ʻO ka paipu hili ʻole i hana ʻia me kahi ʻāpana metala me ka ʻole o ka ʻili ma ka ʻili, ua kapa ʻia he paipu kila ʻole.E like me ke ʻano hana, ua māhele ʻia ka paipu seamless i loko o ka paipu wela, ka paipu anu, ka paipu huki anu, ka paipu extruded, ka paipu luna, a me nā mea like.Wahi a ke ʻano o ka ʻāpana, ua hoʻokaʻawale ʻia ka paipu kila ʻole i ʻelua mau ʻano: kahi ʻano pōʻai a me kahi ʻano like ʻole, a ʻo ka paipu i hoʻohālikelike ʻia he ʻano huinahā, kahi ʻano elliptical a me nā mea like.ʻO 650mm ka palena kiʻekiʻe a ʻo ka palena iki he 0.3mm.Hoʻohana nui ʻia ka paipu kila seamless e like me ka petroleum geological drilling pipe, crack pipe for petrochemical industry, boiler pipe, bearing pipe and high-precision structural steel pipe for automobile, tractor and aviation.