5. Apply pressure trough special roller slot machines, pipe sections should be kept level application GP steel pipe, pipe and roll-section 900 slot machines only when pressure trough. Pressure trough should continue progressive, groove depth shall comply with the requirements in the following table; and using the whole week standard gauge measuring the depth of the groove. Such as shallow trench GP steel pipe factory outlets, should be adjusted before grooving machine for processing. Standard depth of the trench and the tolerance (mm) diameter deep groove tolerance ≤80 2.20 +0.3 100 ---- 150 2.20 +0.3 200 ---- 250 2.50 +0.3 300 3.0 +0.5 4, when cut, not allowed to use high temperature process wheel speed cutters and gas cutting and cutting. When using wire cutting GP steel pipe set, only the first cut to 1/2 of the pipe wall thickness steel pipe maintenance GP and then handsaw sawing the tube. Generally not allowed to make this law, and the application of cutting handsaw. After cutting applications and other tools to remove the half-round rasp internal and external burrs. 5, can not bend by heating. When the dome tube cold bending application method, and the bending radius shall not be less than 6 times the diameter. GP steel pipe maintenance, GP steel pipe, pipe industry Jinling Jinling by Hebei Industry Corporation. Hebei Golden Link Pipe Industry Co., Ltd. (www.hbjinlingpipes.com/) strong, credible, Hengshui in Hebei chemical products industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Jinling Industry into the brilliant and you work for a better future!