O le Tianjin Yuantai Derun Steel Pipe Manufacturing Group Co., Ltd. e iai ana oloa tumau e 200,000 tone. E mafai e mamanu o loʻo iai nei ona gaosia toetoe lava 6,000 faʻataʻitaʻiga o paipa faatafafā ma faatafafā. E mafai ona faʻapitoa le faʻapipiʻiina saʻo o le uelo maualuga, faʻapipiʻiina o le arc i lalo i itu e lua, paipa faatafafā ma faatafafā e leai ni faʻasologa ma faʻapitoa, paipa faatafafā ma faatafafā tulimanu taumatau (tulimanu maʻai), paipa lapotopoto fausaga, paipa faʻapitoa e tele itu e piʻo malulu, ma paipa JCOE1420 arc i lalo i itu e lua.
O le tele o le vaega pito i luga o le paipa faatafafā ma le faatafafā e mafai ona 1000 * 1000, o le mafiafia pito i luga e mafai ona oʻo atu i le 50mm, ma o le umi e tasi e 4-24 mita.
Fa'atino le fa'apipi'iina i fafo i le auala vevela (hot-dip), fa'apipi'i i le agi, ma le fa'apipi'i tautau (rī).
Piki oloa ona faatino lea o pisinisi gaosi uʻamea vevela i lenei matata e fiafia ai i faiga faʻavae faʻapitoa faaopoopo!
E mafai ona teuina le vaega o le zinc i le 20-100 microns!
Taimi na lafoina ai: Ape-14-2025
