Piping Material Codes And Standards

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Piping Material Codes And Standards – ASTM, known as the American Society for Testing and Materials, is one of the world’s leaders in helping to develop various voluntary consensus standards. ASTM standards are used by individuals, companies and various institutions around the world. These standards are made up of 30,000 volunteer members from over 140 countries. ASME piping standards cover specific requirements for working in high-pressure and high-temperature applications. The standards outlined in the ASTM Pipe Standards Table help determine the quality and safety of materials in a wide range of industries and consumers. These safety standards help ensure the quality and consistency of materials.

The ASTM Table of Pipe Sizes helps identify the nominal pipe size, wall thickness, weight, and schedule designation of a pipe component in perspective. This ASTM piping chart plays a vital role in determining the type of piping product you are looking for to best meet the requirements of your project. Most ASTM pipe sizes are expressed in inches or millimeters. These pipes can come in a variety of sizes and shapes, depending on the material and processes used to produce the pipe components. The ASTM Pipe Schedule helps determine the wall thickness of a pipe of the same diameter. These help dictate their load capacity and are generally designed in schedules 5, 5S, 10, 10S, 20, 20S, 30, 40, 40S, 60, 80, 80S, 100, 120, 140, 160, XS and XXS. ASME B36.19 includes standard specifications for seamless and welded pipe types designed to perform in both high and low pressure and temperature applications. ASME B 36.19 can also be used for nonferrous tubing such as titanium, zirconium, copper, and aluminum. This specification has variations and tolerances allowed for each module. If you have any questions or would like to learn more about ASTM pipe size and its components, please contact us for more information.

Piping Material Codes And Standards

Piping Material Codes And Standards

There are several standards to describe the size, outside diameter and wall thickness of steel pipes. Mainly they are ASME B 36.10, ASME B 36.19.

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Both ASME B36.10 and B36.19 are standard specifications for steel pipe and accessory sizes.

The standard deals with the standardization of the sizes and dimensions of steel pipes. These pipes include seamless or welded types and are used at high or low temperatures and pressures.

Pipe is distinguished from pipe (Pipe vs Tube), here pipe is special for pipeline systems, transmission of fluids (oil and gas, water, mud). Use ASME B 36.10M.

In this standard, the outside diameter of the pipe is less than 12.75 inches (NPS 12, DN 300), the actual pipe diameter is larger than NPS (Nominal Pipe Size) or DN (Nominal Diameter).

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Further, for steel pipe sizes, the actual outside diameter is the same as the pipe number for all sizes.

Second, for NPS 1/8 (DN 6) through NPS 12 (DN 300), they are based on a standard outside diameter (O.D.). This O.D. was originally selected to specify pipe dimensions, but because pipe always has a wall thickness and an inside diameter (ID). For small tubes, there is a different measurement between OD and ID (wall thickness), but as tube sizes have increased, OD and ID have become roughly the same.

Since there is no relationship between the old standard thickness (OD) and the nominal size, both are supported by the ASME B 36.10 M standard.

Piping Material Codes And Standards

In ASME B36.10M, the piping scheme is identified as Standard (STD), Ex-Standard (XS), or Double Extra Strong (XSS); Or with timetable no. 5, 10, 20, 30, 40, 80, 120, 160.

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The steel pipe diagram is an indication method represented by ASME B 36.10, and used in many other standards, marked “Sch”. Sch is the abbreviation for schedule, generally found in the American Standard for Steel Pipe, which is a prefix of a serial number. For example, Sch 80, 80 is a pipe number from the ASME B 36.10 chart/table.

“Since the main application of steel pipes is the transportation of fluids under pressure, their inside diameter is their critical dimension. This critical dimension is considered as the nominal bore (NB). Therefore, when steel pipes carry fluids under pressure, it is very important that the pipe has sufficient strength and sufficient wall thickness. Thus, the wall thickness is specified in the Schemes, i.e. piping scheme, abbreviated as SCH. Here ASME is the given standard and definition for the piping scheme.”

