Duplex steel S31803 tubes bụ otu n'ime alloys kachasị ewu ewu na nke a na-ejikarị n'ụwa. A ma ha ama maka ike ha dị elu, ịdịte aka na nguzogide corrosion ha. Duplex steel S31803 bụ igwe anaghị agba nchara duplex nwere 25% chromium na 7% nickel. Ọ nwere ike dị elu na nha nha yana ọmarịcha nguzogide corrosion ma e jiri ya tụnyere austenitic igwe anaghị agba nchara dị ka 304L na 316L. Duplex Steel S31803 Tube nwere ezigbo nguzogide pitting n'ihi obere carbon ọdịnaya, nke na-enyere aka igbochi pitting corrosion.

Tubes dị n'ụdị abụọ, enweghị nkebi na welded. A na-eme tubes na-enweghị ntụpọ na-enweghị ịgbado ọkụ, ebe tubes welded nwere weld n'ogologo ogologo tube ahụ. Ụdị abụọ ahụ nwere uru dabere na ngwa ngwa gị chọrọ, Otú ọ dị, a na-eji tubes na-enweghị ntụpọ na-ejikarị n'ihi ike ha dị elu na oke ibu na ike iguzogide okpomọkụ dị elu karịa tubes welded.