Historical
IAPMO IGC 257-2009a
Hinge type couplings used for joining hubless cast iron soil pipe and fittings
This standard covers physical requirements and tests in addition to general description of materials used. Certain features of construction and finish of the final product are also given together with the methods of marking and identification. The hinge type couplings covered by this standard are intended for use on hubless cast iron soil pipe and fittings.
CONTENT PROVIDER
International Association of Plumbing and Mechanical Officials [iapmo]
International Association of Plumbing and Mechanical Officials [iapmo]