Ihe ọkpọkọ: gụnyere: (Ihe ndị ahụ ga-abụ nha nhata, kọmpat ma nwee ike ịnyefe ultrasound) Carbon steel, igwe anaghị agba nchara, igwe nkedo, igwe ductile, ọla kọpa, PVC, aluminom, asbestos, fiberglass, ihe ndị ọzọ Liner: Enweghị liner, Tar Epoxy, Rubber, Mortar, Polypropylene, Polystryol, Polysty...
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