Mpweya wabwino wa carbon structural steel wotentha-wotsika-pressure boiler chubu umagwiritsidwa ntchito popanga machubu osiyanasiyana otsika komanso apakatikati, mapaipi amadzi otentha kwambiri, mipope yamadzi ndi machubu otentha kwambiri, chitoliro cha opium, chitoliro chaching'ono ndi machubu a njerwa ndi ma Stubbs ozizira ( kuzunguliridwa) ...
Werengani zambiri