Butt Weld Pipe Fittings

Pipe fittings are work that involves the installation or repair of pipes or tubes. Pipes and tubes are necessary for a wide range of reasons. We are passionate about elbows, tees, reducer … Pipe elbows  >> Steel elbow is used to be installed between two lengths of pipe or tube allowing a change of direction,usually these carbon steel elbows distinguished by connection ends. +  Long radius  +  Short radius Pipe bending  >> Pipe bend can be made of variety materials,like carbon steel,alloy steel,stainless steel,low temperature steel or high performance steel,etc. + 180 degree bending     +  ASTM API 5L Gr.B bends   Pipe Tees  >> We can provide seamless tube tees and welding tube tees,which can also be divided into straight tees and reducing tees.Usually,the pipe tees have the same inlet and oulet sizes. +  Reducing tee     +  Barred Tee     +  Stainless Steel Tee Cross  >> A pipe fitting, having four op

The American National Standard Institute, ANSI, has been overseeing guidelines and standards for products manufactured through several sectors. WHAT IS ANSI? ANSI-approved flanges are used for the industrial market which handles gas, air and steam process systems. Originally formed in 1918, the American National Standards Institute is headquartered in Washington, DC, and is widely recognized as the American organization responsible for overseeing the national standards and conformity assessment system for products, services, processes, systems, and personnel. ANSI works domestically with American government agencies and organizations, as well as with international entities, to make ANSI standards useful around the world. Prior to the creation of ANSI, standards for engineering and equipment such as flanges were developed by the American Institute of Electrical Engineers (AIEE or IEEE), the American Society of Mechanical Engineers (ASME), the American Institute of Mi

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.

The WPB is not short hand for any process. It is simply an identifier developed by ASTM. The fittings in question are manufactured in the same manner as the companion pipe for this specification. ASTM A234 WPB pipe fittings In very large sizes, the fittings may be manufactured in pieces and welded together as is the case for many large fittings. The term used for the manufacturing is called “wrought” which means it is worked as opposed to being cast or forged. As to the W standing for weldable, I’m not sure that is correct since that are many, many pipe fittings that are weldable but carry designations other than a W. Note the reference below. Forging is the manufacturing process of ASTM A234 WPB pipe fittings. W = WELDABLE / wrought P = RELATED TO P NUMBER OF ALLOY MATERIAL B = REFER TO MINIMUM YIELD OF MATERIAL LATEST STANDARD IS: ASTM A234/A234M-07 Standard Specification for Piping Fittings of Wrought Carbon Steel and Alloy Steel for Moderate and High Temp

The  British Standard Pipe  (BSP) is a family of standard screw thread types that has been adopted internationally for interconnecting and sealing pipe ends by mating an external (male) with an internal (female) thread. Two types of threads are distinguished: BSPT : British Standard Pipe Taper -also known as “R” or “Rc” threads BSPP : British Standard Pipe Parallel -also known as “G” or “Rp” threads Parallel (‘straight’) threads, British Standard Pipe Parallel thread (BSPP; originally also known as British Standard Pipe Fitting thread/BSPF and British Standard Pipe Mechanical thread/BSPM), which have a constant diameter; denoted by the letter G. Taper threads, British Standard Pipe Taper thread (BSPT), whose diameter increases or decreases along the length of the thread; denoted by the letter R. These can be combined into two types of joints: Jointing threads: These are pipe threads where pressure-tightness is made through the mating of two threads together. They always

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 orga

American National pipe (NPT, NPS), Like British Standard Pipe (BSP), is designated by trade size, rather than actual diameter, as shown in the table below. NPT Thread – American Standard Taper Pipe Thread (ANSI/ASME B1.20.1), Taper 1:16 Thread Form Data – Basic Dimensions of American National Standard Taper Threads, NPT (National Pipe Tapered) There are two basic types of National pipe threads: NPT: National Pipe Taper NPS: National Pipe Straight NPT threads are also sometimes referred to as MIP (Male Iron Pipe) FIP (Female Iron Pipe) IPT (Iron Pipe Thread) FPT (Female Pipe Thread) MPT (Male Pipe Thread) Note that these references are somewhat casual, and might possibly be used in reference to NPS instead of NPT. Both NPT and NPS have the same thread angle, shape, and pitch (threads per inch). However, NPT threads are tapered and NPS threads are straight (parallel). Both threads have a 60° included angle and have flat peaks and valleys (this is a Sellers thread