What is BS 6956-5 - Specification for jointing compounds about?
BS 6956 is a series on jointing materials and compounds. Jointing materials and compounds are the white matter comparable to plaster that is applied in order to seal joints that exist between drywall sheets. BS 6956-5 specifies requirements for the physical and sealing properties of jointing compounds for use with water, low pressure saturated steam, 1st family gases (excluding coal gas) and 2nd family gases.
The jointing compound is for use with screwed joints on pipework up to 50 mm nominal bore with threads up to R2 as specified in BS 21 and for use with the following:
- Coldwater up to a working pressure of 7 bar2) (gauge)
- Hot water up to a working pressure of 7 bar (gauge) and a working temperature of up to 100 °C
- 1st (excluding coal-based) and 2nd family gases up to a working pressure of 7 bar (gauge) and a working temperature of up to 150 °C
- Low pressure saturated steam up to a working pressure of 7 bar (gauge)
Who is BS 6956-5 - Specification for jointing compounds for?
BS 6956-5 on the specification for jointing compounds is useful for:
- Joining compound manufacturers
- Design engineers
- Quality control personnel
Why should you use BS 6956-5 - Specification for jointing compounds?
These compounds are mainly used in the construction of buildings. These compounds come in various forms such as lightweight, setting, and all-purpose. The jointing compound shall be free from lumps and shall have wetting properties necessary for adhesion to metallic surfaces. The solids used in its manufacture are thoroughly ground and the jointing compound is in such a condition that stirring will produce a smooth uniform substance.
When tested in accordance with the methods described in BS 6956-5, the jointing compound does not disintegrate or flow out of the joint made, does not permit any leakage during testing, and does permit dismantling of the joints. Upon completion of the tests, no damage including corrosion of the metal parts shall be evident. Using BS 6956-5 you can specify requirements for the physical and sealing properties of jointing compounds for use with water, low pressure saturated steam, 1st family gases (excluding coal gas) and 2nd family gases.