Hana ʻia ka paipu ʻole me nā poloka kila ikaika me ka ʻole o nā welds. Hiki i nā welds ke hōʻike i nā wahi nāwaliwali (hiki i ka corrosion, corrosion a me ka pōʻino nui).

Ke hoʻohālikelike ʻia me nā paipu welded, ʻoi aku ka wānana a me ka pololei o ke ʻano o nā paipu seamless ma ke ʻano o ka poepoe a me ka ovality.

ʻO ka hemahema nui o nā paipu liʻiliʻi ʻo ia ke kiʻekiʻe o ke kumukūʻai o ka ton ma mua o nā paipu ERW o ka nui like a me ka papa.

ʻOi aku paha ka lōʻihi o ka manawa alakaʻi no ka mea ʻoi aku ka liʻiliʻi o nā mea hana o nā paipu wili ʻole ma mua o nā paipu welded (hoʻohālikelike ʻia me nā paipu seamless, ʻoi aku ka haʻahaʻa o ka pale komo no nā paipu welded).

ʻAʻole like paha ka mānoanoa o ka pā o ka paipu liʻiliʻi ma luna o kona lōʻihi holoʻokoʻa, ʻoiai ʻo ka nui o ka hoʻomanawanui he +/- 12.5%.