Ko ngā papa parirau huihui, i te mōhiotia hoki e te ingoa o te papa huihui, ko te papa parirau e whai tapa ana i hangaia i te parirau reri ki te tahumaero, ki te tapawhā, me ētahi atu āhua, kātahi ka huihui tētahi papa parirau. Ko te rahi tūmatanui ko te 6 mita.
ERW WELDED PIPE kapa: Q235A, Q235C, Q235B, 16Mn, 20#, Q345.
Ngā taputapu hua tōrō: Q195-215; Q215-235
Ngā tātai arataki: GB/T3091-2015,GB/T14291-2016 ,GB/T12770-2012 ,GB/T12771-2019 , GB-T21835-2008
Te horopaki whakamahi: Ngā pūpahi wai, te ahumahi hinu, te ahumahi parakore, te hātepe hiko, te whakatere whenua, te hanga taone. Whakawehehia ki te mahi: neke huinga (mā te tuku wai, mā te tuku wai), neke hau (mā te hau, mā te hau, mā te LPG), mō te whakamahinga hanganga (mā te papa parirau, mā ngā wharepaku; mā te tiriti, mā te ara, mā te hanga whare).
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