Unit Weight of M.S. Sheets

Dear Readers,

We are very often use the sheets and plates during construction activities. Sheet metal and plate metal are different forms of steel. The most notable difference between plate and sheet metal is the thickness of the products. Plate metal is thicker when compared to sheet metal.

In general thickness less then 5.99 mm is called sheet and more than 6 mm is called plates. Sheets can be measured in SWG or in mm (millimeter). Unit weight of Sheets is as follows.

Sheet metal is produced on an industrial scale by applying rolling, processing and drying techniques. Eventually it is the process of rolling that will decide whether a particular metal will be classified as sheet or plate. Rolling metal adds pressure which determines the overall thickness of the metal. If the metal is rolled thin then it is considered to be sheet and if it is thick then the metal can be classified as plate.

Weight of Pipes

 Dear Readers,

In continuation with my earlier post " Difference between Pipes & Tubes" , let us note the unit weight of Pipes, wall thickness and further details.

Pipes are specified based on the schedules. Normally we mention pipes as Standard pipes, Extra Strong, Double extra strong based on the applications and utilization purpose. However further it also classified technically on Schedules, subject to the wall thickness , These schedules starts from Schedule-10, Schedule-20, Schedule- 30 , Schedule-40, Schedule-60, Schedule-80, Schedule-100, Schedule-120, Schedule-140 & Schedule-160

Below Table shows the weights of Standard pipes, Extra Strong & Double strong. Theses are readily available in market.

Above table Wall thickness are mentioned in "mm" & Weights are in "Kg/Meter".

For More Details about unit weight of Tubes Click Here 

For Difference between Tube and Pipe Click Here

Type of Bolts

Dear Readers,

Some of the most commonly used bolts are illustrated below: This would be very useful for all construction engineers.

Hexagonal-headed bolt

This is the most common form of a bolt and is used for general fasting purposes. The hexagonal head is chamfered at its upper end. 

To prevent rotation of the bolt while screwing the nut on or off, the bolt-head is held by another spanner. A hexagonal-headed bolt illustrated in the figure. It is used for Construction and machinery applications.

Square-Headed Bolt

This bolt is commonly used when the head is to be accommodated in a recess. This recess is made of square shape so that the bolt is prevented from turning when the nut is screwed on or off.

When a square-headed bolt is to be used with its head projection outside, it is provided with a neck of square cross-section. This prevents rotation of the bolt. This bolt is commonly used in bearings for the shaft. A square-headed bolt is shown in the figure. 

Cylindrical or Cheese-Headed Bolt

This type of bolt is used where projecting corners are unacceptable, and where the space for arranging the bolt-head is relatively limited. The rotation of the bolt is prevented by means of a pin inserted into the shank just below the head.

The projecting part of this pin fits into a corresponding groove in the adjacent piece. This bolt is commonly used in big ends of connectors, eccentrics, etc.

Cup-Headed or Round-Headed Bolt

This bolt is used when projecting is undesirable and where better appearance is required.

It is usually provided with a sung forged on the shank just below the head, as shown in the figure. To prevent rotation of the bolt. This bolt is it used in the construction of tanks, certain parts of locomotives and Wooden works.

T-Headed Bolt

This type of bolt is used for securing clamps, vices, and other accessories to the tables of machine tools.

The tables are provided with T-slots to accommodate the T-heads. The neck of this bolt is usually square in section to prevent rotation of the bolt. T-bolt is shown in the figure.

Countersunk-Headed Bolt

This form of a bolt is used where the head of the bolt must not project above the surface of the connection piece.

It may be provided with a snack or a neck to prevent rotation of the bolt.

For More Information about Grade of Bolt Click Here

For More Information about Weight of Hex Bolt & Nut Here