Steel pipe ni gaw, dai ni na aten na hpaga lam hte gawgap ai lam hta n mai malap ai npawt nhpang arung arai langai hku nna, amyu myu hku nna pru wa nna, jai lang ai lam amyu myu hta jai lang nga ai. Basic steel pipe garan ginhka ai lam gaw madung hku nna arung arai, galaw shapraw ai lam, npawt nhpang hkrang, jai lang ai lam ni hpe madung tawn ai. Steel pipe amyu myu gaw bungli galaw ai lam, manu jahpu, jai lang mai ai masa ni hta grai shai hkat ai lam ni hpe madun dan ai. Lahta na lam ni gaw, npawt nhpang n-gang pipe ni a madung garan ginhka ai ladat ni hte arawn alai ni hpe, ningmu amyu myu hku nna, hkrang shapraw ai.
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Basic steel pipe ni hpe garan ginhka ai hta npawt nhpang dik htum ai masat masa gaw, carbon steel gaw kaba dik htum hpe hkam la lu ai, dai hpang alloy steel hte stainless steel ni lawm ai.
Carbon Steel Pipes: Primarily composed of iron and carbon, with a carbon content typically below 2%, are categorized by carbon content into low-carbon steel (≤0.25%), medium-carbon steel (0.25%-0.6%), and high-carbon steel (>0.6%). Low{{2}carbon steel pipe ni gaw grai kaja ai ngang kang ai hte galaw shapraw na matu loi ai, n-gun n law ai-} pressure ntsin htaw sa ai lam (hka hte gas pipe ni zawn re ai) hta grai lang ai. Medium- hte tsaw ai-carbon n-gang ni gaw n-gun grau ja ai hte, hpang de n-gun grau ja ai jak rung ni (sh) post{7}}hkum hpe katsi ai tsi lajang ra ai lam ni a matu htuk manu ai. Alloy steel pipes: Chromium, nickel, hte molybden zawn re ai alloying elements ni hpe carbon steel (yawng 5% hta jan ai) hpe jat bang nna, n-gun n-gun hpe jat ya ai,{10}} aten ladaw n-gun kaba ai, shing nrai, n-gun n-gun hpe galai shai ai hku nna ninghkap ai lam hpe jai lang ai. Ga shadawn, chromium-molybdenum alloy pipe ni gaw nbung laru kaba hte n-gun ni hpe ninghkap lu ai rai nna, boiler ni hte sau htu ai arung arai ni hta law law lang lang ai; nickel-dai hta nga ai alloy steel pipe ni hpe n-gun ja ai tsi mawan ni hta lang ai.
Stainless steel pipe ni: 10.5% (sh) dai hta jan ai chromium hpe bang da ai (nkau mi mung nickel lawm ai), shanhte gaw n-gun ja ai oxide film hpe hpaw nna, n-gun n rawng ai hpe ninghkap lu ai. Shanhte a metallographic hkrang hpe madung tawn nna, shanhte hpe austentic (304 hte 316 stainless steel zawn re ai), hka li (430 stainless steel zawn re ai), hte martensitic (sattenstic (410 stainless steel zawn re ai) ngu masat da ai. Austentic stainless steel gaw non{7}}} hpe n-gun n jaw ai hte acid- hpe n-gun n jaw ai majaw, malu masha galaw shapraw ai hte tsi mawan ni a matu htuk manu ai. Ferritic stainless steel gaw n law ai- cost rai tim, n kaja ai lam ni nga ai rai nna, nta gawgap ai lam hpe mawn sumli ai hta lang chye ai. Martenstic stainless steel gaw grai n-gun ja ai hte n-gun ja ai arung arai ni hte bearing arung arai ni a matu htuk manu ai.
2. Production Process hku nna garan ginhka ai lam: Seamless hte welded Steel Pipes ni
Ndai galaw shapraw ai lam gaw, n-gang pipe ni a hkrang masa hpe n-gun jaw ai lam hte bungli galaw ai lam hpe chye na lu na matu ahkyak ai lam langai rai nga ai. Steel pipe ni hpe madung hku nna n-gun n rawng ai hte n-gun n rawng ai ngu masat da ai.
