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ISO, the International Organization for Standardization

ISO (International Organization for Standardization) is the world’s largest developer of voluntary International Standards. International Standards give state of the art specifications for products, services and good practice, helping to make industry more efficient and effective. Developed through global consensus, they help to break down barriers to international trade.

What we do

ISO develops International Standards. We were founded in 1947, and since then have published more than 19 000 International Standards covering almost all aspects of technology and business. From food safety to computers, and agriculture to healthcare, ISO International Standards impact all our lives.

Story of ISO

The ISO story began in 1946 when delegates from 25 countries met at the Institute of Civil Engineers in London and decided to create a new international organization ‘to facilitate the international coordination and unification of industrial standards’. In February 1947 the new organisation, ISO, officially began operations.
Since then,we have published over 19 000 International Standards covering almost all aspects of technology and manufacturing.
Today we have members from 164 countries and 3 335 technical bodies to take care of standard development. More than 150 people work full time for ISO’s Central Secretariat in Geneva, Switzerland.

Who develops ISO standards?

ISO standards are developed by groups of experts, within technical committees (TCs). TCs are made up of representatives of industry, NGOs, governments and other stakeholders, who are put forward by ISO’s members. Each TC deals with a different subject, for example there are TCs focusing on screw threads, shipping technology, food products and many, many more.
ISO has over 250 technical committees. Details of the technical committees and links to the secretariat and chairman contact details can be found in the list of technical committees.
Searching the list of technical committees is one way to find out which subjects or sectors are the focus of ISO’s technical work.
ISO’s full members (member bodies) can decide if they would like to be a participating member (P-member) of a particular TC or an observing member (O-member). P-members participate actively in the work and have an obligation to vote on all questions submitted to vote within the technical committee. O-members follow the work as an observer but cannot make any comments about the development process or vote. Correspondent members can become O-members of a particular technical committee.

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ANSI/ASME B16.25 standard specification

ANSI/ASME B16.25 is the standard covers the preparation of butt welding ends of piping components to be joined into a piping system by welding. The standard includes the butt welding ends information of General scope, Welding Bevel designs, Preparation of inside diameter of welding ends and the tolerances involved. ANSI/ASME B16.25, Buttwelding Ends Following are the dimensions of the butt welding pipe ends according to ANSI B16.25. It includes requirements forwelding bevels, for external and internal shaping of heavy-wall components, and for preparation of internal ends (including dimensions and tolerances). Coverage includes preparation for joints with the following: (a) no backing rings (b) split or noncontinuous backing rings (c) solid or continuous backing rings (d) consumable insert rings (e) gas tungsten arc welding (GTAW) of the root pass Details of preparation for any backing ring must be specified when ordering the component. ANSI/ASME B16....

Large diameter elbow

Large diameter elbow is curved connecting pieces that join straight lengths of pipe, commonly at a 90° or 45° angle, allowing obstructions to be avoided in plumbing, ventilation, welding, and automotive applications. ASME B16.9 Standard covers overall dimensions, tolerances,ratings, testing, and markings for factory-made wrought buttwelding fittings in sizes NPS 1⁄2 through NPS 48 (DN 15 through DN 1200). Size range: 20 "-62" Inch Wall thickness: Sch5-Sch160 XXS Material: Carbon steel: ASTM A234 WPB, WPC, ASTM A420 WPL1, WPL3, WPL6, WPHY42, 46, 52, 56, 60, 65, 70 Alloy steel: ASTM A234 WP1, WP12, WP11, WP22, WP5, WP7, WP8, WP91 API5L X42 X52 X56 X60 X65 X70 X80 Stainless steel: ASME A403 WP304, 304L, 316, 316L, 310 Standards: ANSI, DIN, JIS, GB, ASTM, JB, SH, YB, SY, HG, API ASME Usage: Petroleum, chemical, power, gas, metallurgy. Our pipe elbows are widely used in many industries, such as power generation, petroleum, natural ga...

Stainless stub end

Stainless stub end are fittings used in place of welded flanges where rotating back up flanges are desired. Leading Manufacturer and Exporter of Stainless Steel Stub End such as Stainless Steel Stub Ends ASTM A403, Stainless Steel Stub End 304L, Stainless Steel Stub End 316L, Stainless Steel Stub End 317, Stainless Steel Stub End 317L, Stainless Steel Stub Ends and many more items from China. Minimum lap thickness shall not be less than nominal wall thickness. Contact faces of stub ends shall have a concentric serration or spiral according to the purchaser's requirements. These lengths and radius apply for schedule 40s or thinner stainless steel pipes. Radius of fillet B is only effective to MSS SP-43 lap joint stub ends. Butt weld long stub end ANSI ASME B16.9 Butt Weld Lap Joint Flange Stub End Lap Joints are consisted of three series. Nominal Pipe Size Outside Diameter at Bevel ...