How to calculate the pipe welding cuff

2021-11-18
How to calculate the pipe welding cuff
A weld with a pipe diameter of DN25 is considered to be 1 inch, and the others are analogized.
 
Standard Formula for Welding
1. First, according to the pipe diameter (nominal diameter DN), convert the pipe into inches. For example: Φ914 pipe, converted to: 914÷25.4=35.98≈36 inches Φ508 pipe, converted to: 508÷25.4=20 inches
2. Taking the pipe wall thickness of 10mm as the benchmark, when the wall thickness is greater than 10mm, when the thickness increases by 2mm, a factor of 0.1 is added in the calculation. When the wall thickness is less than 10mm, it is calculated as 10mm. For example: Φ914*28 pipe, thickness If it is 28mm, the calculated increase factor is 0.9.
3. The statistical calculation method of the process pipeline inch opening multiply the value of the pipe converted inch by (1+increasing factor), such as: Φ914*28 pipe, the number of converted inch openings per weld is: 36*(1+0.9)=68.4.Φ508*16 For the pipe, the number of inches per weld is: 20*(1+0.3)=26. The number of pipe inches divided by 8 is multiplied by the wall thickness
 
How to calculate the inch of chemical pipeline installation
That is, the workload is counted according to the number of welds.
Cun mouth refers to the welding mouth diameter folded into inches, different sizes of welding mouths have different workloads, such as 4", 2", 8", etc., the elbow has 2 welding ports, the tee has 3 welding ports, and the flange has 1 Welding joints, etc., so that the workload can be estimated by the number of accessories. The tube can be folded into the number of welds according to the length, which is convenient for calculation.
 
How to calculate the pipe welding cuff
Round=1.57*r*diameter*3.14; square=1.57*r*square mouth circumference. Experience summary. Easy to use
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