Seamless steel pipe: ngang kang ai steel billet hpe n-gun n rawng ai hka htung langai mi de shang wa ai lam (hot rolling or cold draw) hku nna galaw ai majaw, n-gun kaba hte n-gun ja ai n-gun-bearing atsam hpe lu la ai. Hot{2}}roll n-gun n rawng ai n-gang pipe gaw, n-gun law law hpe jaw ya ai (630mm du hkra shinggan diameter ni) rai nna, n-gun kaba ai-}}}}pressure hka hpe htaw sa na matu (ga shadawn, sau htu ai hte hydraulic struts zawn re ai). Cold-drawn n-gun n rawng ai n-gang pipe gaw, n-gun ja ai hte n-gun ja ai n-gun hpe jaw ya ai majaw, hkrak ai jak (sh) hka htung ni hta lang ai.
Welded steel pipe: n-gang n-gang (sh) strip kaw na galaw ai, galu kaba ai n-gang n-gang (ERW), spiral seam welding (SSAW), shing nrai, tsaw dik htum- n-gun kaba ai n-gun hpe ninghkap ai lam (HFW) hku nna galaw ai rai nna, n-gang langai (sh) law law hpe madun da ai. Longitudinal seam welded steel pipe (galvanized steel pipe zawn re ai ni gaw, n-gun n law ai n-gun n-gun n-gun n-gun hpe htaw sa ai lam a matu n-gun n-gun n-gun n-gun n-gun n-gun n-gun n-rawng ai hte hka lim ai lam hta grai law hkra jai lang ai, n-gun n law ai-} pressure gas ni hpe mung law law lang lang ai. Spiral seam welded steel pipe gaw bunghku n-gun langai sha nga ai rai nna, diameter kaba ni a matu htuk manu ai (3m du hkra), sau hte n-gun n-gun pipeline ni hta law law lang lang ai. High{7}} n-gun n-gun hpe ninghkap lu ai n-gun hpe n-gun dat n-gun n rawng ai sha, n-gun kaba ai n-gun ni hpe lang ai majaw, mawdaw a daw ni hte nta arung arai ni hta lang ai.
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Cross-} daw hkrang hkrang hpe madung tawn nna, madung n-gang pipe ni hpe htunghking geometric hkrang ni hte htung tara-} galaw da ai hkrang ni hku garan mai ai.
Round Tubes: 80% jan jahpan bang ai, ndai gaw n-gang pipe amyu rai nga ai. Dai circular cross{2}} daw gaw, langai sha re ai myit ru myit tsang lam ni hpe garan gachyan ai lam, grau kaja ai compression hte bending resistance, hte galaw ai lam hpe loi ai hku galaw ya ai (bens hte welding zawn re ai). Dai hpe hka hte htaw sa ai lam (hka hte sau hka htung ni), jak rung ni (scaffolding, mawdaw gau ai shafts), hte nta hpe madi shadaw ai lam (curtain wall keels) ni hta grai lang ai.
Square hte Rectangular Tubes: Katsi ai hpe shinggrup ai (sh) hkrak hkrak shinggrup ai hku nna hpaw da ai, shanhte hta square (sh) rectangular cross{0}} daw ni nga ai. Square tubes ni gaw, n-gun ja ai shingjawng ai lam hpe ninghkap lu ai hte shara n-gun ja ai lam lahkawng yan hpe jaw ya nna, shelving hte madun dan ai hta lang ai. Rectangular tubes ni gaw, shanhte a galu kaba ai lam n bung ai majaw, laksan jung ra ai lam ni hpe hkan sa mai ai (chyinghka hte window frame ni hte arung arai ni hpe nta ni zawn re ai), nta gawgap ai lam hpe mawn sumli ai hte n-gun n law ai n-gang ni hpe n-gun n law ai n-gun n-gun ni hta grai lang mai ai.
Special-Shaped Tubes: Ndai ni hta, elliptical, triangular, hte hexagonal tubes zawn re ai laksan hkrang ni lawm ai, dai ni hta, arung arai ni a lapran (sh) bungli galaw ra ai lam ni hpe hkan sa na matu, law law lang gram lajang da ai. Ga shadawn, hexagonal steel pipe ni hpe wrenches zawn re ai tool handle ni hta lang nna, grip friction hpe grau kaja hkra galaw ai; plum blossom{{2}shaped steel pipe ni hpe mawn sumli ai sin langa ni hta lang nna, aesthetics hpe grau kaja hkra galaw ai.
