PE pipe (polyethylene pipe) hi tui supply, gas transmission, leh agricultural irrigation-ah te hman a ni nasa hle a, hei hi a corrosion resistance tha tak, a flexibility leh a dam rei avangin a ni. A sak quality hian piping system-a hun rei tak chhunga stable taka hnathawh a nghawng nghal vek a, chuvangin scientific construction method leh technical specification zawm tlat a pawimawh hle. He thuziak hian PE pipe siam dan tur, key technology, leh fimkhur dan tur chipchiar takin a tarlang dawn a ni.
I. In sak dan tur buatsaih dan .
1. Thil enfiah .
PE pipe leh fittings te hian ram pum emaw industry emaw standard (GB/T 13663 ang chi) a zawm tur a ni. Delivery hmain pipe specification, wall thickness, leh appearance quality te enfiah a ngai a, factory certificate leh test report te pawh finfiah a ngai bawk. Pipe chunglam chu a hmin tur leh bubble leh crack awm lohna tur a ni a, fittings chu deformation leh shrinkage ang chi defect awm lohna tur a ni.
2. Hmanrua leh hmanrua .
Hmanraw hman tlanglawn tak takte chu hot-melt welder, electric-melt welders, pipe cutter, tape measures leh level te an ni. Hot-melt welding hmanrua te hi temperature control dik tak (a tlangpuiin 200-230℃, pipe chi hrang hrang a zirin) a nih theih nan calibrate fo tur a ni.
3. Site dinhmun .
In sak hmain lungpui leh thil hrual hrual hrual hrual chu tifai la, chu chuan a bul a ti zau a, a solid base a awm theih nan. Pipe buried dahna tur chuan pipe-a invenna inthlau tak takte nghawng tlem ber tur atan trench hnuai lamah sand cushion layer tha tak ( 100mm aia tam emaw, a tlukpui emaw) dah tur a ni.
II a ni. Pipe inzawmna technology .
PE pipe connection hman danah chuan hot melt, electric fusion, leh mechanical connection te a awm a, hot melt leh electric fusion te chu hman tam ber a ni.
1. Hot melt connection .
Pipe DN 110mm aia tlem emaw a tlukpui emaw hman theih a ni. Step hrang hrangte chu hetiang hi a ni:
• Pipe tan: Pipe cutter hmangin vertically cut la, a tawp lam face te chu a flat a, burr a awm lo tih enfiah rawh.
• Heating: Pipe leh fitting chu a rualin hot melt welding machine-a heated die-ah dah tur a ni. Pipe diameter angin heating time chu set la (eg, DN50 pipe hi a tlangpuiin second 5-7 chhung a lum thin).
• Welding: Pipe lum chu rang takin dah la, a hmunah fit la, pressure engemaw chen (eg, DN50 pipe, minute 1-2 chhung pressure vawng reng) chu a lum leh a solidified thlengin dah rawh.
2. Electric hmanga siam chhuah theih a ni.
Electric fusion fitting-a internal resistance wire tihlumin he method hian he method hian fusion connection a ti thei a ni. Operation neih chhung hian pipe leh fitting chu axially-a align a nih leh nih loh enfiah la, power-chu hun chuan a siamtu specification (eg, DN160 fitting atan minute 8-12 vel) strict takin a zawm ang.
3. Mechanical connection (backup option) .
Entirnan, flange connection-ah chuan slip-entir nan, thil dang siam pipe inkara project emaw, transition emaw atan hman a ni fo thin a, mahse an long-Term reliability chu fusion aiin a hniam zawk thung.
iii a ni. Pipeline dahna tur .
1. Trench laihchhuahna .
Trench width hian hnathawhna hmun tling (a tlangpuiin pipe diameter {{0}mm chu a sir lehlamah) a siam tur a ni a, a thuk zawng chu design mamawh (eg, lei khuhna chu tui supply pipe chung lam 0.7m aia tam emaw, a tlukpui emaw a ni tur a ni). Lung layer te hi an tawk a nih chuan pipe chhunga stress concentration awm loh nan an inthen lawk a ngai a ni.
2. Pipeline dahna tur .
• Pipeline tihhniam: Manual emaw lifting hmanrua emaw hmang la, inhnaih lo turin zawi zawiin dah rawh.
• Pipeline siamthat: Temporary fixation atan bracket emaw hoist emaw hmang la, pipe-a concentricity deviation chu pipe diameter 1% aia tlem emaw, a tlukpui emaw a nih theih nan enfiah rawh.
• Backfill: Tamp layer khat hnu layer khat, a hmasa berah pipe chunglam atanga 300mm thlenga sand tha tak tak fill hmasa la, chutah chuan original soil hmangin zawi zawiin backfilling rawh. Lung emaw lei vawt emaw hmanga direct backfilling neih khap tlat a ni.
iv. Pressure test leh pawm dan .
Install zawhah pipeline hian strength leh tightness test a neih a ngai a ni:
• Strength Test: Test pressure chu design pressure aiin a let 1.5 in a sang zawk (mahse 0.8 MPa aia tam emaw, a tlukpui emaw). Pressure drop leh leakage a awm lo a, minute 30 chhung zet pressure a awm reng hnuah a awm lo.
• Tightness Test: Hei hi strength test a kal hnuah tih a ni. Test pressure chu design pressure a ni. Darkar 2 chhunga pressure steady steady hnuah pressure drop 1% aia tlem emaw, a tlukpui emaw a awm.
V. Fimkhurna .
1. Temperature effects: Ambient temperature 5℃aia hniam a nih chuan insulation measures emaw welding parameters siamrem a ngai a ni.
2. Scratch awm loh: Pipe lei chunglam a chhiat loh nan lifting leh transportation laiin soft slings hmang ang che.
3. Long-Term Maintenance: Pipeline-ah hian leia tui tlak leh pawn lam chhiatna ang chi hlauhawm awm thei te enfiah fo thin ang che.
PE pipe siamna technology bulpui ber chu standardized connection technique leh rigorous construction management-ah a awm a ni. Scientific material thlan dan, welding control dik tak, leh pawm dan khauh tak hmangin piping system him leh tha taka hman leh service life rei tak a awm theih nan a enkawl a ni. Engineer-te chuan construction result tha ber an neih theih nan site condition tak tak atanga thlirin heng methods te hi flexibly an hmang tur a ni.
