Hpa majaw nga yang, n-gun n rawng ai n-gun n-gun hpe n-gun n-gun n-rawng ai n-gang) hpe n-gun n-rawng ai pipe ngu nna mung shamying ma ai, dai hpe welding galaw ngut ai hpang coil galaw ngut ai hpang n-gang plate (sh) steel strip hte galaw da ai. Hpun n-gun hpe ninghkap lu ai pipe galaw ai lam gaw asan sha, galaw shapraw ai atsam kaba ai, amyu myu hte hkrang shapraw ai lam ni, arung arai ni n law ai, raitim, n-gun yawng gaw n-gun n rawng ai steel pipe hta n-gun n law ai. 1930 ning kaw nna, n-gun ja ai strip steel matut manoi galaw shapraw ai lam hte welding hte jep joi ai hpaji ni rawt jat wa ai hte maren, weld quality hpe matut manoi rawt jat wa ai, n-gun n rawng ai pipe ni a amyu myu hte hkrang masa ni gaw grau grau jat wa ai, n-gun n rawng ai steel pipe ni hpe grau grau nna shara ni hta galai shai wa sai. Laknak n-gun n-gun n-rawng ai pipe ni hpe, n-gang n-gang ni hte spiral welded pipe ni hku nna, weld joint ni a hkrang hte maren, garan tawn da ai.
Pasate hpe ninghkap lu ai Pipe
Shinggan na layer gaw, n-gun n rawng ai n-gang pipe (sh) dingyang n-gang hte n-gang n-gang n-gang rai nga ai, kata na bunghku gaw, n-gun n-rawng ai ceramic lining plate rai nga ai, AL2O3 gaw, n-gun n-gun n-gun n-gun n-gun n-gun n-gun n-gun n-gun n-gun n-gun n-gun n-gun n-gun n-gun n-gun n-gun n-gun n-gun n-gun n-gun n-gun n-gun hpe n-gun n-gun n-gun n-gun n-gun n-gun n-gun n-gun n-gun n-gun n-gun n-gun n-gun n-gun n-gun n-gun n-gun n-gun n-gun n-gun n-gun n-rawng ai. arung arai ni hpe. Shinggan bunghku gaw 6 – 12 mm galu nna, kata na bunghku gaw 6 –16 mm hpang hkrat ai. Tube diameter hku nna n pat shingdang ai.
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