This part of GB/T 19317 stipulates the requirements for the parts clearly used as inlet and outlet pipelines and metal penetrating hull accessories, sea cocks and hose accessories for wet exhaust ports on small boats with a hull length not greater than 24m. Require. This section does not deal with accessories that penetrate the hull for other purposes. This part applies to sea cocks and through-hull fittings with cylindrical pipe threads conforming to ISO 228-1 and with conical pipe thread connections conforming to ISO 7-1, of nominal diameters 1/4 in, 3/8 in, 1/2 in, 3/4 in, 1 in, 1 1/4 in, 1 1/2 in, 2 in, 2 1/2 in, 3 in or 4 in.
GB/T 19317.1-2003 history
2003GB/T 19317.1-2003 Small craft--Seacocks and through-hull fittings--Part 1: Metallic