Ko te pūwero hau, e mōhiotia ana ko te oko pēhanga, ko te tāke rokiroki rānei, e whakamahia ana mō te penapena hau kōpeke, ā, ko āna mahi e whai ake nei:
◆ Penapenahia te hau kōpeke;
◆ Te pēhanga ārai, nā te piki me te heke o te pēhanga hau i tukuna ki te pūwero, i muri i te tango hau, ka pumau ake te hau kōpeke i te taha hau.
◆ Ringihia te wai, ka huri te mamaoa wai i te hau hei wai i muri i te pēhitanga e te pūwero, ka tau te nuinga o ēnei pata wai ki raro i te pūwero hau, ā, ka tukuna aunoatia, mā te takirere whakaheke rānei.
Tauira:C-0.3/8
"C" ko te tikanga he kaiwhiwhi hau;
"0.3" ko te kaha o0.3 M3;
"8" te tikanga o te mahi mōrahihe 8 pae te pēhanga.
Me rite te pēhanga o te hau e hiahiatia ana ki te pēhanga mahi a te pūwero, me tata te rahi o te rōrahi o te pūwero ki te 1/5-1/10 o te rere o te hau o te pūwero; he pono, mā te nui o te rōrahi o te pūwero hau ka nui ake te penapena o te hau e pēhia ana, ā, ka pai ake te tango i te wai.
Tāke hau waro maitai:
| TAUIRA | RŌKIRI M3 | PĒHANGA | DIA O ROTO. 1 | H WHĀNUI H1 | RAUEMI | RĀWAI HAUMARUTANGA ARA C | HONONGA ā |
| Pae | |||||||
| C-0.3/8 C-0.3/10 C-0.3/13 | 0.3 | 8 10 13 | 550 | 1589 1589 1593 | Q235-B Q235-B Q235-B | RP 1/2 | RP 1 1/2 / DN 50 |
| C-0.6/8 C-0.6/10 C-0.6/13 | 0.6 | 8 10 13 | 700 700 650 | 1900 1902 2068 | Q235-B Q235-B Q235-B | RP 1/2 | RP 1 1/2 / DN 50 |
| C-1/8 C-1/10 C-1/13 | 1 | 8 10 13 | 800 | 2205 2207 2205 | Q235-B Q235-B Q345R | RP 3/4 | RP 2 / DN 65 |
| C-1.5/8 C-1.5/10 C-1.5/13 | 1.5 | 8 10 13 | 1000 | 2265 2265 2817 | Q345R (16MnR) Q345R (16MnR) Q345R (16MnR) | RP 3/4 | RP 2 / DN 65 |
| C-2/8 C-2/10 C-2/13 | 2 | 8 10 13 | 1000 | 2780 2780 2782 | Q345R (16MnR) Q345R (16MnR) Q345R (16MnR) | RP 1 1/4 | RP 2 / DN 80 |
| C-2.5/8 C-2.5/10 C-2.5/13 | 2.5 | 8 10 13 | 1000 | 3300 3300 3302 | Q345R Q345R Q345R (16MnR) | RP 1 1/4 | DN 80 |
| C-3/8 C-3/10 C-3/13 | 3 | 8 10 13 | 1200 | 2880 2882 2372 | Q345R Q345R Q345R (16MnR) | RP 1 1/4 | DN 80 |
| C-4/8 C-4/10 C-4/13 | 4 | 8 10 13 | 1400 | 3030 3032 3036 | Q345R Q345R Q345R (16MnR) | RP 1 1/2 | DN 100 |
| C-5/8 C-5/10 C-5/13 | 5 | 8 10 13 | 1400 | 3630 3632 3636 | Q345R Q345R Q345R (16MnR) | RP 2 | DN 100 |
| C-6/8 C-6/10 C-6/13 | 6 | 8 10 13 | 1400 | 4230 4232 4236 | Q345R Q345R Q345R (16MnR) | RP 2 | DN 100 |
Kowiri tiratāke hau maitai:
| TAUIRA | RŌKIRI M3 | PĒHANGA | DIA O ROTO. ¢1 | H WHĀNUI H1 | RAUEMI | RĀWAI HAUMARUTANGA ARA C | HONONGA ā |
| Pae | |||||||
| C-0.3/8 C-0.3/10 C-0.3/13 | 0.3 | 8 10 13 | 600 | 1308 1308 1310 | S30408 | RP 3/4 | RP 1 1/2 |
| C-0.6/8 C-0.6/10 C-0.6/13 | 0.6 | 8 10 13 | 600 | 2058 2058 2060 | S30408 | RP 1/2 | RP 1 1/2 |
| C-1/8 C-1/10 C-1/13 | 1 | 8 10 13 | 800 | 2183 2185 2187 | S30408 | RP 1 | RP 1 1/2 / DN 65 |
| C-1.5/8 C-1.5/10 C-1.5/13 | 1.5 | 8 10 13 | 850 | 2689 2691 2693 | S30408 | RP 1 | RP 1 1/2 / DN 65 |
| C-2/8 C-2/10 C-2/13 | 2 | 8 10 13 | 1000 | 2770 2772 2774 | S30408 | RP 1 1/4 | RP 2 / DN 80 |
| C-2.5/8 C-2.5/10 C-2.5/13 | 2.5 | 8 10 13 | 1000 | 3270 3272 3274 | S30408 | RP 1 1/4 | DN 80 |
| C-3/8 C-3/10 C-3/13 | 3 | 8 10 13 | 1200 | 2865 2867 2871 | S30408 | RP 1 1/2 | DN 80 |
| C-4/8 C-4/10 C-4/13 | 4 | 8 10 13 | 1400 | 3022 3024 3028 | S30408 | RP 1 1/2 | DN 100 |
| C-5/8 C-5/10 C-5/13 | 5 | 8 10 13 | 1400 | 3522 3524 3528 | S30408 | RP 2 | DN 100 |
| C-6/8 C-6/10 C-6/13 | 6 | 8 10 13 | 1400 | 4022 4024 4028 | S30408 | RP 2 | DN 100 |
Tāke Korehau:
| TAUIRA | RŌKIRI M3 | PĒHANGA | DIA O ROTO. ¢1 | H WHĀNUI H1 | RAUEMI | TAUMAHA KGS | HONONGA ā |
| Pae | |||||||
| C-0.3/-1 | 0.3 | -1 | 550 | 1569 | Q235-B | 99 | RP 1 1/2 |
| C-0.5/-1 | 0.5 | -1 | 600 | 2035 | Q235-B | 167 | RP 1 1/2 |
| C-0.6/-1 | 0.6 | -1 | 700 | 1880 | Q235-B | 167 | RP 1 1/2 |
| C-1.0/-1 | 1.0 | -1 | 800 | 2180 | Q235-B | 263 | RP 1 1/2 |
| C-1.5/-1 | 1.5 | -1 | 900 | 2502 | Q235-B | 367 | RP 2 |
| C-2.0/-1 | 2.0 | -1 | 1000 | 2754 | Q235-B | 527 | RP 2 |
| C-2.5/-1 | 2.5 | -1 | 1000 | 3254 | Q235-B | 643 | RP 2 |
| C-3.0/-1 | 3.0 | -1 | 1200 | 2854 | Q235-B | 679 | DN 65 |
| C-4.0/-1 | 4.0 | -1 | 1400 | 3006 | Q345R | 913 | DN 65 |
| C-5.0/-1 | 5.0 | -1 | 1400 | 3606 | Q345R | 1076 | DN 65 |
| C-6.0/-1 | 6.0 | -1 | 1400 | 4206 | Q345R | 1240 | DN 65 |