DOWNLOADS AND PUBLICATIONS OSTP assists users and fabricators in the selection, installation, operation and maintenance of their stainless steel materials. Experienced technical personnel help customers make the material decisions that are both technically and economically sound. Below you will find a selection of downloadable catalogues and data sheets. Log in is required to tools, contact your local sales representative for more information! OSTP ALLOY ADJUSTMENT FACTOR The AAF is a charge for the alloys used (e.g. nickel, molybdenum) to produce the specific grade as this varies considerably according to the grade (and specific composition) that the customer has specified. LATEST AAF OSTP PRODUCT CATALOGUE Welded Stainless Steel Tubular products for every need OSTP CATALOGUE TUBULAR CAD SUPPORT CAD SUPPORT STEEL FINDER Find, browse and compare our steel grades online. READ MORE WORKING PRESSURE CALCULATIONS The weld factors used in the calculations below are according to our approvals from authorities. Internal vacuums are not taken into account in the calculations Log in required! PIPES AND TUBES Calculations according to EN 13480-3 or ASME B31:3 in all available dimensions and grades. ELBOWS TEES Calculations according to EN 13480-3 in all available dimensions and grades. REDUCERS WALL THICKNESS REDUCTION CALCULATIONS This tool shows potential savings in material consumption between different stainless steel grades and also possible savings when changing from ANSI dimensions to ISO dimensions. To use the tool you need to have an account and log in. READ MORE COMPARISON ISO / ANSI This tool shows potential savings in material consumption between different stainless steel grades and also possible savings when changing from ANSI dimensions to ISO dimensions. To use the tool you need to have an account and log in. READ MORE OSTP – A specialist in welded stainless steel tubular products. We produce welded tubes and pipes, butt welded fittings and process equipment for pressure corrosion application. Our customer’s needs are always at the center of our actions, decisions and developments. DATA PRIVACY POLICY OSTP 2021 © ALL RIGHTS RESERVED