Dear Sirs,
Request to please share the following Latest API Standards

API Spec 20A :2015  Carbon Steel, Alloy Steel, Stainless Steel, and Nickel Base Alloy Castings for Use in the Petroleum and Natural Gas Industry
API Spec 20B :2013  Open Die Shaped Forgings for Use in the Petroleum and Natural Gas Industry
API Spec 20C : 2015 Closed Die Forgings for Use in the Petroleum and Natural Gas Industry
API Spec 20E  Alloy and Carbon Steel Bolting for Use in the Petroleum and Natural Gas Industries
Spec 20F  Corrosion Resistant Bolting for Use in the Petroleum and Natural Gas Industries