Water Supply Di Pipe

Water supply di pipe Specifications: 1) The standard of pipe: ISO 2531 - 1998, EN545-2002, K9 2) Effective length: 6M when using bulk shipment way, or about 5.5M or 5.7M when In 20' container shipment way 3) Inner cement line: Portland cement lining as per ISO4179 4) Zinc coating: At least 130GSM as per ISO 8179 5) Bitumen painting: At least 70um as per ISO 8179 6) Gaskets are NBR rubber, natural rubber, SBR rubber or EPDM rubber Tightness ring as per ISO4633 7) DN 80 - 1, 200 mm 8) High strength, lighter than gray iron, good corrosion resistance, no furring, Small flow resistance, easy fixing, long life time 9) Checked by automatic inspection equipment 10) Composition: A) C: 3.4 - 3.7% B) Si: 2.0 - 2.4% C) P: <0.08% D) S: <0.015 11) Pull strength: >420MPa 12) Yield: >10% 13) Hardness: <230HB 14) Process and testing: A) Blast furnace (Analysis of raw materials test ) B) Mg treatment (Micro & chemical composition test) C) Pipe spinning (Temperature test) D) Heat treatment (Micro structure; Flattening test) E) Zinc coating (Thickness testing) F) Dimensional checks (Thickness & Dia. Testing) G) Hydraulic test (Pressure test) H) Internal lining (Thickness testing) I) External coating (Thickness test) Packing: In bulk or container