Links

• swid.maj.ir
• Iranian Association of PE Pipe & Fitting Producers
• Amirkabir university
• Tehran university
• Iran Polymer and Petrochemical Institute
• Plastics Pipe Institute
• HDPEapp - PPI Calculator
• Plastic Pressure Pipe Design Calculator
• Plastics Pipe Institute
• Iranian National Standards Organization
• tpww
• Ministry of Energy Water Research Institute
• National Petrochemical Company
• ASTM International - Standards Worldwide
• ISO - International Organization for Standardization