What is a standard used in pipe fittings?

Author: Eldon Glover  |  Last update: Friday, August 8, 2025

The most relevant stainless steel pipe fittings standards are ANSI B1. 20.1 and ASTM A351. ANSI B1. 20.1 provides the considerations when categorizing pipe fittings by dimension, while ASTM A351 defines the materials and castings used within pipe fittings.

What is the ASTM standard for pipe fitting?

General Requirements for orders under this Standard shall conform to ASTM A480. This Standard covers nominal wall thickness tubes and welded tubes made from austenitic steel. Sizes and thicknesses usually are 3.2mm inside diameter to 127mm outside diameter and 0.4mm to 12.7mm inclusive in minimum wall thickness.

What is the standard used for piping?

ASME B31.

It addresses design, construction, and maintenance of piping systems, emphasizing safety and integrity.

What is the difference between ASME B16 9 and ANSI B16 9?

ANSI B 16.9

9, It is a standard for all the weld fittings that are wrought butt welded and are produced in factories that range from NPS ½ to NPS 48”. ASME B16. 9 is integrated by MSS SP43 which comprises the stainless steel and nickel alloy fittings.

What is the code for pipe fitting?

332996 - Fabricated Pipe and Pipe Fitting Manufacturing

This U.S. industry comprises establishments primarily engaged in fabricating, such as cutting, threading, and bending, metal pipes and pipe fittings made from purchased metal pipe.

Fittings 101: NPT & NPTF

What is the ASME Code for pipe material?

Material codes enable clear comparisons to be made between materials, avoid misunderstandings between users and their use ensures operators can accurately identify the key attributes of a material such as its tensile strength, elasticity, thermal conductivity, or corrosion resistance helping determine its suitability ...

How do you specify pipe fittings?

Selecting Pipe Fittings
  1. Material—The fitting must be compatible with the pipes and the fluids it will carry.
  2. Temperature and Pressure—Be sure the temperature and pressure ratings are appropriate for the situation.
  3. Design and Application—Choose right size and type of fitting for job.

What is the ASME standard for fittings?

ASME B16. 11 is the standard for the forged steel fittings, including socket weld and threaded type. Material including carbon steel, alloy steel and stainless steel. Also described as Class 2000, 3000, 6000 threaded end fittings and Class 3000, 6000, and 9000 for socket weld end fittings.

What is the difference between ASME B31 1 and B31 9?

ASME B31. 9 contains rules for the piping in industrial, institutional, commercial, and public buildings, and multi-unit residences, which does not require the range of sizes, pressures, and temperatures covered in B31. 1.

Are ANSI and ASME standards the same?

ANSI works towards strengthening the position of the US in the global market, whereas ASME works towards finding the solutions to real-time mechanical engineering problems. 5. ASME has developed 600 standards and codes for various mechanical devices, while ANSI has designated approximately 9500 standards.

What is the ASME Code for piping?

ASME has been defining piping safety since 1922. ASME B31. 3 contains requirements for piping typically found in petroleum refineries; chemical, pharmaceutical, hydrogen, textile, paper and pulp, power generation, semiconductor, and cryogenic plants; and related processing plants and terminals.

Which code is used in piping?

ASME B31.3 – Process piping

This code prescribes requirements for the materials, design, fabrication, assembly, erection, examination, inspection, and testing of piping within the property limits of facilities engaged in the processing or handling of chemical petroleum or related products. The requirements of ASME B31.

What are the pipe standard list?

  • Standard Pipe Sizes.
  • A Table of the Most Common Standard Pipe Sizes.
  • Nominal Bore 1/2 inch (DN 15 mm), Outside Diameter 21.34 mm.
  • Nominal Bore 3/4 inch (DN 20 mm), Outside Diameter 26.67 mm.
  • Nominal Bore 1 inch (DN 25 mm), Outside Diameter 33.40 mm.
  • Nominal Bore 1.5 inch (DN 40 mm), Outside Diameter 48.3 mm.

What does WPB stand for in pipe fittings?

ASTM A234 is standard of the pipe fitting material. However, this is indicating the properties of the material of various kinds of alloy steel and carbon steel. WPB is a steel grade in which W stands for weldable, B is grading B and P stands for pressure. Thus it is referring minimum yield strength.

What is the difference between ASTM and ASME pipe?

Basically ASTM creates the material specifications and standard test methods to determine compliance. ASME selects those ASTM materials which will perform adequately in boiler or pressure vessel service and accepts them with stated limitations.

What is the ASTM standard code?

ASTM currently stands for ASTM International but was originally an acronym for American Society for Testing and Materials. ASTM is an organization that defines and publishes technical standards related to the quality of materials that can be used in the manufacturing of various products and pieces of equipment.

Is B31 3 a code or standard?

ASME B31. 3 is the standard that governs the design, construction, inspection, and maintenance of process piping systems. Industries primarily use these systems to transport or process chemicals, oil, gas, or other hazardous materials.

How many ASME standards are there?

It produces approximately 600 codes and standards covering many technical areas, such as fasteners, plumbing fixtures, elevators, pipelines, and power plant systems and components. ASME's standards are developed by committees of subject matter experts using an open, consensus-based process.

What does ASME B31 8 stand for?

ASME B31. 8 covers gas transmission and distribution piping systems, including gas pipelines, gas compressor stations, gas metering and regulation stations, gas mains, and service lines up to the outlet of the customer's meter set assembly.

What is the code for pipe fittings?

HS Code 7307 | Harmonized System Code of TUBE OR PIPE FITTINGS (FOR EXAMPLE, COUPLINGS, ELBOWS, SLEEVES), OF IRON OR STEEL.

What does 3M mean on pipe fittings?

3M is referring to 3000 lbs fittings, which the forged pipe fitting can withstand up to 3000 PSI or 206 Bars. Material Identification of A105 shall not be marked as carbon steel material is group under standard material grade.

What is the ASME standard for NPT?

NPT is defined by ANSI/ASME standard B1. 20.1. The taper rate for all NPT threads is 1 inch of diameter in 16 inches of length ( 3⁄4 inch per foot or 62.5 millimeters per meter) measured by the change of diameter (of the pipe thread) over distance of thread.

What is the most common pipe fitting?

Tee fittings are the most common type of pipe fitting. They are T-shaped components with one inlet and two outlets at 90-degree angles, used to split one supply line into two or join two lines into one.

What are the three types of pipe fittings?

Couplings: Used to join two straight pieces of pipe of the same diameter. Reducers: Used to join pipes of different diameters. Makes a gradual change in diameter. Bushings: Used to make the diameter of a pipe fitting smaller.

What type of fittings must be bolted together?

Flanges are fittings used to facilitate the formation of strong pipe connections in high and low pressure fluid systems. They are designed to be threaded or welded to pipes and then sealed with bolts.

Previous article
Is 72 a good temperature for heat?
Next article
How far away can a push button be for a door?