E uiga iASTM A234 WPB paipa paipa
ASTM A234 o Fa'amatalaga Fa'asinomaga mo paipa u'amea fa'apipi'i e aofia ai le kaponi ma mea u'amea u'amea mo auaunaga feololo ma maualuga.E ufiufi u'amea fa'apipi'i o ituaiga e le'i fa'aogaina ma uelo.O mea fa'apipi'i paipa uamea o lo'o fa'aogaina i paipa fa'amalosi ma i faufale va'a.O mea fa'apipi'i e aofia ai u'amea mate, fa'amau, fa'amau, ipu, mea fa'apipi'i po'o le HFW (fusion welded), fa'atasi ai ma le fa'atumu o u'amea.
O le a le WPB?
W = LELEI / ga'o
P = FESOASOANI I LE P NUMERA O MEA FAI ALOU
B = FA'A'ALI'I I LE FA'A'ITIITIA O FA'AIGA
O lo'o maua i toe iloiloga lata mai o ASME B16.9, B16.11, MSS-SP-79, MSS-SP-83, MSS-SP-95, ma MSS-SP-97.Fa'aoga lautele i paipa fa'amalosi ma i totonu o le fa'apipi'iina o va'a mo le tautua i le vevela ma le maualuga.O togi o ASTM A234 WPB, WPC, WP5, WP9, WP91, WP11, WP12 ma WP22.
Fa'amatalaga:
Tulaga: ANSI / ASME B16.9, B16.28, MSS-SP-43.
Vaitaimi fafo: 1/2" i le 48"
Va'aiga Mafiafia: SCH 10, sch 20, SCH 40, SCH STD, SCH 80, SCH XS, SCH 160, SCH XXS ma isi.
Pipa u'amea fa'apipi'i tu'aiga fa'ameamea ile fa'ameamea, filo, uelo fa'amau, ma fa'alelei.
Tulaga Fa'a'ala'au (%) o le ASTM A234
| Vasega | C | Mn | P | S | Si | Cr | Mo | Ni | Cu | V | Nb |
| WPB | 0.3 | 0.29-1.06 | 0.05 | 0.058 | 0.1min | 0.4 | 0.15 | 0.4 | 0.4 | 0.08 | 0.02 |
| WPC | 0.35 | 0.29-1.06 | 0.05 | 0.058 | 0.1min | 0.4 | 0.15 | 0.4 | 0.4 | 0.08 | 0.02 |
| WP11 CL1 | 0.05-0.15 | 0.30-0.60 | 0.03 | 0.03 | 0.50-1.00 | 1.00-1.50 | 0.44-0.65 | - | - | - | - |
| WP11 CL2/3 | 0.05-0.20 | 0.30-0.80 | 0.04 | 0.04 | 0.50-1.00 | 1.00-1.50 | 0.44-0.65 | - | - | - | - |
Mea fa'ainisinia o le ASTM A234
| Manaoga Tensile | WPB | WPC, WP11CL2 | WP11CL1 | WP11CL3 |
| Malosi Tetele, min, ksi[MPa] | 60-85 | 70-95 | 60-85 | 75-100 |
| (0.2% offset po'o le 0.5% fa'aopoopo-lalo-load) | [415-585] | [485-655] | [415-585] | [520-690] |
| Malosi e maua, min, ksi[MPa] | 32 | 40 | 30 | 45 |
| [240] | [275] | [205] | [310] |
A234 WPB tutusa
| Paipa | Mea fa'apipi'i | Flange | Valves | U'u & Nati |
| ASTM A106 Gr A | ASTM A234 Gr WPA | ASTM A105 | ASTM A216 Gr WCB | A193 Gr B7 A194 Gr 2H |
| ASTM A106 Gr B | A234 Gr WPB | ASTM A105 | ASTM A216 Gr WCB | |
| ASTM A106 Gr C | ASTM A234 Gr WPC | ASTM A105 | ASTM A216 Gr WCB |
(1) O le aofaiga o Cu, Ni, Cr, ma Mo e le sili atu i le 1.00%.
(2) Ole aofaiga ole Cr ma le Mo e le tatau ona sili atu ile 0.32%.
(3) Mo fa'aitiitiga ta'itasi o le 0.01% i lalo ole C max., ose fa'asiliga o le 0.06% Mn (4) i luga a'e o le maualuga fa'amaoti.o le a fa'atagaina, e o'o i le maualuga.o le 1.35%.
(5) Ole maualuga.kaponi tutusa (CE) e tatau ona 0.50, faʻavae i luga o suʻesuʻega vevela ma le (6) fua faʻatatau CE=C+Mn/6+(Cr+Mo+V)/5+(Ni+Cu)/15.
Le Eseesega i le va o le A105 ma le A234
ASTM A234 WPB Pipe Fittings o lo'o fa'apipi'iina i u'amea kaponi uamea e matua malolosi ma mafai ona fa'aoga i mana'oga maualuga.Ole ASTM A234 WPB e fa'afefeteina ona fa'ataga ona fa'amalie vave.
O mea fa'apipi'i uamea uamea o paipa fa'apipi'i mai mea A105.O nei mea e gaosia i le annealed, normalized, normalized ma ita po o tineia ma ita tulaga.
Taimi meli: Oke-08-2021