When we describe the parameter of the steel pipe, we usually use the pipe schedule. It is a method that indicates the pipe wall thickness with a number. The piping scheme (sch.) is not a wall thickness, but a range of wall thicknesses. A different pipe scheme means a different wall thickness for steel pipe of the same diameter. The most common program indications are SCH 5, 5S, 10, 10S, 20, 20S, 30, 40, 40S, 60, 80, 80S, 100, 120, 140, 160. The higher the table number, the the pipe wall is thicker. surface area, the higher the pressure resistance.

If you are new to the pipe industry, why do you always see schedule 40 or 80 steel pipe everywhere? What kind of material for these pipes?

Codes And Standards

As you have read the articles above, you know that Schedule 40 or 80 is the wall thickness of a pipe, but why has it always been sought after by buyers?

Schedule 40 and 80 steel pipes as common sizes required in various industries, because of the general pressure these pipes bear, there is always a large quantity required.

The material standard for such a thickness pipe has no restrictions, you can ask for sch 40 stainless steel pipes, such as ASTM A312 Grade 316L; Or sch 40 carbon steel pipe, such as API 5L, ASTM A53, ASTM A106B, A 179, A252, A333, etc.

Piping Material Codes And Standards

Nominal Pipe Size (NPS) is a North American series of standard pipe sizes used for high or low pressures and temperatures. Pipe size is specified by two nondimensional numbers: a nominal pipe size (NPS) based on inches and a schedule (Sched. or Sch.).

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The nominal diameter also means the outer diameter. Because the pipe wall is very thin, the outer and inner diameter of the steel pipe are almost the same, so the average value of both parameters is used as the name of the pipe diameter. DN (nominal diameter) is the general diameter of various pipe and pipe fittings. The same nominal diameter of pipe and fittings can be connected together, it is interchangeable. Although the value is close to or equal to the inside diameter of the pipe, it is not the actual meaning of the pipe diameter. The nominal size is represented by a digital symbol followed by the letter “DN” and mark the unit in millimeters after the symbol. For example, DN50, a pipe with a nominal diameter of 50 mm.

The WGT class (weight class) is an indication of pipe wall thickness in older times, but is still used today. It has only three grades namely STD (standard), XS (extra strong) and XXS (double extra strong).

For earlier production barrel, each caliber has a single specification called standard barrel (STD). To cope with the high-pressure liquid, the thickening pipe (XS) appeared. The XXS (double extra strong) tubing seemed to handle the higher pressure fluid. People began to request the use of more economical thin-walled tubes until the advent of new material processing technology, and then the above tube number gradually appeared. For the appropriate relationship between piping schedule and weight class, see ASME B36.10 and ASME B36.19 specifications.

For example, a. Expressed as “pipe outside diameter × wall thickness”, such as Φ 88.9 mm x 5.49 mm (3 1/2″ x 0.216″). 114.3 mm x 6.02 mm (4 1/2″ x 0.237″), 6 m (20 ft) or 12 m (40 ft) length, single random length (SRL 18-25 ft) or double random length ( DRL 38-40 ft) ).

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B. Expressed as “NPS x Schedule”, NPS 3 in. x Sch 40, NPS 4 in. x Sch 40. Same size as above specification.

C. Expressed as “NPS x WGT Grade”, NPS 3 in. x SCH STD, NPS 4 in. x SCH STD. Same size as above.

D. There is another way, in North America and South America, you usually use “Outside Pipe Diameter x lb/ft” to describe the pipe size. As OD 3 1/2″, 16.8 lb/ft. lb/ft is lb/ft. The pipe material selection of various components is elaborated according to the type of material carried. Various liquids which are flammable, corrosive, explosive, volatile, reactive and sometimes hazardous to human health are transported through pipelines, so choosing the right pipeline material is important.

Piping Material Codes And Standards

, the process condition that affects material selection is the type of fluid transported. For corrosive fluids, you should choose material with higher corrosion resistance compared to non-corrosive service.

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An increase or decrease in the temperature of the operating fluid has a major effect on the mechanical properties of the pipe material, such as impact strength, elongation and tensile strength; therefore you need special equipment for both high temperature and cryogenic services.

The process condition affecting material selection is the pressure of the operating fluids. You needed high strength or thicker material for high pressure services compared to regular printing services.

As with process fluid properties, there are certain material properties that are also considered when selecting piping material. Some of them are

Now consider both

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