Pressure grade: for hot-melt butt flange with dn<630mm, the maximum nominal pressure is 1.6MPa. For hot-melt butt flange with dn≥630mm, the maximum nominal pressure is 1.0MPa.
Executive standards: for PE butt flange of Donghong, national standards GB/T13663.2-2005 and GB 15558.2-2005 apply.
Specification and dimension: specification and dimension of PE butt flange meet the requirements in the table below