Pipe matut mahkai ai lam hte pat da ai lam hpe gara hku grau kam mai hkra galaw na

Commissioning delay law malawng gaw, pipe dingyang hkawm ai kaw na n re. Dai ni gaw interface-yak hkak ai fit-up, bai kahtap nna weld gram lajang ai, bolt-hole n hkrak ai, hydrotest leaks, n line up ai hkap la ai laika ni kaw na pru wa ai. Kam mai ai pipe matut mahkai lam hte pat da ai lam a mahtai gaw, npawt nhpang lahkawng hta madung nga ai: hkang lu ai joint geometry hte bai kahtap nna pat da ai lit.

1. Welding matut mahkai lam ni-hpa gaw teng sha ngang grin ai lam hpe shabyin ya ai kun?

Stable welded joint gaw, jahtum hkyen lajang ai lam, fit-up, welding galaw ai lam, jep joi ai lam ni hta n bung ai lam kaw na pru wa ai. Hkai sun hta, geometry galai shai ai lam hte heat-input galai shai ai lam ni gaw amplify byin wa ai.

• Hkyen lajang ai lam hpe jahtum tawn ai

Bevel angle, lamu ga, shing nrai, jahtum-myit nsam n bung yang, npawt hpaw ai shara gaw hprawng mat nna, weld window gaw shinggrup mat ai. Masha law malawng lang ai kumla langai gaw, line langai sha hta n bung ai pass rate ni re.

• Fit-up hte hkrang shapraw ai lam hpe hkang ai

Rung hpaw ai lam, kata n htap htuk ai lam, ovality/concentricity ni gaw ru jung ai lam hte NDE mahtai ni hpe hkrak hkra machyi shangun ai. Thin-bunghku, kaji ai OD, hte kadun ai-piece assembly ni gaw grau hkam sha chye ai.

• Katsi ai-shang ai hkuwawt gaw arung arai hte n-gun hte bung ai

Grai n law ai gaw fusion/penetration n nga ai hpe jat shangun ai; grai tsaw ai gaw n kaja ai lam hpe jat shangun nna flange-myi man masa hpe hkra machyi shangun chye ai.

• Jep joi ai lam hte gram lajang ai lam

Joint ni gaw madi shadaw ai, bunghku, valve, shing nrai, arung arai ni a makau e shinggrup nga ai rai yang, NDE hte gram lajang ai lam gaw schedule risk a tengman ai driver byin wa chye ai.

Weld galaw da ai matut mahkai lam hpe flange langai mi hte gyit da ai shaloi, welding n kaja ai lam gaw, weld-quality manghkang kaw nna, n bung ai gasket hpe shinggrup ai majaw byin pru wa ai sealing manghkang-localized leakage de manghkang hpe galai shai kau ya lu ai.

2. Socket/fillet welding-hpa majaw hpawng de ai tara ni gaw hkrang nsam hta grau ahkyak ai

Socket-style joint ni gaw myi hte yu yang grai kaja ai zawn rai nga ai, raitim ngang grin ai lam gaw bai kahtap nna shinggyin la lu ai lailen hta grai madung nga ai.

• N galai shai ai bang ai sung ai hte lahpa gap ai
• Grau nna, n-gun n rawng ai shara ni hta, bai galaw mai ai fillet weld geometry
• Cycle jawn ai hte katsi ai magam bungli npu hta n-gun yawm ai hpe grau hkam sha lu ai
• Crevice-area san seng ai lam hte n-gun n rawng ai akyang lailen hpe daw jau ai grup yin hte maren galaw ai

3. Threaded matut mahkai lam-kam mai ai lam gaw zuphpawng tara langai mi re .

Threaded joint ni gaw shanhte a hpang e nga ai hpawng chyawm ai madang daram sha ngang grin nga ai.

• Tengman ai thread hkrang hte htuk manu ai hku shanglawm ai lam
• Thread ntsa kaw hkra machyi ai lam hpe hkang lu ai
• Sealant amyu hte jai lang ai ladat hpe n galai shai ai
• Lachyum shaleng da ai ngang kang ai lam hte bai- jep joi ai lam
• Hkrun lam hte nbung laru shingjawng ai npu hta anti-htum mat ai myit masa hpe asan sha mu lu na

Flange joint ni gaw, hpawng chyawm ai atsam hpe, pat da ai mahtai ni de hkrak sha ga gale ya ai. Stable sealing galaw na matu, lam masum hpe rau jawm hkang ra ai: flange myi man masa, gasket bungli galaw ai window, hte bai nhtang galaw mai ai bolt preload.

1. Flange myi man masa

• Flatness/waviness gaw n-gun hpe maren sha shabyin ya ai
• Ntsa lam ngut kre ai gaw gasket htum ai hte bai hkam kaja wa ai hpe hkra machyi shangun ai
• Nicks, dents, hte corrosion ni gaw hka lim ai lam ni byin wa ai
• Welding n kaja ai lam gaw buga ginra hta grau/npu - hpe shinggrup ai lam byin shangun lu ai

Laksan hku nna, hka lim ai lam gaw maga mi de (sh) bolt nkau mi grup yin hta hka lim ai lam rai nna, grup yin ting grup yin hta hka lim ai lam n nga ai.

