Rectangular ASTM A 1011 30×100mm pitch commercial steel grating, is one of the normal size of steel gratings, another writing is 19W4. Rectangular ASTM A 1011 30×100mm pitch commercial steel grating is made by the world first-class equipment,which can arrange the bearing bar an

Hebei Jiuwang Metal Wire Mesh Co., Ltd      [2019-06-12 13:45:19 ]

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