Khoom Lub Npe: ASTM A252 Qib 2 / Qib 3 ERW Hluav Taws Xob Ua Haujlwm Welded Dub Painted Carbon Steel Yeeb Nkab
Txuj Ci Ntau Lawm: ASTM A252 (American Standard for Welded & Seamless Steel Pipe Piles)
Kev Tsim Kho Tshuab: ERW Siab -Frequency Electric Resistance Longitudinal Welded
Nto tiav:Uniform Dub Anti-Xeb Xim Txheej (Matte Dub, tiv thaiv- xeb rau ntug dej hiav txwv Ecuador av noo)
Core Application (Ecuador Main Use):
- Civil engineering foundation yeeb nkab piling, choj pier txhawb nqa, tuav phab ntsa piling
- Txoj kev loj, kev tsim kho hauv nroog, lub hauv paus tsev tsim, chaw nres nkoj & ntug dej hiav txwv infrastructure (Ecuador Guayaquil, Quito coastal & inland construction projects)
- Underground casing, qauv kev txhawb nqa rau lub zos Ecuador vaj tse & tsoom fwv infrastructure kev sib tw tej yaam num
Technical Specifications
Cov ntaub ntawv dav dav
| Parameter | Paub meej |
| Txuj | ASTM A252 (kuj kho tshiab) |
| Qib | Qib 2 (GR2), Qib 3 (GR3) |
| Hom yeeb nkab | ERW (Electric Resistance Welded) Cov yeeb nkab steel |
| Kev tsim khoom | Siab -Frequency ERW (HF-ERW) |
| Nto tiav | Dub Painting (Oxide txheej) |
| Xaus Xaus | Plain End / Bevel End (yeem xaiv threaded lossis grooved) |
| Ntev | 6m, 12m, lossis raws li tus neeg siv khoom xav tau |
| Ntev Ntev | ± 1% (raws li kev sib tham) |
| Sab nraud Diameter (OD) | 21.3mm - 660mm (customizable mus txog qhov ntau thiab tsawg) |
| Phab ntsa Thickness | 1.0mm - 26.97mm (raws li qib thiab kev xav tau) |
| Cov qauv siv tau (Lwm yam) | API 5L GRB, X42–X70, BS 1387, EN 10219 |
| Cov ntawv xeem | MTC (Mill Test Certificate), Mechanical Test, Flattening Test, NDT |
Mechanical Properties – Qib 2 vs Qib 3
| Khoom | ASTM A252 GR2 | ASTM A252 GR3 |
| Yam tsawg kawg nkaus Yield Strength | 35,000 psi (240 MPa) | 45,000 psi (310 MPa) |
| Yam tsawg kawg Tensile Strength | 60,000 psi (415 MPa) | 66,000 psi (455 MPa) |
| Elongation (hauv 2 nti) | ~25% | ~20% |
| Yield Strength Txhim Kho vs GR2 | Lub hauv paus | ↑19% |
| Tensile Strength Txhim Kho | Lub hauv paus | ↑17% |
| Siv Pile Qhov tob | Tsawg dua los yog sib npaug li 40m (nruab nrab-cov khaubncaws sab nraud povtseg) | 40-100m + (ntev txheej) |
| Tus nqi kim kim | Lub hauv paus | +15–20% |
Nco tseg: Qib siab tus lej=kev ua haujlwm siab dua. Elongation txawv nrog phab ntsa tuab raws li ASTM A252 mis E=32t+10 (t hauv mm)
Chemical Composition (Hom rau Qib 3)
| Element | Kev xav tau Max |
| Cov pa roj carbon (C) | Tsawg dua lossis sib npaug li 0.22% |
| Phosphorus (P) | Tsawg dua lossis sib npaug li 0.025% |
| Sulfur (S) | Tsawg dua lossis sib npaug li 0.035% |
Lus Cim: ASTM A252 tsis qhia tag nrho cov tshuaj muaj pes tsawg leeg -kev ua haujlwm tshuab tswj kev lees paub. Qib 2 tso cai rau cov ntsiab lus C thiab S siab dua me ntsis.
Daim ntawv thov
Ecuador Market-Cov ntawv thov tshwj xeeb
Raws li 2025 cov ntaub ntawv, Ecuador cov hlau ntshuam tau kwv yees ntau dua 1.8 lab tons, nrog rau cov kav hlau welded carbon steel ntes 35% ntawm kev ua lag luam. Cov ntawv thov tseem ceeb suav nrog-25:
Roj & Gas Pipeline Infrastructure:Kev thauj mus los ntawm cov roj av thiab roj av hauv Amazon phiab thiab ntug hiav txwv-34
High-Rise Building Foundations: Skyscrapers requiring deep pile foundations (GR3 mandatory for depths >40m)
Choj Piers thiab Overpasses:Hauv nroog loj choj, hla - hiav txwv choj foundations
Chaw nres nkoj thiab Dock Facilities:Guayas cheeb tsam thiab ntug dej hiav txwv infrastructure xav tau kev txhawb nqa ruaj khov
Industrial Facilities:Fais fab nroj tsuag, refineries, tshuaj nroj tsuag
Kev txuag dej qhov project:Kev tiv thaiv Riverbank, reservoir dams (tsis yog-ib puag ncig corrosive)
Structure Supports thiab Drill Casings:Cov ntawv thov thib ob hauv kev tsim kho
Phau Ntawv Qhia Qib
| Qib | Pom zoo daim ntawv thov |
| GR 2 | Cov hauv paus tsev dav dav (tsawg dua lossis sib npaug li 30 zaj dab neeg), nruab nrab- cov txuas hniav, cov dej hauv av txuag dej, cov av ruaj khov |
| GR 3 | Super siab- cov tsev nce siab (100m + lub hauv paus), hla- hiav txwv txuas hniav, tob- cov chaw nres nkoj dej, thaj chaw seismic, nyuaj / ntom av |
Cov lus nug nquag nug (FAQ)
Q1: Qhov txawv ntawm ASTM A252 Qib 2 thiab Qib 3 yog dab tsi?
