1. Ang oil slotted pipe ay pinoproseso ng J55 o N80 oil casing body, na may mataas na lakas at hindi madaling ma-deform 2. Maganda ang verticality ng cutting edge, makinis ang cutting edge, walang burr, at cutting seam ay pantay.3. Malaking flow area, 27/8″ slotted pipe na may 300 slots/1.5m...
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