How To Calculate The Size Of The Head And Cut The Material

There are two ways to calculate the size of the material:

1. Use the ink fountain to draw a straight line, make a vertical line through the straight line, use a ruler to measure the diameter of the large mouth, then make a parallel line with reference to this straight line and measure the diameter of the small mouth, and make a straight line through the large and small mouth diameters and intersect the axis to get the radius of the sector.

2. The oblique length of the cone can be calculated by measuring the diameter and height of the large and small mouths, and then the angle of the sector can be calculated according to the radius and arc length of the sector, and then the tangent length can be calculated according to the angle and radius. Finally, the tangent can be divided into several equal parts according to actual needs, and the size of the points from different equal parts to the tangent can be calculated, and then connected one by one.

Standard system of large and small heads:

There are two main systems of Stainless Steel Flange standards in the world, namely the European pipe flange system represented by German DIN (including the former Soviet Union) and the American pipe flange system represented by American ANSI pipe flange.

In addition, there are Japanese JIS pipe flanges, but they are generally only used for public works in petrochemical plants, and have little influence internationally.

Classification of big and small heads:

1. Classification by material: carbon steel, alloy, stainless steel, low temperature steel, high performance steel, cast steel, alloy steel, stainless steel, copper, aluminum alloy, plastic, argon asphalt PVC, PPR, RFPP (reinforced polypropylene), etc.

2. Classification by production method: can be divided into pushing, pressing, forging, casting, etc.

3. Classification by manufacturing standards: can be divided into national standards, electrical standards, ship standards, chemical standards, water standards, American standards, German standards, Japanese standards, Russian standards, etc.