Kauv Welded Steel Tube

ASTM A -252 Specifications

Steel Chemical Composition
Cov tshuaj muaj pes tsawg leeg ntawm cov hlau yuav tsum ua raws li cov cai hauv qab no:
Seamless thiab Welded Tubes: Martin Rauv, Basic Oxygen lossis Hluav Taws Xob Rauv:
Phosphorus, Maximum (%): 0.050

Mechanical Properties

Tso cai Variations
Thickness
Qhov tsawg kawg nkaus phab ntsa thickness ntawm txhua qhov chaw yuav tsum tsis pub tshaj 12.5% ​​​​ntawm qhov teev nominal phab ntsa thickness.
Txoj kab uas hla
Sab nraud txoj kab uas hla ntawm cov yeeb nkab steel pawg yuav tsum tsis txhob sib txawv ntawm cov kab uas teev los ntawm ntau tshaj ± 1%.
Ntev
Qhia ntev ntev nrog kev kam rau siab ntawm ± 1 ".

Kev ua haujlwm, kev kho saum npoo thiab zoo li
Cov pawg tiav yuav tsum ncaj ncaj thiab yuav tsum tsis muaj qhov tsis xws luag ntawm qhov ntau lossis qhov xwm txheej kom ua rau cov yeeb nkab tsis tsim nyog siv los ua pawg.
Deg tsis xws luag yuav tsum tau tso cai mus txog qhov tob tsis tshaj 25% ntawm nominal phab ntsa thickness. Qhov tob yuav txiav txim siab los ntawm kev sib tsoo los yog ua ntaub ntawv.
Deg tsis xws luag yuav tsum raug xam tias yog tsis xws luag thaum lawv qhov tob tshaj 25% ntawm nominal phab ntsa thickness. Vuam yuav tsum tau tso cai los kho qhov tsis xws luag thaum lawv qhov tob tsis tshaj 33 ½% ntawm nominal phab ntsa thickness. Qhov tsis xws luag yuav tsum raug tshem tawm tag nrho ua ntej vuam.

Xaus
Tshwj tsis yog tias tau teev tseg, cov khoom siv yuav tsum yog nplaim taws lossis tshuab txiav qhov kawg. Thaum xaus tau hais kom beveled, lawv yuav tsum tau beveled rau 30 degree + 5 degree - 0 degree . Tag nrho cov burrs yuav tsum tau muab tshem tawm los ntawm qhov kawg.

Tus lej xeem
Ib qho kev ntsuas tensile yuav tsum tau ua ntawm ib ntu lossis ib feem ntawm txhua qhov loj lossis ntawm 200 ntawm txhua qhov sawv cev rau txhua qhov loj. Ib ntu ntawm cov yeeb nkab lossis ib feem ntawm qhov yuav tsum raug kuaj xyuas tensile.

Daim ntawv pov thawj
Raws li qhov kev thov ntawm tus neeg yuav khoom, hauv daim ntawv cog lus lossis kev txiav txim, daim ntawv pov thawj los ntawm cov chaw tsim khoom yuav tsum tau muab cov ntaub ntawv tau tsim thiab sim ua raws li qhov kev qhia tshwj xeeb no, suav nrog cov ntaub ntawv tshuaj ntsuam xyuas thiab tensile.

Kos npe
Txhua pawg yeeb nkab yuav tsum raug cim kom meej meej los ntawm stamping, xuas nrig ntaus los yog dov los qhia: cov chaw tsim khoom lub npe; batch naj npawb; hom yeeb nkab; loj, hnyav, ntev thiab phab ntsa thickness; thiab specification naj npawb thiab qib.