Paipa fa'apipi'i ASTM A234 WPB & WPC e aofia ai tulilima, tee, ma mea fa'aitiitia
Fa'atulagaga Fa'akemikolo o le ASTM A234 WPB & WPC
| Elemene | Anotusi, % | |
| ASTM A234 WPB | ASTM A234 WPC | |
| Kaponi [C] | ≤0.30 | ≤0.35 |
| Manganese [Mn] | 0.29-1.06 | 0.29-1.06 |
| Fosforus [P] | ≤0.050 | ≤0.050 |
| Sulfur [S] | ≤0.058 | ≤0.058 |
| Silikoni [Si] | ≥0.10 | ≥0.10 |
| Kromium [Cr] | ≤0.40 | ≤0.40 |
| Molibdenuma [Mo] | ≤0.15 | ≤0.15 |
| Nikel [Ni] | ≤0.40 | ≤0.40 |
| Kopa [Cu] | ≤0.40 | ≤0.40 |
| Vanadium [V] | ≤0.08 | ≤0.08 |
*E lē tatau ona sili atu i le 0.50 le Carbon Equivalent [CE=C+Mn/6+(Cr+Mo+V)/5+(Ni+Cu)/15] ma e tatau ona lipotia i le MTC.
Meatotino Fa'amekanika o le ASTM A234 WPB & WPC
| Vasega ASTM A234 | Malosiaga o le Tete'e, min. | Malosiaga o le Gaoioiga, min. | % Fa'aumiumi, min | |||
| ksi | MPa | ksi | MPa | Fa'aumiumi | Fa'alava | |
| WPB | 60 | 415 | 35 | 240 | 22 | 14 |
| WPC | 70 | 485 | 40 | 275 | 22 | 14 |
*1. O paipa WPB ma WPC e gaosia mai papatusi e tatau ona itiiti ifo i le 17% le umi.
*2. Se'i vagana ua mana'omia, e le mana'omia ona lipotia le tau o le ma'a'a.
Gaosiga
E mafai ona faia paipa u'amea kaponi ASTM A234 mai paipa e leai ni so'oga, paipa ua fa'apipi'i pe o ni papatusi e ala i le fa'atulagaina o galuega o le oomiina, fa'a'oto, fa'a'oso, punou, fa'apipi'i fa'atasi, masini, pe ala i le tu'ufa'atasia o nei galuega e lua pe sili atu. O fa'apipi'i uma e aofia ai fa'apipi'i i oloa paipa e faia mai ai fa'apipi'i e tatau ona faia e tusa ai ma le ASME Vaega IX. O le togafitiga vevela pe a uma ona fa'apipi'i i le 1100 i le 1250°F [595 i le 675°C] ma le su'esu'ega o le X-ray e tatau ona faia pe a uma le faiga o le fa'apipi'i.