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Connection Mode Of Hot-dip Galvanized Steel Pipe
- Feb 27, 2018 -

★Slot mode connection

1、weld seam cracking

●the inner wall of the inner wall of the pressure groove part of the pipe mouth is smoothed and the roll groove resistance is reduced.

●adjust the axle center of the steel pipe and groove equipment, and demand the level of the steel pipe and the rolling groove equipment.

●adjust the speed of the groove, the length of the groove can not exceed the regulation, uniform and slow force.


2、fracture of steel tube in groove

●The inner wall of the inner wall of the inner wall of the pipe groove is smooth and the resistance of the rolling groove is reduced.

●adjust the axle center of the steel pipe and groove equipment, and require the level of the steel pipe and the rolling groove equipment.

●adjust the speed of the groove, the speed of the groove can not exceed the regulation, uniform and slow force.

●check the width and type of the support roll and the pressure roller, whether there is no match between the two roll size, and cause the occlusal phenomenon.

●Check the groove of the steel tube with the vernier caliper.


3、the rolling grooves of rolling machine rolling should conform to the following requirements

● the surface of the pipe end to the groove should be flat without concave convex, no roll mark.

● the groove center should be concentric with the tube wall, the width and depth of the groove should be in accordance with the requirements, and check whether the type of the clamp is correct.

●Apply lubricant on the rubber seal and check whether the rubber seal is damaged, and the lubricant should not be used as oil lubricant.


★Welding connection

1. The problem that the pipe mouth of galvanized steel pipe is not in a straight line and steel pipe has a slanting mouth. It is suggested that the pipe head be cut off a small section and then be processed.

2, galvanized steel pipe nozzle after docking two nozzle orifice lax phenomenon, resulting in weld thickness is not uniform; and pipe due to its own reasons or transport bump, resulting in nozzle oval, it is recommended to cut a short steel pipe pipe after the child Processed again.

3, galvanized steel pipe butt after the orifice of a hole:

4. The cause of welding is due to technical reasons.

5, the nozzle zinc tumor, resulting in the difficulties and problems of welding of zinc trachoma, tumor of large, multi simple zinc tumor removal treatment.


★Wire connection

1, screw hoop contact, completely arbitrary deduction: screw threads and not loose, cutting off the chaos buckle part, re threading installation.

2, steel pipes and pipe hoop threads do not match, can not be connected, should replace or adjust equipment re threading pipe hoop.

3, pipe threading after stencil: measuring the thickness of steel tube can be achieved if the car standard thickness of wire tube



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