... Degree Electrofusion Elbow 1.Standard:GB15558.2 Pren12201-3, Pren 1555-4 2. Certification: CE ISO9001:2000, ... pipe fittings,Mainly for gas, water and drain outlet. We use two-time injection mould forming, ... /PE80,SDR11 /SDR172. Used in gas ,water , drain outlet3. Certification: ISO9001:2000, GMC Certificate approval by ... EN1555-3, EN12201-3. GB15558.2,GB13663.2 hdpe pipe fittings electrofusion elbow