Description
This type of loose flange with welding neck collar manufactured by Hebei Hexin Pipe Fitting Co., Ltd. complies with the Chinese chemical industry standard HG/T20599-2009. It adopts high-quality carbon steel A105 as raw material, which features excellent strength and toughness. The main production processes include: cutting of A105 steel billets, heating and forging of flange rings and lap joints, heat treatment to optimize microstructural properties, precision machining to guarantee the dimensions of bolt holes, sealing surfaces and welding grooves of the short joints on flange rings, assembly of short joints and flange rings (usually loose connection), surface treatment such as anti-rust paint coating, and rigorous quality inspection.
Application Fields: It is especially suitable for occasions requiring frequent disassembly or pipelines made of expensive materials (such as stainless steel and non-ferrous metal pipelines). It is widely applied in pipeline systems of chemical, pharmaceutical, food, shipbuilding and other industries. Its loose structure facilitates alignment and installation.
Temperature and Pressure Resistance: With PN16 pressure rating, within the applicable temperature range of A105 material (generally approximately -29°C to 425°C), its maximum allowable working pressure decreases as temperature rises, and reference shall be made to the pressure-temperature rating table. Its working pressure can reach 16 bar at room temperature.
Advantages of Hebei Hexin Pipe Fitting: Professional production of various loose flanges with mature manufacturing technology; full-process quality control from raw materials to finished products; customized non-standard sizes and materials available according to customer requirements.
Production Specification Range: The nominal diameter ranges from DN15 to DN600. Pressure ratings cover PN6, PN10, PN16, PN25, PN40 and more. Sealing surface types include multiple combinations such as PJ/SE (flat face/raised face).
