A53 United States standard seamless steel pipe corresponding A53 United States standard seamless steel pipe corresponding to the domestic material ?

3 125

        A53 United States standard seamless steel pipe corresponding to the domestic material ? answer: 20 # carbon steel seamless pipe

       First, 20 # seamless steel pipe product profile

       20 # seamless steel pipe with its excellent performance and suitable price is widely used in petrochemical and other industries. 20 # GB / T8163-2008 "seamless steel pipe for fluid transmission", GB3087-2008 "seamless steel pipe for low and medium pressure boilers", GB9948-2013 "Seamless steel pipe for petroleum cracking" and GB6479-2013 "High-pressure fertilizer equipment Seamless steel pipe "and other national standards.

      Different standards of 20 # seamless steel pipe in the price and the use of performance there is a big difference. Currently on the market 20 # seamless steel pipe manufactured according to GB 6479-2013 than GB / T 8163-2008 manufacturing price of about 1,000 yuan / ton.  

a53 pipe, 20# carbon steel pipe

       20 # seamless steel pipe are what standards?

       ①   GB / T 8163-2008 seamless steel pipe for fluid transportation

       ② GB 3087-2008 low and medium pressure boiler seamless steel pipe 

③ GB 9948-2013 petroleum cracking seamless steel pipe  

④ GB 6479-2013 high-pressure fertilizer equipment seamless steel pipe  

       ⑤ GB 5310-2008 high-pressure boiler seamless steel pipe (the standard steel No. 20G; G said the boiler pipe)  

     Second, 20 # chemical composition

20 # seamless steel chemical composition

       As can be seen from Table 1: The main elements (such as C, Si, Mn) of the chemical composition of 20 # seamless steel pipe in each material standard are all the same. The content of residual elements (such as Ni, Cr, Cu, Mo, V) in steel GB 9948-2013 and GB 6479-2013 are the same, but GB / T 8163-2008 is slightly different from the above two standards, the main chemical composition The difference lies in the P, S content.

     Third, 20 # mechanical properties (mechanical properties)

20 # seamless steel pipe mechanical properties

       It can be seen from Table 2 that the tensile strength of 20 # seamless steel pipe in each material standard is basically the same, the main difference is the impact test.

According to GB / T8163-2008 20 # seamless steel pipe manufacturing, no impact test inspection, only when the demand side, after consultation between the supply and demand, and in the contract specified impact test before the Charpy V-notch impact test.

According to GB 9948-2013 20 # seamless steel pipe, only for the outer diameter of not less than 76mm and the wall thickness of not less than 14mm at room temperature impact test, the impact of other specifications of the steel pipe to be tested by the supply and demand sides negotiated and in the contract Agreement.

According to GB 6479-2013 20 # seamless steel pipe, D ≥ 76mm and S ≥ 6.5mm steel pipe provided 0 ℃ impact test.

Obviously, according to GB 6479-2013 20 # seamless steel pipe, the mechanical properties of the requirements of the other two standards higher.

       Fourth, 20 # material substitution problem

 

In the procurement phase or on-site construction process, construction units often propose to the design agency material substitution problems. In addition to the pipeline specifications require substitution, when using other standard production of steel instead, the designer should pay attention to the design conditions and standard differences in order to correctly sign a single confirmation.

      a) 20 # seamless steel pipes produced according to GB 6479-2013 and GB 9948-2013 can replace 20 # seamless steel pipes produced according to GB 3087-2008 and GB / T 8163-2008 under the same specifications .

      b) Since 20 # seamless steel pipes produced according to GB 6479-2013 and GB 9948-2013 have excellent toughness, it is recommended that steel pipes used under low temperature of not lower than -20 ° C be made according to GB 6479-2013 and GB 9948-2013 standard production of 20 # seamless steel pipe.

      c) According to GB / T 8163-2008 standard production of 20 # seamless steel pipe only for general fluids. As GB 3087-2008 standard GB / T 8163-2008 standard wall thickness tolerances, bending test, low magnification test and surface quality requirements higher, while GB 3087-2008 standard also provides high temperature strength requirements, therefore Under the condition that the maximum test pressure is not more than 10MPa, 20 # seamless steel pipe produced according to GB 3087-2008 standard can replace 20 # seamless steel pipe produced according to GB / T 8163-2008 standard. When the pipe wall thickness ≥ 15mm, replacement should pay attention to calculate the wall thickness of steel.

 
.

Related post

3 Comments

  1. DIN 2391 seamless steel tube
    DIN 2391 seamless steel tube 1333942497 -  Reply / Edit

    Standard: DIN 2391-1/EN 10305-1 Application: For Auto use, machinery use, Oil cylinder tube, Motorcycle shock reducer steel tubes, Auto shock reducer inner cylinder Size(mm): O. D.: 6.0-224.0 W. T.: 1-15 L: Max 12000 Delivery condition: Hot .

  1. Oil Pipe
    Oil Pipe 1333966962 -  Reply / Edit

    API 5CT Oil Pipe,We can supply full range of seamless carbon steel pipes and tubes which can not be supplied by any of the manufacturers alone. And API 5CT J55,API 5CT N80 is our mainly products.Seeing is believeing,we sincerely invite you t.

  1. Light Galvanized Tube
    Light Galvanized Tube 1336964842 -  Reply / Edit

    Item: Galvanized steel pipe Length: SRL, DRL, specified length as required Standard: ASTM A53, ASTM A106, API 5L, APL 5CT Outside diameter: DN 10-1400 Thickness: SCH 5-160 Surface treatments: Oil-dip, varnish, passivity, phosphat.

  1. schedule 120 steel pipe,schedule 120 steel tube
    schedule 120 steel pipe,schedule 120 steel tube 1333636866 -  Reply / Edit

    schedule 120 steel pipe,we manufacture MS pipe.Similar to a heat-transfer system, the petroleum industry typically will use a seamless carbon steel pipe to transfer petroleum. This pipe typically is much larger thancarbon steel pipes used fo.

Latest Comments

  • Welded (ERW, LSAW, SSAW) steel line pipe grade feature
    Welded (ERW, LSAW, SSAW) steel line pipe grade feature

    Specification Octal supply API 5L welded ( ERW, EFW , LSAW, SSAW ) steel line pipe in Gr B, X42, X46, X52, X56, X60, X65 PSL1, PSL2 and for sour service (NACE pipe). Line pipe brief introduction API 5L steel line pipe is for oil and gas ind.

  • 15CrMoG Alloy steel tube Introduction, characteristics, chemical composition, presentation method
    15CrMoG Alloy steel tube Introduction, characteristics, chemical composition, presentation method

    15CrMoG Alloy steel tube Introduction, characteristics, chemical composition, presentation method 15CrMoG Alloy steel pipe is a seamless steel tube, its performance is much higher than the general seamless steel pipe, because the inside of.

Get in touch

Our company covers an area of 80, 000 m2 with a total assets of 90 million Yuan. There are 360 staff members including 80 technicians in our company. .

We also establish an effective complete quality control system. In 2003, our company obtained the certificate of ISO9001 Quality System Authentification!