Nga mahi mahi mo te tiki 304 paipa kowiri tira.
1. Kua rite te paipa
2. Te whakakore matū
(1) Ko te tango hinu matū ka whai i te tikanga rumaki i roto i te tank, a ko te tank tango hinu he mea hanga ki te pereti maitai, me te PVC, te polyethylene ranei i whakatakotoria ki te pakitara o roto.
(2) Te whakamahinga mo te maimoatanga matū 12-15% waikawa hauota (mā te rōrahi) i te pāmahana o 40 ℃ ki 60 ℃ mō 2-4 haora.
(3) I te ruku 304 paipa kowiri tira i roto i te tank, me aro nui ki te whakanoho kia kore ai e mahue te hau ki roto i nga paipa.
(4) I te wa o te ruku, me neke te ngongo ki runga, ki raro, me huri ranei, me whakakapi tonu te otinga o roto kia pai ake ai te painga. Mena e tika ana, tangohia te ngongo, horoia ki te wai me te hau, katahi ka whakamakuku.
(5) Te whakaheke matū kia makuku rawa te mata o nga taputapu paipa.
3. Te pupuhi wai wera
(1) Tangohia te 304 paipa parakore kowiri tira i muri i te tango hinu mai i te taika tango hinu ka ruku ki roto i te taika wai wera huri noa. 40 ℃~60 ℃ mo te horoi mo 5-20 meneti.
(2) Ko te tank wai wera he mea hanga ki te pereti maitai, ka hipokina te pakitara o roto ki te polyvinyl chloride, polyethylene ranei.
(3) The chloride ion content in water is less than 25ppm.
4. Rinse with water.
(1) Use pressure water (pressure P ≥ 0, 1Mpa) to rinse the pipes that have been washed with water.
(2) The chloride ion content in water is less than 25ppm.
5. Passivation
(1) Select the passivation solution formula and soaking time according to Tables 2 and 3.
(2) Produce passivation groove steel plates with acid resistant plastic on the inner walls.
(3) When soaking in the tank, pay attention to the placement to avoid air inside the tube.
(4) I te wa o te ruku, the pipe fittings should be moved up and down or flipped, me whakakapi tonu te otinga o roto kia pai ake ai te painga. Mena e tika ana, the pipes should be removed, washed with water and gas, and then soaked.
6. Drying
After passivating the 304 stainless steel sanitary pipe, dry it with clean compressed air or nitrogen, and there must be sufficient time (at least 2 haora) for natural passivation in the air.
7. Inspection
After passivation of 304 stainless steel sanitary pipes, self inspection and mutual inspection should be conducted, and then submitted to quality inspection personnel for acceptance as required.
8. Protection
(1) Ko nga taputapu paipa e hiahia ana kia peita i te mata o waho me peita kia rite ki nga whakaritenga peita.
(2) Ko nga paipa e haere ana i te tirotiro me hiri ki nga raima kirihou, takaia ki te kakahu tohu e toru hei whakamarumaru, me te tohu.