As with most jobs, salaries vary by location and experience. The  average salary in the US for pipeline welders in 2014 is $64,778;  the average (for the same time period) i â¦ n San Francisco is $74,857.  [source link attached]. + 2 others found this useful.he  average salary in the US for pipeline welders in 2014 is $64,778;  the average (for the same time period) i â¦ n San Francisco is $74,857.
Certainly more than 30 percent of Limaâs population lives in slums; two slums alone contain more than 3 million people, San Juan and Cono Sur (Davis, Planet of Slums).
Largest Cities in Peru. The largest city in Peru is its capital city, Lima. It is home to more than a quarter of Peruvians and the country's largest city by far with a population of more than 8 million. The city of Lima proper is, according to the 2007 census, home to 7,605,742 people.