... ducts, PE fuel gas, etc. 2.Details: Name:PE electric-melting 90 degree elbowSpecificationOutside diameter(mm):200,250,315,355,400 ... ,450,500.Use:water,gas, fuel supplyColorBlack or customer's favorStandardISO/DNMaterialHDPELifetimeOver 50 ... Aton " Delivery time30-40 daysPackingCartons3.Photos:4.Certificates: PE electric-melting 90 degree elbow