High quality PP insulation pipe for drainage system

High quality PP Silent drainage pipes and fittings Product features Super Silent drainage products has advantages of lightweight,non-toxic, flame retardant, corrosion resistance, aging resistance and high resistance performance. 1.Excellent soundproof performance: by adding special sound proof material to absorb sound waves and prevent sound spread, noise reduction is much better than case iron & UPVC drainage pipe. 2. Super anti corrosion: Inner tube can resist acid up to