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Plumbing Phase 2 module 1 > Mild Steel Pipe > Flashcards

Flashcards in Mild Steel Pipe Deck (22)
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How would you identify mild steel pipe?

You identify mild steel pipe if it's red black or galvanised.

1

What is mild steel pipe used for?

It is used for hot water heating systems and gas supplies

2

Can it be used for mains water?

No because it would soon become liable too corrosion problems

3

How is it joined?

It can be joined n 3 ways welding threading or using victualic joints

4

Can you use galvanise for mains water? Why?

No because if fresh water is continuously being drawn off through the pipeline causing corrosion problems

5

What precautions should be taken place when galvanise welding?

Clear area of flamables
Work in a ventilated area
Don't smoke around any weld

6

Name 3 grades of mild steel pipe??

Medium grade
Heavy grade
Schedule 40&80

7

What is medium grade suitable for?

Medium grade is suitable for low pressure hot water and heating systems and gas installations

8

What is heavy grade suitable for?

Heavy grade is suitable for high pressure hot water and heating installations and acetylene gas and steam installations.

9

Explain the term BSPT?

A BSPT is a British standard pipe thread. It is formed at the end of the pipe.

10

Is a BSPT tapered or not?

Yes it is a tapered thread which tightens as it screws together

11

What gap is left when welding a 1" piece?

A 3mm gap is left when welding a 1" piece

12

What flame is used when welding a 1"piece?

A neutral flame is used when welding a 1" piece

13

Where are victualic joints used?

Victaulic joints are used to fabricate fire systems or large bore cold distribution systems.

14

Why would you use a 3 wheel pipe cutters?

A 3 wheel pipe cutters would be used when a full revolution is not possible

15

Is steel an alloy?

Yes steel is an alloy

16

What is steel made from?

Steel is made from iron and carbom. it is integrated

17

Where are flanges used?

Flanges are used where large valves or controls have too be replaced

18

Name 2 gaskets for sealing a flange?

spiral wound gasket
CAF gasket

19

How are Flanges tightened?

The nuts should be turned one revolution at a time.

20

List 3 ways of joining mild steel pipe?

welding
threading
victaulic jointed

21

If hanging two pipes from ceiling one below the other what is the name of clips used?

A double split munzing ring