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Hpang jahtum-use mabyin masa hpe madung tawn nna, madung n-gang pipe ni hpe function-}oriented category ni hku nna grau nna garan mai ai.
Structural steel pipe ni: Kalang lang lang lang ai lit ni hpe gun hpai ai, shanhte gaw jak rung atsam ni hpe ahkyak shatai nna (tsiile n-gun hte hkai lu hkai sha ai shara zawn re ai) hpe ahkyak shatai tsun ai. Ga shadawn, gawgap na matu Q235B steel pipe ni hpe scaffolding hte bridge madi shadaw ai lam ni hta lang ai; 20# steel pipe ni hpe jak rung galaw shapraw na matu hte gearbox nta ni hte dung shara ni hta lang ai.
Fluid htaw sa ai n-gang pipe ni: Core ra ai lam ni hta, n-gun n-gun hpe ninghkap lu ai atsam hte kata na bunghku n-gun hpe shayawm ya lu ai. Ndai pipe ni hpe hka hte wan n-ga (galvanized steel pipe zawn re ai), sau hte gas pipe ni (API 5L madang line pipe zawn re ai), hte chemical pipe ni ( acid{{2} hpe ninghkap lu ai n-gun n rawng ai pipe ni zawn re ai) ni hku nna garan ginhka da ai. Low-} pressure ntsin pipe ni hpe anti-corrosion tsi lajang ai lam law law lang galaw ai (plastic coating, galvanizing), n-gun n rawng ai lam n nga ai hpe kam na matu, n-gun n rawng ai lam hpe sawk sagawn ra ai. Machined steel pipe ni: A daw mi hku nna, shanhte gaw dimensional hkrak ai lam hte ntsa lam a hkamja lam hpe hkan sa ra ai. Ga shadawn, katsi ai-}dwn a hkrak ai n-gang pipe ni hpe hydraulic valve hkum hkrang ni hte mawdaw shock absorbers ni hta lang ai; alloy structural steel pipe ni hpe nbungli engine bracket ni hta lang nna, hkrak ai jak a arung arai ni hpe lam madun ai lam ni hta lang ai.
Special-purpose steel pipe ni: Grai sawng ai makau grup yin ni a matu galaw da ai, Nuclear wan jak ni a matu zirconium alloy steel pipe ni (high- a n-gun n-gun n-gun hpe ninghkap lu ai atsam), super duplex stainless steel pipe ni hpe panglai hkin-gau ntsa na npawt nhpang ni a matu (seawater n-gun shayawm ai lam hpe ninghkap lu ai), hte titanium alloy thin{2}} hpe aerospace application ni a matu (lightweight and high and high 2 laksan n-gun atsam).
Daw dan lam
Madung steel pipe garan ginhka ai ladat gaw, arung arai hpaji masa, galaw shapraw ai lam, engineering ra kadawn ai lam ni hpe sung sung hkai dan ai lam hpe madun dan ai. Carbon steel kaw nna stainless steel du hkra, n-gun n rawng ai kaw nna welded du hkra, grup yin kaw nna hkrang bung ai pipe ni du hkra, amyu shagu gaw, laksan jai lang ai lam ni a matu bungli galaw ai lam hpe grau kaja hkra galaw ya ai. Ndai garan ginhka ai lam ni hpe chye na ai gaw, engineering arung arai ni hpe lata la ai lam hpe hkrak hkrak ra kadawn ai lam ni hte hkrak hkrak shadawn lu na matu karum ya ai sha n-ga, n-gang pipe hpaga lam hpe laksan galaw shapraw na matu hpaji masa npawt nhpang hpe mung jaw ya nga ai. Arung arai nnan ni (composite-coated steel pipe ni zawn re ai) hte galaw shapraw ai hpaji masa ni (3D{5}}printed micro{6}}steel pipe ni zawn re ai ni) ni rawt jat wa ai hte rau, n-gang pipe ni a garan ginhka ai lam hte jai lang ai lam ni gaw htawm hpang de matut nna jat wa na re.
