The carbon steel tubes made by us are perfectly in accordance with the technical specifications provided by the client. These tees are highly durable and are used to connect two or three pipes together. All these tees are light in weight and are made of high quality carbon steel. Grades & Specifications: ASTM / ASME A 53 GR. A & B, ASTM A 106 GR. A, B & C. API 5L GR. B, API 5L X 42, X 46, X 52, X 60, X 65 & X 70. ASTM / ASME A 691 GRA, B & C