A490 TC bolts yog twist -tawm qhov nro tswj fasteners rau qhov siab tshaj - lub zog sib txuas. Qib F2280 muab qhov kev ua siab loj tshaj plaws muaj nyob rau hauv ASTM cov txheej txheem ntau yam, yog li lub sijhawm thav duab, crane khiav, thiab lub hauv paus tshuab tau txais qhov siab tshaj plaws clamp quab yuam ib tus ntsia liaj qhov rooj.
Cov khoomNta
150 ksi nyob rau txhua txoj kab uas hla
Yam tsawg kawg tensile yog 150 ksi (1035 MPa) nrog 130 ksi (896 MPa) tawm los thiab 120 ksi (827 MPa) pov thawj load - qib siab tshaj hauv ASTM F3125.
01
Alloy Steel, Hardened los ntawm
Lub AISI 4140- hom alloy core yog quenched thiab tempered rau uniform hardness nyob rau hauv tag nrho cov cross-section, yog li txawm lub loj tshaj diameters tuav tensile lub zog tsis muaj zog me ntsis.
02
Twist-Tawm, Tus Kheej-Tshwj xeeb
Lub spline so huv si ntawm qhov xav tau pretension. Ib tug sheared Tail yog cov ntaub ntawv zoo: qhov sib koom ua ke yog tensioned, paub tseeb los ntawm kev suav thaum kuaj.
03
Plain Finish nkaus xwb
A490 TC bolts tau teev nyob rau hauv cov xim dub nkaus xwb. Pickling thiab txheej txheej txheej qhia txog hydrogen, thiab ncua kev puas tsuaj tuaj yeem ua raws li kev thauj khoom. Corrosive sab nraum kev sib txuas hu rau galvanized structural qib hloov.
04
Qib-Tau taub hau, Traceable Lots
Lub taub hau hex hnyav nqa A490 qib qhab nia thiab cov cim chaw tsim khoom, thiab txhua qhov ntau tau muab nrog MTRs yog li cov hlau alloy chemistry taug qab mus rau qhov kub.
05
Cov khoomSpecifications
|
Yam khoom |
Specification |
|
Khoom npe |
A490 TC Bolt / A490 Tension Control Bolt |
|
ASTM Daim Ntawv Pov Thawj |
ASTM F3125 Qib F2280 |
|
Khoom siv |
Alloy steel (AISI 4140 hom), quenched & tempered |
|
Tensile zog |
150 ksi (1035 MPa) min, tag nrho cov kab |
|
Yield zog |
130 ksi (896 MPa) min |
|
Pov thawj Load |
120 ksi (827 MPa) |
|
Xov |
UNC xov, Class 2A |
|
Hom Lub taub hau |
Heavy hex (ib F3125) |
|
Txiv ntseej |
A563 Qib DH, hnyav hex |
|
Lub tshuab ntxhua khaub ncaws |
F436 Hom 1 |
|
Ua kom tiav |
Plain (dub) nkaus xwb |
|
Kev sib dhos |
Bolt + txiv ntseej + ntxhua khaub ncaws, sib phim ntau |
|
Qhov ntau thiab tsawg |
1/2 "mus rau 1-1/2" |
|
Ntev |
1-1/2″–6″ |
Cov khoomDaim ntawv thov
Siab -Rise Moment Frames
Kem-rau-beam moment connections and transfer girders where drift and fatigue, not cost, tswj tus spec.
Crane & Hnyav Lifting
Cov kab hluav taws xob, cov kab hluav taws xob monorail, thiab hoist txhawb steel. A490 TC bolts tiv thaiv qhov thim rov qab thiab cuam tshuam kev thauj khoom cranes siv rau lawv txoj kev txhawb nqa.
Heavy Industrial Cog
Cov tuam tsev zeb, lub tshuab hluav taws xob txhawb nqa hlau, thiab cov cuab yeej siv hauv cov nroj tsuag steel, smelters, thiab chaw nres tsheb fais fab.
Ntev -Span & Cov Qauv Tshwj Xeeb
Cov rooj zaum hauv chaw ntau pob, cov ntsiab lus - chaw ua si steel, thiab ntev - lub ru tsev uas qhov siab tshaj plaws clamp nyob rau hauv qhov tsawg kawg nkaus bolts suav shortens erection lub sij hawm.
FAQ
Q: Vim li cas A490 TC bolts tsis tuaj yeem galvanized?
A: Hydrogen embrittlement. 150 ksi alloy steel yog nquag hydrogen-induced ncua kev puas tsuaj, thiab ob qho tib si pickling thiab galvanizing qhia hydrogen. F2280 yog dawb (dub) tiav xwb. Rau ib puag ncig corrosive, siv A325 / F1852 HDG.
Q: Puas yog A490 TC bolts rov siv tau?
A: Tsis yog. Thaum tus Tsov tus tw spline tau sheared, lub rooj sib txoos tsis tuaj yeem rov ua dua -tensioned rau ib qho kev txhim khu kev qha. RCSC kho cov twist -tawm bolts li ib zaug- siv: ib qho xoob lossis tshem tawm A490 TC ntsia liaj qhov rooj yog hloov, tsis txhob rov ua dua -torqued.
Q: A490 lossis A325 - Kuv yuav tsum qhia qhov twg TC ntsia liaj qhov rooj?
A: A490 rau sab hauv, siab tshaj - thauj khoom sib txuas; A325 rau sab nraum zoov lossis choj hlau uas xav tau kub -dip galvanizing. Yog tias corrosion txiav txim siab, xaiv A325; yog tias clamp quab yuam txiav txim siab, xaiv A490. Xa daim duab yog tias hu tsis meej.
Xa txoj kab uas hla, tuav, thiab kom muaj nuj nqis - cov lus tsocai ua raws nrog MTRs, traceability ntau, thiab lub sijhawm ua haujlwm.
Cim npe nrov: a490 tc bolts, Tuam Tshoj a490 tc bolts manufacturers, lwm tus, Hoobkas
