This document is applicable to seamless tubing of circular cross-section made from titanium alloy and intended for use primarily in systems with system operating pressure of 35 MPa (5080 psi) (Pressure Class J), but usage is not limited to such applications.st edition 2017-04 Aerospace series — Titanium tube for 35 MPa operating pressure — Part 1: Inch series Série aérospatiale — Tubes en titane — Pression de service : 35 MPa — Partie 1: Série en inches Reference number ISO 18487-1:2017(E) ？ ISO 2017 ISO 18487-1:2017(E) COPYRIGHT PROTECTED DOCUMENT ？ ISO 2017, Published in Switzerland All rights reserved