Knowledge of steel pipe: Commonly used fittings of national standards

October 14, 2019

National standard GB12459 Butt Welded seamless steel pipe GB / T13401 Butt welded steel plate GB / T14383 Butt welded pipe fittings GB / T14626 forged steel threaded pipe GB9112-9131 Steel pipe flange, flange cover and method Blue gasket This message is provided by

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Appliance Accessory

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