo o ke kūlana wela a me ke kaomi kiʻekiʻe, a loaʻa iā ia ke kūpaʻa maikaʻi loa i ka palaho a me ke kūpaʻa i ka haki hydrogen. ʻO kāna hana hana e komo pū me ke kahakiʻi anu, ka ʻōwili anu, ka ʻōwili wela a i ʻole ka hoʻonui wela, a pēlā aku, e hōʻoia i ka laumania o nā ʻili o loko a me waho o ka paipu a ʻaʻohe hemahema.
Wahi a nā ʻōlelo o ke kūlana A106, pono e hana ʻia nā paipu kila kalapona seamless i kahi ʻano o nā nānā a me nā hoʻokolohua e like me ka loiloi kemika, ka hoʻāʻo ʻana i ka hana mechanical, ka nānā ʻana i ka ʻike maka, ke ana ʻana o ka mānoanoa o ka paia, ka hoʻāʻo ʻana i ke kaomi a me ka nānā ʻole ʻana e hōʻoia i ko lākou kūlana e hoʻokō i nā koi maʻamau.
I ka hopena, ʻo ke kūlana A106 kahi kūlana huahana paipu kila kalapona seamless koʻikoʻi, e wehewehe ana i ka haku mele kemika, nā waiwai mechanical a me nā koi hana hana o nā paipu kila kalapona, a me nā koi kaohi maikaʻi a me ka nānā ʻana. Hiki i ka mālama ʻana i kēia kūlana ke hōʻoia i ka hoʻohana pono ʻana o nā paipu kila kalapona seamless i nā wahi mahana kiʻekiʻe a me ke kaomi kiʻekiʻe.
ʻO ka huahana i kūʻai ʻia e ka mea kūʻai aku i kēia manawa he paipu kila kalapona humuhumu ʻole ASTM A106 GR.C. E ʻae mai iaʻu e hōʻike iā ʻoe i nā kikoʻī kikoʻī o ke ana ʻana a me ka kaohi maikaʻi o ka huahana holoʻokoʻa.