A: Grade 3 offers higher mechanical strength. Grade 2 has a minimum yield strength of 240 MPa and tensile strength of 415 MPa, suitable for general piling projects. Grade 3 delivers 310 MPa yield strength and 455 MPa tensile strength, making it the preferred choice for deep foundations (>40m), siab- cov tsev nce siab (100m+), hla- hiav txwv txuas hniav, thiab thaj chaw seismic. Qib 3 kuj tseem muaj kev txhim kho qis -kub toughness (dhau -20℃cuam tshuam kev xeem).
Q2: Vim li cas thiaj xaiv ERW (Electric Resistance Welded) es tsis txhob seamless yeeb nkab?
A: ERW kav dej muaj ntau qhov zoo: (1) tus nqi qis dua cov kav dej seamless, (2) ze dua phab ntsa thickness kam rau ua, (3) cov khoom siv tsis zoo, thiab (4) kev ua haujlwm ntau dua. Rau cov ntawv thov piling uas tsis tas yuav tsum muaj siab heev, ERW muab qhov zoo tshaj qhov sib npaug ntawm kev ua tau zoo thiab tus nqi - ua tau zoo.
Q3: Dab tsi yog qhov ua haujlwm ntawm kev pleev xim dub? Puas yog nws txaus rau kev tiv thaiv corrosion?
A: Dub pleev xim (Oxide txheej) muab kev tiv thaiv corrosion ib ntus thaum khaws cia, tuav, thiab kev thauj mus los. Rau lub sijhawm ntev - kev pabcuam nyob rau hauv ib puag ncig hnyav (cov cheeb tsam hauv hiav txwv hiav txwv, cov av paug, siab - thaj tsam salinity zoo li Guayas), cov txheej txheem ntxiv xws li epoxy, 3PE, lossis cathodic tiv thaiv yog pom zoo.
Q4: Cov ntaub ntawv dab tsi kuv xav tau rau kev xa tawm mus rau Ecuador?
A: Rau kev lis kev cai du hauv Ecuador, koj yuav xav tau:
Kev Lag Luam Invoice & Cov Ntawv Sau (nrog RUC tus lej se ntawm Ecuador importer)
Daim Ntawv Pov Thawj (B / L)
Daim ntawv pov thawj ntawm Keeb Kwm
Mill Test Certificate (MTC) - ob hom lus (English/Spanish) nrog rau tus naj npawb cua sov, qib steel, thiab NTE INEN siv
INEN-1 COC Certificate (Certificate of Conformity) - yuav tsum tau rau tag nrho cov hlau ntshuam
WPS/PQR (Vuam txheej txheem Specification/Qualification Record) - yuav tsum tau rau welded kav
Ua ntej-Kev Tshawb Fawb Kev Xa Khoom (raws li xav tau)
Peb tuaj yeem pab koj npaj txhua cov ntaub ntawv xav tau.
Q5: Koj puas tuaj yeem muab kev cai yeeb nkab qhov ntev?
A: Yog. Peb lees txais kev cai txiav txim rau sab nraud (OD), phab ntsa tuab (WT), ntev (txog 18m lossis ntev dua), kev ua tiav tiav (dawb, beveled, threaded, grooved), thiab coatings tshwj xeeb. Thov hu rau peb nrog koj cov kev xav tau tshwj xeeb.
Q6: Lub sijhawm ua khoom lag luam yog dab tsi?
A: Lub sij hawm ua tus qauv yog 15-25 hnub tom qab tso nyiaj pom zoo. COC daim ntawv pov thawj (yog tias xav tau rau Ecuador) yuav tsum pib 4-8 lub lis piam ua ntej xa khoom xa tuaj. Rush xaj tuaj yeem muaj thaum sib tham.
Q7: Koj puas muab kev pabcuam thib peb -kev kuaj xyuas tog?
A: Yog. Peb tuaj yeem npaj qhov thib peb- kev tshuaj xyuas thib peb los ntawm SGS, BV, lossis lwm lub koom haum tau lees paub raws li tus neeg yuav khoom thov.
Q8: Koj tus MOQ (Qhov Kev Txiav Txim Tsawg Kawg) yog dab tsi?
A: Yam tsawg kawg nkaus txiav txim kom muaj nuj nqis yog feem ntau 5 tons ib specification. Cov khoom me me tuaj yeem muaj thaum sib tham.
Q9: Kuv puas tuaj yeem tuaj xyuas koj lub Hoobkas ua ntej xaj?
A: Yog lawm. Peb zoo siab tos txais cov neeg siv khoom los ntawm thoob plaws lub ntiaj teb tuaj xyuas peb cov chaw tsim khoom. Thov hu rau peb kom teem caij teem sijhawm.
Q10: Koj puas muab cov qauv dawb?
A: Yog lawm, kuaj dawb muaj nyob rau ntawm kev thov. Thov muab koj cov kev xav tau tshwj xeeb rau kev npaj ua qauv. Tus nqi thauj khoom rau cov qauv feem ntau yog los ntawm tus neeg yuav khoom tshwj tsis yog tias pom zoo.
Peb qhov chaw nyob
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Xov tooj (whatsApp/Wechat)
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E -mail
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Cim npe nrov: a252 gr2 gr3 erw welded steel yeeb nkab dub pleev xim rau ecuador lag luam, Tuam Tshoj a252 gr2 gr3 erw welded steel yeeb nkab dub pleev xim rau ecuador lag luam, lwm tus neeg, Hoobkas
