1.
Non-return valve also known as?
2.
What is radius of short radius elbow?
3.
Which size onwards NB of pipe is equal to OD of pipe?
4.
What is Cloud marking in isometric indicates?
5.
We generally cut threads on GI pipes by which method?
6.
What is the most commonly used material for Gasket?
7.
What is minimum distance maintained between two weld joints?
9.
How can flanges be classified based on face finish?
10.
what is full form of IBR in piping?
11.
Stainless steel is known as acid proof steel, what is the grade?
12.
By using following fitting we use to make branch joint at right angle with respect to main line is?
13.
Valve is used in a piping system for:
14.
What is Maximum pressure rating of flange?
15.
Arithmetic Average Rough Height (AARH) is measurement for :
16.
Which is not a flange classification according to flange facing?
17.
Which type of 90 degree Elbow is generally used in piping
18.
Weld joint type of WNRF flange is?
19.
In the following given options which is not a permanent wielding connection?
21.
Which of the following is used to block up the pipe on one end?
