I tētahi wāhi kaupapa tiaki wai i Laos, i hokona motuhaketia e te kiritaki ngā takirere pūrerehua me ngā hononga whānui rapa mō te huihuinga paipa, ā, i puta he hapa o ngā taputapu i muri i te hanganga. I hokona motuhaketia e te kiritaki ngā takirere pūrerehua me ngā hononga whānui DN300, me te tuku ota i runga i te diameter ingoa anake. I te korenga o te kōrero ki ngā tohunga hangarau hei manatoko i ngā āhuatanga hanganga o ngā hua, i warewarehia e te kiritaki te rerekētanga o roto o ēnei momo hua e rua.

I muri i te tāutanga me te whakatūnga, i kitea ko te diameter o roto o tēnei hononga whānui DN300 he iti ake i te ara o roto o te takirere pūrerehua me te rahi ingoa ōrite. Ina huri te kōpae takirere pūrerehua, ka āraia e te tauranga o te hononga whānui. Kāore e taea e te kōpae takirere te whakatuwhera katoa, nō reira kāore e taea te whakamahi i te pūnaha paipa ki te mahi noa.

Nā Jinbin Valve i whakarato te mahere mahi anō i muri mai: tangohia te takirere pūrerehua taketake, ka whakakapia ki tētahi takirere pūrerehua flange e hototahi ana ki tēnei hononga whānui. E ai ki te roa hanganga o te takirere pūrerehua hou, tapahia, ka whakatikatika i te paipa kei te papaanga hei whakatikatika anō, kātahi ka whakaoti i te mahi whakakī flange i waenga i te hononga whānui me te takirere hou. Kei roto i te tukanga mahi anō katoa te tapahi paipa, te tango i ngā wāhanga tawhito, te whakanoho takirere hou, te pokapū flange me te tirotiro hiri. He mahi roa, he mahi nui hoki tēnei tukanga, ka nui ake ngā utu mō te mahi, ngā rauemi me te wā hanga, ā, ka whakaroa tika i te ahunga whakamua o te kaupapa.

He whakamahara nui tēnei mō ngā hoko hangarau o tāwāhi. I te wā e whiriwhiri ana i ngā takirere paipa me ngā hononga whānui e ōrite ana, kaua ngā kaihoko e whiriwhiri me te hoko hua mā te rahi DN ingoa anake. He rerekē ngā takirere o ngā hanganga rerekē (ngā takirere pūrerehua lug, ngā takirere pūrerehua flange) me ngā hononga whānui i roto i te poka o roto, te hanganga mata pito me te roa tāutanga ahakoa he rite te diameter ingoa.

Mō ngā hoko hangarau o tāwāhi, me tuku e ngā kaipupuri kaupapa ngā tawhā āhua mahi tae atu ki ngā whakatakotoranga paipa, te reo, te pēhanga mahi me te wāhi tāutanga ki ngā miihini hangarau o ngā kaihanga takirere i mua i te wā. Me whakaoti e ngā tohunga ngaio te whiriwhiri momo kotahi me te taurite. Kaua e hoko motuhake i ngā takirere me ngā taputapu paipa, ā, kaua e huihui noa i te wāhi. Mā te hoko motuhake me te huihuinga matapo ka ngāwari te arahi ki te pokanoa o te poka, te pakaru o te hiri, te aukati i te kōpae takirere me ētahi atu hapa, ka hua ake he mahi anō me te moumou taima me te utu o te kaupapa. Ko te whakawhitiwhiti kōrero hangarau ngaio i mua i te kaupapa te mea nui ki te whakarite i te tāutanga pumau me te tono maeneene o tō pūnaha paipa.

Hei kaihanga takirere me te 22 tau o te wheako, ka hangaia e Jinbin Valve ngā takirere whakarewa me ngā takirere hangarau tiaki wai. He rōpū hangarau ngaio ā mātou, ka whakarite mātou i ngā takirere kia rite ki ngā āhuatanga mahi o te papaanga, ā, ka tukuna ngā otinga tino pai mō ngā kiritaki o te ao. Mēnā he hiahia āu, whakapā mai ki a mātou i raro nei. Ka whiwhi whakautu koe i roto i ngā haora 24. Kei te tumanako mātou ki te mahi tahi me koe.