The poly steel fittings are made of malleable cast iron fittings
and lined with propylene (PP) via injection machine with outside epoxy coating, used to connect with poly steel pipe by thread.
The working pressure is up to 1.6Mpa and size available is from 1/2"(15mm) to 4"(100mm).
Specification: BS EN 10241:2000, BS EN10226-1:2004, BS EN10242, BS143&1256   JWWA K116:1987, JPF MP003-2003, JPF MP005-2004, CJ/T137-2008