Shijiazhuang Jizhong Malleable Iron Co.,Ltd.is a professional black malleable iron pipe fittings manufacturer.Malleable iron pipe fittings, also known as welded steel pipe or galvanized welded steel pipe, are welded pipe and galvanized welded steel pipe used in threaded connections. The thread is made of 55 ° conical pipe thread, the size of 1 / 8in to 6in. Common specifications for pipe installation are 1 / 2in, 1 / 4in, 1in, 11 / 4in, 11 / 2in, 2in, 21 / 2in, 3in, 4in (less used for 5 ~ 6in) Nominal pressure is 1.6MPa, Working temperature does not exceed 200 ℃.
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