ASTM A252 GR2 kauv welded yeeb nkab pawg yog Qib 2 kauv submerged arc welded (SSAW) steel yeeb nkab pawg uas ua raws li tus qauv ASTM A252, tshwj xeeb tsim rau kev thauj khoom -cov kabmob. Nws cov yam ntxwv tseem ceeb suav nrog cov txheej txheem welding, tag nrho - ntev kev soj ntsuam vuam, thiab qis- cov khoom siv carbon alloy steel nrog lub zog tawm los ntawm Ntau dua lossis sib npaug rau 310 MPa thiab lub zog tensile ntawm Ntau dua lossis sib npaug rau 455 MPa. Nws yog qhov tsim nyog rau kev thauj khoom-cov kabmob xws li choj pawg hauv paus thiab lub hauv paus hauv tsev, thiab yuav tsum muaj cov txheej txheem tiv thaiv{12}} txhawm rau tiv thaiv ib puag ncig corrosive.
ASTM A252 Gr 2 Steel Piles specification
Txheej Txheem: Kauv Submerged -Arc Welded Steel Yeeb Nkab
Kev siv: sedfolowprssureliquiddeliverysuchaswater, gasandoiconstructonandpiling
Txuj: API 5L, API 5CT, ASTM A252, ASTM 53, EN10217, EN10219, BS, JIS, IS
Daim ntawv pov thawj: EN10217, EN10219, API 5L PSL1 / PSL2, API 5CT
Tawm Dav: 219.1mm-2540mm (8"-100")
Phab ntsa Thickness: 3.2mm-25.4mm
Ntev: 6-22 m
Hlau Qib: ASTM A252 GR 1, GR 2, GR 3
Nto: Fusion daim ntawv cog lus Epoxy txheej, Coal Tar Epoxy, 3PE, Vanish Txheej, Bitumen txheej, Roj Dub txheej raws li tus neeg siv khoom xav tau
Kev xeem: Tshuaj ntsuam xyuas Chemical Component, Mechanical Properties (Qhov kawg tensile zog, Yield zog, Elongation), Technical Properties (Flatter
ray Test
Mill Test Certificate: EN 10204 / 3.1B
Cov txheej txheem tsim khoom rau ASTM A252 GR2 kauv welded yeeb nkab pawg yog raws li hauv qab no:
- Raw Material Preparation: Steel strip coils yuav tsum tau ua kom zoo, txiav, thiab npaj kom muaj qhov zoo raws li qhov yuav tsum tau ua.
- Kev tsim thiab vuam:
- Spiral Forming: Hlau strips yog dov rau hauv cov kav dej siv lub tshuab sib sau.
- Muab ob npaug rau-Sided Submerged Arc Vuam: Vuam yog ua los ntawm ob lub tshuab vuam sab hauv thiab sab nraud. Qhov tob tob ntawm qhov vuam yog ntau dua lossis sib npaug li 1.5 hli.
- Kev soj ntsuam zoo: 100% ultrasonic tsis siv neeg qhov tsis zoo ntawm qhov vuam seam; qhov kev tshawb pom rhiab heev yuav tsum ua raws li tus qauv.
- Txhua cov yeeb nkab steel tau dhau qhov kev sim siab hydrostatic ntawm ob zaug ntawm kev ua haujlwm siab rau ntau dua lossis sib npaug li 15 vib nas this.
- Ncej -Kev Ua Haujlwm: Yeeb nkab kawg machining los tswj qhov kawg ntawm lub ntsej muag perpendicularity thiab bevel kaum qhov tseeb.
- Anti- daim ntawv thov txheej corrosion (xws li, epoxy resin, iav flake txheej) los tiv thaiv ib puag ncig corrosive.
Mechanical Properties
|
STEEL Qib |
Yield zog, min. psi (MPa) |
Tensil zog, min. psi (MPa) |
Elongation hauv 2 hauv., min. % |
|
|
QIB 2 |
35,000 (240) |
60,000 (415) |
25% |
|
ASTM A252 Dimensions
Sab nraud txoj kab uas hla thiab phab ntsa Thickness
Sab Nraud Sab Nraud: Qhov ntau thiab tsawg ntawm 219.1mm txog 3620mm (8 nti txog 144 ntiv tes)
Phab ntsa Thickness Range: 5mm txog 30mm, kho raws li qhov yuav tsum tau ua
Tolerances:
Sab nraud Txoj kab uas hla tsawg dua lossis sib npaug ntawm 508mm: ± 1% lossis ± 1.0mm (qhov twg ntau dua)
Sab nraud txoj kab uas hla > 508mm: ± 1% lossis ± 4.0mm (qhov twg ntau dua)
Ntev thiab Khoom siv
Standard Length: Feem ntau 6m mus rau 12m, kev cai ntev muaj (piv txwv li, 18m, 24m)
Khoom siv: Tsawg carbon alloy steel, yield zog Ntau dua los yog sib npaug rau 310 MPa, tensile zog Ntau dua los yog sib npaug rau 455 MPa
Lwm Yam Xav Tau
Vuam txheej txheem: Kauv submerged arc vuam (SSAW) yog yuav tsum tau, weld nkag qhov tob Ntau tshaj los yog sib npaug rau 1.5mm
Kev Tiv Thaiv Corrosion: Epoxy resin lossis iav flake txheej yuav tsum tau tiv thaiv ib puag ncig corrosive.
A252 GR2 SSAW Yeeb Nkab Daim Ntawv Thov
Permanent Load-Cov Qauv Kabmob
Choj Pile Foundations: Pier thiab abutment kev them nyiaj yug rau tus ntoo khaub lig- choj / dej hiav txwv (pile txoj kab uas hla Ntau dua los yog sib npaug rau 609mm, dynamic load resistant)
High-Rise Building Deep Foundations: Core tube pile foundations for ultra-high-rise buildings (ib pawg bearing peev ntau dua lossis sib npaug li 8000kN)
Industrial Plant Foundations: Cov cuab yeej siv hnyav hnyav (qib GR2 muab tus nqi zoo dua -kev ua tau zoo dua GR3)
Tej hauj lwm ib ntus
Foundation Pit Support Piles: Sib sib zog nqus lub hauv paus kev txhawb nqa rau subways / lub tsev (phab ntsa thickness 6-10mm, tus nqi 15% qis dua GR3)
Kev Txhawb Kev Tsim Kho Platform: Ib ntus wharves, choj erecting tshuab platforms (kev txhim kho sai, rov ua dua)
Hnyav Environmental Engineering
Ports thiab Wharves: Yuav tsum tau epoxy resin txheej (qhuav zaj duab xis Ntau dua los yog sib npaug rau 300μm, ntsev corrosion resistant)
Offshore Structures: Breakwater / bank tiv thaiv pawg (GR2 + kub-dip galvanizing, lifespan 20+ xyoo)
Av Corrosion Zones: Kev sib kis ntauwd hauv paus (siv 3PE txheej rau tshuaj tiv thaiv corrosion)
