ASTM A179 seamless carbon steel kav xa los ntawm GNEE yog ua los ntawm cov pa roj carbon zoo los yog hlau alloy, ua los ntawm cov txheej txheem kub dov lossis txias txias, thiab muaj qhov zoo ntawm lub zog siab, kev kub siab, thiab corrosion kuj.
GNEE xa tawm ASTM A179 steel kav mus rau 65 lub teb chaws thiab cheeb tsam thoob ntiaj teb txhua xyoo. Tus nqi yog 5% qis dua lwm tus neeg muag khoom, qhov kev tsim khoom zoo yog nruj me ntsis lav, thiab muaj kev pab cuam tom qab muag ntawm 20 tus neeg. Peb yuav daws txhua qhov kev tsis ntseeg rau koj thiab muab cov kev daws teeb meem rau qhov project! Yog tias koj tab tom nrhiav rau ASTM A179 seamless kav, thov hu rau peb hauv lub sijhawm kom tau txais nqe lus!
Chemical Compositions ntawm ASTM A179 Tubes
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Chemical Components (%) |
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|
C |
Si | Mn | P | S | Mo | Cr | V |
| 0.06-0.18 | / | 0.27-0.63 | Tsawg dua lossis sib npaug rau 0.035 | Tsawg dua lossis sib npaug rau 0.035 | / | / |
/ |
Mechanical Properties ntawm ASTM A179 Seamless Steel Pipe
|
Mechanical Properties |
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|
Tensile |
Yield Lub zog (Mpa) |
Elongation (%) |
Hardness (HRB) |
| Ntau dua lossis sib npaug rau 325 | Ntau dua lossis sib npaug li 180 | Ntau dua lossis sib npaug li 35 |
Tsawg dua lossis sib npaug li 72 |
Phab ntsa Thickness kam rau ua raws li qhov yuav tsum tau ua
|
Seamless, Cold-Tiav Tubes |
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|
Sab nraud txoj kab uas hla |
Phab ntsa thickness kam rau ua% | |
|
Tshaj (+) |
Hauv qab (-) |
|
|
1 ½ (38.1) |
20 | 0 |
| Tshaj 1½ (38.1) | 22 |
0 |
Sab nraud txoj kab uas hlantawm cov kev cai xeem
|
Cold-Tiav Seamless Tubes |
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|
Sab nraud txoj kab uas hla |
Permissible Variations In. (mm) | |
| Tshaj (+) |
Hauv qab (-) |
|
|
Hauv qab 1 (25.4) |
0.004 (0.1) | 0.004 (0.1) |
|
1 txog 1 ½ (25.4 txog 38.1), Inc |
0.006 (0.15) | 0.006 (0.15) |
|
Tshaj 11⁄2 txog 2 [38.1 txog 50.8], Excl |
0.008 (0.2) | 0.008 (0.2) |
| 2 rau 21⁄2 [50.8 to 63.5], Excl | 0.010 (0.25) |
0.010 (0.25) |
| 21⁄2 rau 3 [63.5–76.2], Excl | 0.012 (0.3) |
0.012 (0.3) |
