IS 3717 : 1977 Refined secondary lead
UDC 669.448.5 | MTD 9 |
|
Reaffirmed 2019 |
1 Scope
1.1 This standard covers the requirements for three grades ofrefined secondary lead, namely, Grades 99.97, 99.9 and 99.8.
2 References
IS 2 :1960 Rules for rounding offnumerical values
IS 403 : 1964Methods of chemical analysis of lead and antimonial lead
IS 1387 : 1967General requirements for the supply of metallurgicalmaterials
IS 8439 : 1977Methods of sampling lead and lead alloys