Ductile iron pipes
1) The standard of pipe: ISO 2531 - 1998, EN545-2002 , K9
2) Effective length: 6M when using bulk shipment way and 40’ containers, or about 5.5M or 5.7M when in 20' container shipment way,
3) Inner cement line: Portland cement line 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, SBR rubber or EPDM rubber tightness ring as per ISO4633
7) DN 80 - 1,800 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

Ductile iron pipe
Ductile iron pipes
di pipe
DI pipes
雅思代考 北美SAT答案 Assignment代写 GMAT替考 北美托福答案