Ko te Paepae 20G He paipa Kohua Tira Korekore e tika ana ki nga ngongo tuitui mo te hanga i te korohu mamaoa he teitei, teitei ake ranei te pehanga me nga ngongo tuitui ka whakamahia hei paipa.
20G putorino maitai tui ko te waro hanganga maitai teitei, rauemi kōhua, te ihirangi waro o 0.17-0.24%, kaha tensile o 410Mpa, ira tuku 230-250Mpa. Ko ta matou hanga matua o te maitai, ka taea e matou te whakarato 20G Seamless pipe me te kounga teitei me te utu whakataetae. Kei konei ki te whakamohio ki a koe ki a maatau paipa 20G nga mea matū taketake me nga taonga miihini.
UT(Whakamātautau Ultrasonic), AR(Hei Huri Hurihia anake), TMCP(Tukatuka Mana Hangarau), N(Whakatikatika), Q+T(Kua tineia me te Hurihia), Z Direction Test (Z15,Z25,Z35), Charpy V- Whakamātautau Pānga Kāniwha, Te Whakamātautau Tuatoru (pēnei i te Whakamātautau SGS), Whakauhia, Whakatangihia ranei te pupuhi me te peita.Taenga taapiri GB5310 20GGB5310 20G putorino paipa rino, 20G kōhua paipa maitai, 20G kōhua paipa
Kohua paipa maitai Taupānga:
GB5310 20G te nuinga o nga putorino maitai e whakamahia ana mo nga oko pehanga, miihini, paipa paipa, hinu me te umanga matū.
Ko te paerewa GB 5310- 2008 e pa ana ki nga ngongo korekore mo te hanga korohu mamaoa he teitei, teitei ake ranei te pehanga me nga ngongo korekore hei paipa.
| Huānga matū | Raraunga |
| waro | 0.17-0.24 |
| Silicon | 0.17-0.37 |
| konupora | 0.70-1.00 |
| Phosphorus(mōrahi) | 0.03 |
| whanariki(mōrahi) | 0.03 |
| Chromium(mōrahi) | 0.25 |
| Molybdenum(mōrahi) | 0.15 |
| Cuprum(mōrahi) | 0.2 |
| Nika(mōrahi) | 0.25 |
| Vanadium(mōrahi) | 0.08 |
| Āhuatanga | Raraunga |
| Kaha Tuku (Mpa) | ≥415 |
| Te Kaha Tana (Mpa) | 240 |
| Whakaroa (%) | 22 |
| W.T.(S) | Whakaaetanga o W.T. | |
| <3.5 | +15%(+0.48mm min) | |
| -10%(+0.32mm min) | ||
| 3.5-20 | +15%,-10% | |
| >20 | D<219 | ±10% |
| D≥219 | +12.5%,-10% | |