ASTM A199 / A199M seamless alloy yeeb nkab yog seamless alloy steel yeeb nkab siv nyob rau hauv cov cua kub exchangers, condensers thiab cov khoom siv sib xws.
Nws ua raws li ASTM A199 / A199M cov qauv, muaj kev ua haujlwm kub zoo heev, cov khoom siv kho tshuab thiab kev tiv thaiv corrosion, thiab tuaj yeem tiv taus qhov kub thiab txias ua haujlwm ib puag ncig kom ntseeg tau tias kev ua haujlwm zoo ntawm cov khoom siv hluav taws xob. Cov yeeb nkab steel no feem ntau muaj nyob rau hauv qhov ntau thiab tsawg los ntawm 1/2 txog 3 ntiv tes (3.2 txog 76.2 hli) sab nraud txoj kab uas hla, tab sis lwm qhov ntau thiab tsawg yog muaj raws li qhov ntev no ua raws li tag nrho lwm cov kev cai ntawm cov lus qhia.
Kev kam rau siab ntawm ASME SA199 Tube
|
Sab nraum Diamter, mm |
Kev kam rau siab,% |
|---|---|
|
3.2 Tsawg dua lossis sib npaug rau OD＜38.1 |
+20/-0 |
|
38.1 Tsawg dua lossis sib npaug rau OD Tsawg dua lossis sib npaug rau 76.2 |
+22/-0 |
Sab nraud txoj kab uas hla ntawm A199 T11 Tubing
|
OD |
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), Incl |
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) |
ASTM A199 Alloy Loj Diameter Tube Length Tolerance
| Cold-Tiav Seamless Tubes | ||
|---|---|---|
| OD, Hauv.(mm) |
Txiav Length, in.(mm) | |
| Tshaj (+) | Hauv qab (-) | |
| Txhua Qhov Loj | 3⁄16 [5] | 0 [0] |
| Hauv qab 2 [50.8] | 1⁄8 [3] | 0 [0] |
| 2 [50.8] thiab ntau dua | 3⁄16 [5] | 0 [0] |
| Hauv qab 2 [50.8] | 1⁄8 [3] | 0 [0] |
| 2 [50.8] thiab ntau dua | 3⁄16 [5] | 0 [0] |
