unit 111 low carbon steel pipework Join and fix

Which statement best describes where low carbon steel (LCS) is mainly used?

• Commercial installations, and occasionally in domestic

• Only domestic installations

• Agricultural irrigation only

• Automotive body panels primarily

How many different grades of low carbon steel (LCS) are available?

• Two

• Three

• Four

• Five

Which LCS grade is most commonly used in plumbing installations?

• Light

• Medium

• Heavy

• Extra-heavy

All grades of low carbon steel pipe share which feature regarding dimensions?

• Identical external diameters

• Identical wall thickness

• Identical internal diameters

• Identical lengths

Which application is specifically noted as suitable for heavy grade LCS?

• Low-pressure water supply only

• High temperature and pressurised systems

• Decorative handrails

• Electrical conduit

Where is heavy grade LCS also used aside from long-life systems?

• Above ground exposed runs only

• Below ground pipe runs

• Only in temporary installations

• In flexible hose connections

Light grade LCS pipe is seldom used except in which scenarios? Select all that apply.

• Dry sprinkler installations for fire prevention

• High temperature systems

• Some gas supply runs

• Below ground pipe runs

Which two methods are commonly used to join smaller sizes of low carbon steel (LCS) pipework and fittings?

• Screwed

• Compression

• Welding

• Soldering

Screwed joints rely on which components to create a water-tight seal?

• Two parallel pipes with no threads

• Internal and external threads screwed together

• A welded bead around the joint

• A compression olive only

Which materials are normally added to the external thread of a screwed joint to secure a water-tight seal?

• PTFE tape

• Hemp and paste

• Flux

• Epoxy resin