Spirally Welded Steel Pipes ASTM A252 Qib 1 2 3
Mechanical Property
| Qib 1 | Qib 2 | Qib 3 | |
| Yield Point lossis yield zog, min, Mpa (PSI) | 205 (30 000) | 240 (35 000) | 310 (45 000) |
| Tensile zog, min, Mpa (PSI) | 345 (50 000) | 415 (60 000) | 455 (66 000) |
Kev tshuaj xyuas cov khoom
Cov hlau yuav tsum tsis pub ntau tshaj 0.050% phosphorous.
Permissible variations In Weights and Dimensions
Txhua qhov ntev ntawm cov yeeb nkab pawg yuav tsum tau hnyav nyias thiab nws qhov hnyav yuav tsum tsis txhob sib txawv ntau dua 15% tshaj lossis 5% raws li nws qhov hnyav, suav nrog nws qhov ntev thiab nws qhov hnyav ntawm ib chav tsev ntev.
Sab nraud txoj kab uas hla yuav tsum tsis txhob sib txawv ntau tshaj ± 1% ntawm lub npe nominal sab nraud txoj kab uas hla
Phab ntsa thickness ntawm txhua qhov chaw yuav tsum tsis pub ntau tshaj 12.5% raws li cov phab ntsa thickness
Ntev
Ib qho random ntev: 16 txog 25ft (4.88 txog 7.62m)
Ob chav random ntev: tshaj 25ft txog 35ft (7.62 txog 10.67m)
Uniform lengths: permissible variation ± 1in
Xaus
Cov yeeb nkab yuav tsum tau muab tso rau hauv qhov xaus, thiab cov burrs ntawm qhov kawg yuav raug tshem tawm.
Thaum cov yeeb nkab kawg tau teev tseg rau bevel xaus, lub kaum sab xis yuav tsum yog 30 txog 35 degree
Khoom cim
Txhua qhov ntev ntawm cov yeeb nkab pawg yuav tsum raug cim los ntawm stenciling, stamping, los yog dov los qhia: lub npe lossis hom ntawm cov chaw tsim khoom, cov xov tooj cua sov, cov txheej txheem ntawm cov chaw tsim khoom, hom helical seam, sab nraud txoj kab uas hla, nominal phab ntsa thickness, ntev, thiab qhov hnyav ntawm ib chav tsev ntev, qhov kev qhia tshwj xeeb thiab qib.
