Do you know the process of pipe and flange connection?

The connection of flange and pipe is very important.We need to pay attention to the following points:

First,the assembly and connection of flanges and pipes.

The quality of the flange and pipe assembly not only affects the strength and density of the pipe connection,but also affects the inclination of the entire pipeline.Therefore,the flange must be fitted to the pipe to meet the following basic requirements.

• a) The center of the flange should be on the same line as the center of the pipe.
• b) The flange sealing surface should be perpendicular to the center of the pipe.
• c) The position of the flange screw holes on the pipe should correspond to the position of the flange screw holes on the matching equipment or fittings. The positions of the screw holes of the flanges at the two ends of the same pipe should be consistent.

Haihao Group specializes in the production of customized pipeline products

Assembly of flat welding flange and pipe

When assembling a flat welding flange to a pipe, first insert the flange into the pipe end. There should be a certain distance between the nozzle and the sealing surface of the flange, which is generally 1.5 times the thickness of the pipe wall. Spot welding is performed on one side, and then, on the opposite side of the spot welding, a flange bender or square ruler on the opposite of the spot welding. After aligning it, spot welding on the bend ruler. Rotate the tube by a 90 ° angle so that the spot welding position is at the top and bottom. At this time, use a curved ruler to find the right side of the tube. It can be spot welded on the left and right sides, and only the outer mouth is welded when PN < 1.6Mpa . Internal and external welding can be performed when PN ≥ 1.6Mpa .

Please see the pictures below, some photos of our company’s supply to Oman Oil Company 2. Butt welding flange and pipe assembly

Butt welding flanges and pipes are assembled using butt welding. Welding methods and requirements are the same as those for pipe welding.

Our company, Hebei Haihao Group,can provide professional welding technology. If you need related types of products,please contact us. Email:sales@haihaogroup.com