CHEUNG HING FOUNDRY/Type Test for BS437 : 1978 Cast iron spigot and socket drain pipes and fittings



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Type tests for BS 437 : 1978 Cast iron spigot and socket drain pipes and fittings

Items to be tested	Number of samples

Materials
Tensile strength	Reference to BS1452

Pipe	Range of DN (75, 100, 150, 225)
Dimensions (thickness & length)	1 per DN
Hydrostatic test	1 per DN
Crushing test	1 per DN

Fitting	Range of DN (75, 100, 150, 200, 225, 250, 300, 350, 375, 400, 450, 500, 600, 700)
Dimension (length & angle of fitting)	1 per DN per type - 5 types including bend, reducer, socket, tee and trap (or anti-siphon trap)
Depth of trap seal	1 per DN
Hydrostatic test	1 per DN per type - 5 types including bend, reducer, socket, tee and trap (or anti-siphon trap)

Coating	Bitumen test to BS 3416

Materials