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steel;pipe

  • Supplier - CANGZHOU HUASHIYOU STEEL PIPE CO.,LTD
  • China (Mainland)China (Mainland)
  • US$5 Million - US$10 Million
  • 11 - 50 People
  • Business Service (Transportation,finance,travel,Ads,etc)
  • North America,South America,Eastern Europe,Southeast Asia,Africa,Oceania,Mid East,Eastern Asia,Western Europe
  •     
  • skype
  • Mr.
  • +86-317-2096991
Post Date : March 18
Product Details
Company Profile
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Item specifics

Specifications

Pipe (Steel pipe) is used for transmission fluid and powdered solids, heat exchange, manufacture of mechanical parts and containers, but also an economic steel. Development of steel production technology began in the rise of the bicycle industry, the development of oil, ships, boilers, aircraft manufacturing, manufacturing after World War II thermal power boilers, chemical industry as well as the development of the early 19th century during the two world wars oil and gas drilling and transportation, have a strong impetus to the development of steel industry in the variety, yield and quality. Pipe according to production methods can be divided into two categories: seamless steel tube and pipe joints, pipe joints referred to as straight pipe joints.
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steelpipe

steelpipe

steelpipe
Nominal size and actual size

A, nominal dimensions: nominal dimensions specified in the standard, is the ideal size of users and producers hope to get, but also the size of the order specified in the contract.

B, actual size: actual size of the production process is obtained, the size is often larger or smaller than the nominal size. This is greater than or less than the nominal size of the phenomenon known as bias.

C, m weight: weight per meter = 0.02466 * thickness * (OD - Wall Thickness)

Deviations and tolerances

A, deviation: in the production process, the actual size is difficult to achieve due to the nominal size requirements, i.e., often greater than or less than the nominal size, so the standard set forth in the actual size and a nominal difference between the allowed size. The difference is called a positive bias is positive, the difference is negative is called a negative bias.
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steelpipe

steelpipe

steelpipe
Oversize or call dimension beyond the standard tolerances. Here's "size" mainly refers to the outside diameter and wall thickness of steel pipe. The size tolerance is usually someone used to call "tolerance outrageous" that the bias and tolerance equate imprecise, it is called, should be called "deviation outrageous." Deviations here may be "positive", it may be "negative" and rarely "positive and negative" deviation outrageous phenomenon in the same batch of steel pipe.

Note: The calculation formula used to calculate the theoretical weight profiles:

m = F * L *

m- quality Kg; F- off area m2 / m; L- length m; - density * Kg / m3

Where: F-off area calculation methods:

1, square steel F = a2

2, pipe F = 3.1416 * $ (D- $) D- Diameter $ - Thickness

3, steel, flat steel F = a * $ a- width
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