IGN 4-12-01 Issue 4 March 1991 Precast concrete pipes – unreinforced and reinforced, with flexible joints | Water UK Standards Board

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IGN 4-12-01 Issue 4 March 1991 Precast concrete pipes – unreinforced and reinforced, with flexible joints

Issue: March 1991 Code: 4-12-01 Status: Ageing

IGN 4-12-01 Issue 3 February 1988 Precast concrete pipes -unreinforced and reinforced

Issue: February 1988 Code: 4-12-01 Status: Archived

IGN 4-12-02 Issue 2 September 1982 Glass fibre strengthened concrete pipes

Issue: September 1982 Code: 4-12-02 Status: Archived

IGN 4-12-03 Issue 2 October 1986 Asbestos-cement pipes and fittings

Issue: October 1986 Code: 4-12-03 Status: Archived

WIS 4-12-04 Issue 1 April 1986 Specification for glass fibre reinforced cement (GRC) sewer linings

Issue: April 1986 Code: 4-12-04 Status: Archived

IGN 4-12-05 Issue 1 April 1986 Specification for precast gunite sewer linings

Issue: April 1986 Code: 4-12-05 Status: Archived

WIS 4-12-06 Issue 1 January 1990 Specification for Precast and Insitu Ferrocement

Issue: January 1990 Code: 4-12-06 Status: Archived

WIS 4-13-01 Issue 1 March 1991 Specification for blast furnace slag cement for in situ lining of water mains

Issue: March 1991 Code: 4-13-01 Status: Archived

IGN 4-21-01 Issue 3 July 1994 Ductile iron pipes and fittings

Issue: July 1994 Code: 4-21-01 Status: Archived

IGN 4-21-01 Issue 2 March 1990 Ductile iron pipes and fittings

Issue: March 1990 Code: 4-21-01 Status: Ageing