Ayinamthungo: igqojoziwe, izotywe ngokutsha, yafakwa (inkqubo yokujikeleziswa kweepasi ezininzi)
I-Welded: i-welded ngobude, izotywe ngokutsha, i-annealed (inkqubo yokujikeleziswa kweepasi ezininzi)
Ukupakisha: Iityhubhu linxeba elikwinqanaba elibhijelwe kwintsimbi / igubu leplanga okanye kwispools.
Onke amagubu okanye iispools zipakishwe kwiikreyiti zomthi ukuze zisebenze lula.