Walchandnagar Industries Limited ( WIL ) Heavy Engineering Company along with our J V Partner, Aquatic company, Moscow introduced Aluminium Alloy Tubing in India and South East Asian countries. We use two types of ***** 16T and 1953T1. Our tubings have excellent strength to density ratio and corrosion resistance to hydrogen sulphide / carbon dioxide which are found in formation fluids. Approved test results of production tubings(given in a Table below) and photographs showing the rate of corrosion on steel and aluminum pipes are enclosed as Annexure I. While the steel tubings were totally corroded, aluminum pipes were virtually not affected at all. Alloy Alkaline Environment pH 11 (5%Na CI+ NaOH) Neutral Environment pH 11 (5%NaCI) Sour Environment pH 2, 5 (5%NaCI+0.5% CH3COOH) H2S to the Full Saturation D16T (1 gr) 0, 49 0, 01 0, 05 No Corrossion 1953T1(2gr) 0, 21 0, 02 0, 04 No Corrossion We are also enclosing a leaflet giving you the details of tubings presently under manufacture as Annexure II. Our tubings are supplied to API threads 2 7/8â?? E U. Tubings with other threads can be manufactured on order. We wish to register ourselves as an Approved Vendor for your future requirement of Aluminium Alloy Tubings. We request you to forward us the necessary documents required for registration.