Answer / udaya17

seemless tubes are made by stainless steel composites

Answer / murali

made by extrusion of steel billets

Answer / ferozh

they are made by piercing the steel tube and rolling simultaneously, in order to get the hollow tube. they are also produced by cold extrusion techniques.

Answer / souren roy

piercing...

Answer / vijay kumar

Seam less tube are made by piercing and also (extrusion-if long pipe and high pressure required)

what is the last range of mccb in amp?

2 Answers  

what type of motor used to move a 1 ton gate? and relate ratings with load.

0 Answers   Khidmah,

What is Procedure the procedure to select CT's & PT's in 66kV and above substation?

3 Answers   Infotech, Vijai Electricals,

Main CT ration is 400/5, meter CT ratio is open type: -/5A. What is the Multiplying factor of the meter, considering same PT ratio.

1 Answers  

According to underground cables a) stress b/w sheath & conductor is high b) inrush of core & conductor

0 Answers   CDS, Engineers India Limited, TNQ,

How to design the NGR Resistance

0 Answers  

what is mean by unity power factor?why are u calling Resistivity load also unity power factor?

2 Answers  

what the purpose of data retrivala panel in substation

1 Answers   NCC,

why battery is connected in series?

10 Answers   HP,

tan delta equation test on alternators

0 Answers  

difference between buscoupler & bussection?

1 Answers  

Why indicated only R.Y.B to phase.

6 Answers   Bhel,