ʻO ka ʻokoʻa ma waena o ka hoʻoheheʻe ʻana i ka arc lua (dsaw) a me ka ʻokoʻa alapine kiʻekiʻe (hfw) e hōʻike nui ʻia i ka hiʻohiʻona o ka hiʻohiʻona weld, ʻo ka paipu kila lua i hoʻoheheʻe ʻia i ka hiʻohiʻona me kahi kāʻei indentation liʻiliʻi, ka mea nui i loko o ke kila.ʻOi aku ka kiʻekiʻe o ka paipu weld arc i hoʻopaʻa ʻia ma mua o ka mea kumu no ka weld 1-3mm maʻemaʻe.I ka helehelena alapine kila paipu pahee, non-oxide adhesion.I ka weld, kiʻekiʻe-frequency pololei seam kila paipu weld kiʻekiʻe ana e squeeze kahe kū'ē, ka jagged serrate irregular weld, keia weld "scratch" ma mua o ko lakou hele 'ana i waho, e waiho ana i ka palahalaha weld wehe o ka trace.

Eia kekahi, ʻike ʻia ka welding arc submerged ʻelua a me ka ʻokoʻa kiʻekiʻe i ke kaʻina hana, ka hoʻohana ʻana i nā mea maka like ʻole, nā kaʻina hana hoʻoheheʻe ʻokoʻa, ʻokoʻa ke kaʻina hana wili mai nā ʻāpana hana like ʻole, ka hana ʻana o nā ʻano like ʻole.ʻO ka ʻaoʻao submerged arc wili pololei seam kila hana kaʻina hana wale nō me JCOE hoʻoheheʻe kaʻina hoʻoheheʻe kaʻina hana paʻakikī, e hana ana i ka maikaʻi e pili ana i ka paipu wili haʻahaʻa haʻahaʻa, no laila ʻoi aku ka kiʻekiʻe o ke kumukūʻai hana ma mua o ke kiʻekiʻe-frequency straight seam welded steel pipe.kiʻekiʻe-frequency pololei humuhumu kila paipu (ERW) maʻalahi ke kaʻina hana, hoʻokahi kikoʻī.ʻElua ʻaoʻao submerged arc pololei seam kila paipu hoʻokumu ʻia ke kaʻina hana JCOE anu, nā hiʻohiʻona e hana i ke kila ma 50mm me ka lohi, J, C, O, E hōʻike i ke kiʻi o ke kaʻina hana hoʻoheheʻe ʻia.ʻO ka hana pinepine ʻana i ke kaʻina hana no nā ʻōwili multi-pass, ʻomi i nā ʻaoʻao ʻelua o ke kaula, a hoʻopaʻa hope i ke kaʻina hana anu, ʻike ʻia ke kaʻina hana me ka hoʻomau ʻole ʻana.Submerged arc kuʻihao kaʻina ua ikeia ma ka hoʻohana 'ana i ke kila uwea uila hopena a hehee pu, e like me filler kuʻihao.ʻO ke alapine o ka hoʻoheheʻe ʻia ʻana o ke kaʻina hana kuʻi ʻana o ka ʻili i kēia manawa e hoʻopau ʻia i ka wā pōkole ma lalo o ke ʻano o ka hoʻoheheʻe ʻana o waho.ʻO ke alapine pololei paipu hana ʻāpana no nā laina like ʻole o ka hana pono ʻole o ka laina hana, a me ka hoʻoheheʻe ʻia ʻana o ke arc wili pololei a hiki i 15 mau kaʻina hana intermittent piha.ʻO ka pinepine ʻana o nā kikoʻī o ka hana ʻana i nā kikoʻī hana ʻoi aku ka liʻiliʻi.