2. Gasket bungli galaw ai hkuwawt

• -npu kaw na shinggrup ai majaw, aten garai n du yang hka pru wa ai
• Over-compression gaw gasket hpe n-gun yawm shangun nna, bai hkam kaja wa ai lam hpe shayawm kau ya ai, thermal cycle ngut ai hpang grau sawng wa chye ai
• Hkringhtawng hte media gaw, aten ladaw hta akyu rawng ai gasket stress hpe shayawm ya nna, n-gun shayawm ya ai.

Gasket hpe upgrade galaw ai sha, myi man masa (sh) preload consistency gaw teng sha pat shingdang ai lam rai yang, manu n law ai.

3. Bolt hpe shawng n-gun jaw ai lam

• N bung ai n-gun ja ai lam ni gaw n bung ai gasket n-gun hpe shabyin ya ai.
• -grai n-gun dat ai gaw myi man hpe n-gun shayawm ya nna, n-gun shayawm ya lu ai
• Sau hte shingjawng ai lam shai hkat ai majaw, torque-to-preload n bung ai
• Thermal cycle hte vibration gaw preload hpe shayawm ya nna, law law lang -asak a shawng na hka lim ai lam ni hpe byin shangun ai

Step 1: Flange myi man hpe shawng jep yu u .

• Mu lu ai hkra machyi ai lam: n-gun n rawng ai, n-gun n rawng ai, n-gun n rawng ai shara ni
• N bung ai hku hkra ai (sh) n kaja ai kumla ni, grau nna welding galaw ngut ai hpang
• Local myi man manghkang ni hte matut mahkai ai leak shara hkrang ni

Lahkam 2: Gasket htap htuk ai lam hte n-gun shayawm ai akyang lailen hpe jep yu u

• Media/katsi ai/san seng ai masa hte htap htuk ai
• N bung ai hkrang sumla, shara mi kaw hkrat sum ai, shing nrai n kaja ai hkrang nsam
• "Grau ngang kang hkra galaw tim, naw hka pru nga ai" ngu ai hkrang ni gaw n bung ai n-gun (sh) n ngang grin ai preload hpe madun ai

Lahkam 3: Preload bai galaw mai ai lam hpe kam u

• N galai shai ai sha n-gun ja ai ladat hte daw hte daw n-gun ja ai
• N galai shai ai sau bang ai hte shingjawng ai masa
• Hka lum ai hte katsi ai npu hta preload sum mat na hkrit tsang hpa ni hpe chye na ai lam

• Hpang jahtum hkyen lajang ai lam gaw welding galaw ai ladat hte n htap htuk ai → geometry drift → gram lajang ai lam law wa ai
• Fit-up/alignment hpe n hkang lu ai → kata n htap htuk ai hte n grin ai root → NDE ​​hkrat sum ai lam ni
• Spool hkam sharang ai n-gun - ntsa de → bolt - hka htung n hkrak ai → atik anang jung ai myit ru myit tsang lam
• Welding n kaja ai lam gaw flange myi man hpe hkra machyi shangun ai → n bung ai gasket n-gun → shara shagu na hka chyam dinglik ai lam hta hka pru ai
• Tightening practice gaw crew → preload bra ayai ai → shawng -asak hka pru ai hku nna shai hkat ai

Kalang lang byin ai chain reaction langai gaw, hka htung ni hpe line up galaw na matu atik anang alignment galaw ai → n bung ai gasket hpe shinggrup ai → chyam dinglik ai shaloi hka pru ai → grau n-gun ja ai → myi man nsam galai ai → bai hka pru ai.

Pipe matut mahkai ai lam hte pat da ai lam hpe hkap la na matu, bai maram yu ai ni gaw, hkan tam mai ai, shadawn mai ai, jep chyoi mai ai arung arai ni hpe tam chye ma ai:

• Hkamja lam hte seng nna: heat/batch hpe chye ginhka ai lam hte masat masa ni
• Hkrunlam-ahkyak ai geometry: jahtum masa, hkrang shapraw ai lam, flange-myi man masa, bolt-hka htung hkrang shapraw ai lam
• Project langai hta ra ai jep joi ai lam hte chyam dinglik ai jahpan ni
• Laika buk pack hpe interface jahpan de matut manoi map galaw da ai

Octal Pipe masing hta, daw ni hte laika ni hpe langai sha re ai interface list hpe ninghkap nna hpaw tawn da ai majaw, matut mahkai ai lam a logic, sealing ladat, hkap la ai lam ni hpe hkan sa nna, jep joi na matu loi ai.

Masat masa ni

 

CE masat laika

ISO 9001 masat laika

API Q1 masat laika

ABS masat laika

AP-5L masat laika

API-5CT masat laika