Swg pipes

Pipes & tubes are basically hollow bar,the diffrentiaition is mainly depending on its end use,& its dimension designation.
- Tubes are usually thin walled sections. Their wall thickness ranges from 0.3mm to 12.7 mm. The wall thickness are specified in Gauges as BWGSWG. Pipes have range of wall thickness from 2mm to 65mm.
- Tubes are numerically identical to the size of their ODs. The wall thickness specified in Gauges as BWGSWG. For example, a ¾ inch tube has OD, which is equal to
¾ x 25.4 = 19.05mm which is equivalent to the size of its designation.
- Where as Pipe dimensions have Outer Diameter that is numerically larger than the designated size. For example, a 4-inch NB, the OD is not equal to
4 x 25.4 = 101.6mm BUT its equal to 4.5x25.4=114.3mm
- Tubes can also be easily coiled but the thickness and rigidity of the pipes makes them harder to bend.
- Tubes can be used to connect parts of machines such as Heat exchangers, condensers and as a result are subjected to both internal and external pressures. Pipes are generally used to connect large machines to other large machines and are generally not subjected to external pressures.