Guobiao standards or GB standards are the Chinese national standards issued by the Standardization Administration of China (SAC), the Chinese National Committee of the ISO and IEC. Mandatory standards are prefixed “GB”. Recommended standards are prefixed “GB/T” (T from Chinese language 推荐; tuījiàn; ‘recommended’).

What are the piping codes?

The American National Standards Institute (ANSI) Standards

  • ASME B31.1 – Power Piping.
  • ASME B31.2 – Fuel Gas Piping.
  • ASME B31.3 – Process Piping.
  • ASME B31.4 – Pipeline Transportation Systems for Liquid Hydrocarbons and Other Liquids.
  • ASME B31.5 – Refrigeration Piping and Heat Transfer Components.

What is ASTM piping?

ASTM A53 pipe (also referred to as ASME SA53 pipe) is intended for mechanical and pressure applications and is also acceptable for ordinary uses in steam, water, gas and air lines. It is suitable for welding and for forming operations involving coiling, bending, and flanging, subject to certain qualifications.

What is the standard length of pipe?

Single random pipe length is usually 18 – 25 feet plain end or 18 – 22 feet threaded and coupled pipes.

Does China use ISO standards?

China is by far the leading country for ISO 9001 in absolute numbers (ISO, 2016) and relative to GDP (Heras-Saizarbitoria & Boiral, 2015). The number of ISO 9001 registrations have doubled or tripled each year since 1997 (Heras-Saizarbitoria & Boiral, 2013).

What is GB certificate?

What is GB testing and the GB standard? China’s GB 18401-2010 is the National General Safety Technical Code for textile products. It is a mandatory standard that regulates the safety and quality of textile products in China.

What are the pipe standards?

Piping standards define application design and construction rules and requirements for piping components as flanges, elbows, tees, valves etc. A standard has a limited scope defined by the standard.

What’s the difference between code and standard?

A code is a model, a set of rules that knowledgeable people recommend for others to follow. It is not a law, but can be adopted into law. A standard tends be a more detailed elaboration, the nuts and bolts of meeting a code.

What ASTM is schedule 40 pipe?

ASTM D1785 Standard Specification for Poly(Vinyl Chloride) (PVC) Plastic Pipe, Schedules 40, 80, and 120 is manufactured to meet the needs of a broad range of industrial, commercial and residential piping systems. ASTM D1785 covers pipes made for water distribution and irrigation systems.

How is pipe size?

Tubing is measured by the OUTSIDE DIAMETER (O.D.), specified in inches (e.g., 1.250) or fraction of an inch (eg. 1-1/4″). Pipe is usually measured by NOMINAL PIPE SIZE (NPS). For example, a 1-1/2″ pipe size actually has an outside diameter of 1.9″ NOT 1.5″.

Are there Chinese pipe standards GB/T 12459 & flange standard HG 20592?

Anyone familiar with Chinese Pipe Standards GB/T 12459 & Flange Standard HG 20592? The ANSI store offers the GB/T 12459 standard in Chinese text only. We are mainly trying to find dimensional information for modeling purposes.

How many GB standards are there in China?

More than 180,000 China National GB Standards, Industry standards & Regulations databse for free search. GB standards are all Chinese, almost no official English version, we provide professional GB standard translation services, to help you better understand the GB standards.

What is the difference between GB and ASME standards?

Comparison of GB and ASME Standards. • Factor of Safety • GB 150-89 : 3.0 for carbon steel, low-alloy steel, high alloy steel vessel • ASME VIII Div 1: 3.5 for carbon steel, low alloy steel • ASME VIII Div 1 : 3.0 for High alloy steel • Note: ASME VIII Div 2: Factor of safety is 3.0.

What are GBGB standards?

GB standards are the China national standards, also called as Guobiao Standards, China GB standards are classified as two stages, Mandatory or Recommended. Mandatory standards have the force of law as do other technical regulations in China.