ndi Cu ≤ 0.50%; Ndi ≤ 0.50%; Cr ≤ 0.50% ndi Mo ≤ 0.15%.

b Pakuchepetsa kulikonse kwa 0.01% pansi pamlingo womwe wafotokozedwa pamlingo wa kaboni, kuwonjezeka kwa 0.05% pamwamba pamlingo womwe waperekedwa kwa Mn ndikololedwa, mpaka 1.65% pamlingo wa ≥ L245 kapena B, koma ≤ L360 kapena X52; mpaka 1.75% pamlingo wapamwamba> L360 kapena X52, koma <L485 kapena X70; ndi kufika pa 2.00 % pa Giredi L485 kapena X70.

c Pokhapokha atagwirizana mwanjira ina, Nb + V ≤ 0.06 %.

d Nb + V + Ti ≤ 0.15 %.

e Pokhapokha atagwirizana.

f Pokhapokha atagwirizana mwanjira ina, Nb + V + Ti ≤ 0.15 %.

g Palibe kuwonjezera dala kwa B ndikololedwa ndipo B yotsalira ≤ 0.001 %.

Gulu la Pipe

ku

C ndi 1940 powerengera pogwiritsa ntchito ma SI mayunitsi ndi 625,000 powerengera pogwiritsa ntchito ma USC;

Axc ndiye gawo loyeserera loyeserera, lomwe limawonetsedwa masikweya mamilimita (ma mainchesi akulu), motere:

1) kwa zozungulira mtanda gawo mayeso zidutswa, 130 mm2 (0.20 mu.2) kwa 12.7 mm (0.500 mu.) ndi 8.9 mm (0.350 mu.) zidutswa mayeso awiri; 65 mm2 (0.10 mu.2) kwa 6.4 mm (0.250 mu.) zidutswa mayeso awiri;

2) pazigawo zonse zoyeserera, zocheperako za a) 485 mm2 (0.75 in.2) ndi b) gawo lagawo lachiyeso, lotengedwa pogwiritsa ntchito mainchesi akunja akunja ndi makulidwe a khoma la chitoliro, kuzungulira kwa 10 mm2 wapafupi (0.01 mu.2);

3) kwa zidutswa zoyeserera, zochepa za a) 485 mm2 (0.75 mu.2) ndi b) gawo la gawo lachiyeso, lopangidwa pogwiritsa ntchito m'lifupi mwake mwachiyeso choyesera komanso makulidwe a khoma la chitoliro. , yozungulira mpaka 10 mm2 yapafupi (0.01 mu.2);

U ndi mphamvu yocheperako yokhazikika, yowonetsedwa mu megapascals (mapaundi pa inchi imodzi).