Stainless Steel Welded Pipe ASTM A358/A312/A778

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1、Structure of Stainless Steel Welded Pipe ASTM A358/A312/A778 Description:

 

    Stainless steel welded pipe is actually a cover term, covering a wide range of alloy and making them suitable for different attributes that are used in a very wide and large numbers of different industries. Stainless steel pipe is resistant to erosion, highly flexible, powerful, easy to use, and can be done in distinct approaches, which means that more and more stainless steel was used as a construction material for large-scale, high impact buildings. It can be molded, rolling, and it can create amazing shapes to make it perfect, It is used as experimental buildings, The use of steel pipe welding of large stainless steel covers other examples.




2、Main Features of the Stainless Steel Welded Pipe ASTM A358/A312/A778:


• High manufacturing accuracy

• High strength

• Small inertia resistance

• Strong heat dissipation ability

• Good visual effect

•Reasonable price 


 

3、Stainless Steel Welded Pipe ASTM A358/A312/A778 Images:











4、Stainless Steel Welded Pipe ASTM A358/A312/A778 Specification:



Size: 

Outside diameter        Outside                                                                   Thickness
SCH 5SSCH 10SSCH 20SSCH 40S
(A)(B)mmmmmmmmmm
35014′355.63.964.787.9211.13
40016′406.44.194.787.9212.7
45018′457.24.194.787.9214.27
50020′508.04.785.549.5315.09
55022′558.84.785.549.5315.09
60024′609.65.546.359.5317.48
65026′660.45.547.9212.717.48
70028′711.25.547.9212.717.48
75030′762.06.357.9212.717.48
80032′812.8
7.9012.717.48
85034863.6
7.9212.717.48
90036′914.4
7.9212.719.05
100040′1016.0
9.53

 

Tolerances on dimensions table: 

StandardOutside(mm)Thickness(mm)Length(mm)
ASTM A312≤48.26+0.40 -0.80+No special provisions(Unspecified)-12.50%Appoint LengthDefinite cut length+6.40

-0

>48.26~114.30+0.80 -0.80
>114.30~219.08+1.60 -0.80
>219.08~457.20+2.40 -0.80
>457~660+3.20/-0.80
>660~864+4.00/-0.80
 >864~1219+4.48/-0.80
JIS G3459<30.00 ±0.30≥30.00 ±1.00%<2.00 ±0.20≥2.00 ±10%Appoint LengthDefinite cut Length
GB/T 12771<13.00 ±0.2013.00~40.00 ±0.30≥40.00 ±0.80%≤4.00 +0.50 -0.60>4.00 ±10%+20.00-0
EN 10217-7D1±1.50% with±0.75mm(min)D2±1.00% with±0.50mm(min)D3±0.75% with±0.30mm(min)

D4±0.5% with±0.10mm(min)

T1±15.00% with±0.60mm(min)T2±12.5% with±0.40mm(min)T3±10.00% with±0.20mm(min)

T4±7.50% with±0.15mm(min)

T5±5.00% with±0.10mm(min)

EN ISO 1127

≤6000 +5.00 -06000~12000 +10.00 -0


 


5、FAQ of Stainless Steel Welded Pipe ASTM A358/A312/A778: 


How is the quality of your products?
    Our products are manufactured strictly according to national and internaional standard, and we take a test on every pipe before delivered out. If you want see our quality certifications and all kinds of testing report, please just ask us for it.
Guaranteed: If products’ quality don’t accord to discription as we give or the promise before you place order, we promise 100% refund.


How about price?
     Yes, we are factory and be able to give you lowest price below market one, and we have a policy that “ for saving time and absolutely honest business attitude, we quote as lowest as possible for any customer, and discount can be given according to quantity”,if you like bargain and factory price is not low enough as you think, just don’t waste your time.Please trust the quotation we would give you, it is professional one.

Why should you chose us?
     Chose happens because of quality, then price, We can give you both.Additionally, we can also offer professional products inquiry, products knowledge train(for agents), smooth goods delivery, exellent customer solution proposals.Our service formula: good quality+good price+good service=customer’s trust
SGS test is available, customer inspection before shipping is welcome, third party inspection is no problem.

Any question, pls feel free to contact us !








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Q:What kind of stainless steel square tube is used in ordinary square tubes?
In the industry of stainless steel tube is mainly used to do some pipelines, of course in the construction industry and its use is more widely used, such as shutters, staircase handrails, railings, road partition and so on, at present, many products are used in stainless steel pipe, such as bicycles, medical equipment, automobile and so on.
Q:Under what circumstances can the stainless steel pipe be welded by argon arc, and under what conditions can the arc welding be used?
The quality of argon arc welding is high, the efficiency is low, the efficiency of SMAW is relatively high, the quality of secondary pipe welding, general thick such as 10mm are TIG welding, welding rod filler cover, if the pipe is thin directly by argon arc welding
Q:Stainless steel pipe is mainly used in what areas?
According to the use of stainless steel pipe can be divided into oil well pipe (casing, tubing and drill pipe etc.), line pipe, boiler tube, mechanical structure, hydraulic prop pipe pipe, cylinder pipe, geological pipe, chemical pipe (high pressure fertilizer pipe, oil cracking tube) and shipbuilding pipe etc..
Q:In stainless steel tubes, why are there some SS in the back and some standard L, such as 316L and 316SS? What's the difference?
316: corresponding to China's brand 0Cr17Ni12Mo2316L: corresponding to Chinese brand 00Cr17Ni14Mo2316L steel is a low C series of 316 steel grades. It has better corrosion resistance except for the same characteristics as 316 steel.
Q:Difference between stainless steel and steel pipe
Stainless steel (Stainless Steel) is referred to as the stainless steel, the resistance of air, steam, water and other weak corrosive medium or with stainless steel known as stainless steel; while the resistance to chemical corrosion (acid, alkali and salt chemical etching) corrosion of steel called acid resistant steel. Because of the difference in the chemical composition of the two, and make their corrosion resistance is different, ordinary stainless steel is generally not resistant to chemical medium corrosion, and acid resistant steel are generally stainless steel.
Q:304 stainless steel tube with the diameter of 25*2-3 is what mean?
This is according to the "water drawing standards" (GBT50106-2001) in 2.4.2-2 seamless steel pipe, welded steel pipe (straight or spiral seam), brass, stainless steel pipe, pipe diameter should be D diameter * thickness representation (such as D108 * 4 and D159 * 4.5); and the provisions of the habit of acting D with seamless pipe diameter.
Q:Why does the 304 stainless steel pipe leak?
The corrosion resistance of stainless steel is due to the formation of a very thin, adhesive and semi transparent chromium oxide film on the surface of stainless steel. Once this layer of film is destroyed, the chromium in the steel react with oxygen in the atmosphere to recover the film quickly, and mechanical damage can quickly produce a protective film. However, if the chemical erosion by ions, especially chloride ions, will quickly dissolve and corrosion, the result is that the metal surface needle or point, there is a certain depth of small holes, this corrosion is called pitting.
Q:Advantages and disadvantages of PPR lined stainless steel pipe and PPR aluminium plastic pipe
PPR lined stainless steel tubeAdvantage:Stainless steel lining pipe, high temperature resistance, can transport hot water, boiling water, steam, and safety and health. The installation of stainless steel tube after the whole bearing pipe resistance, impact resistance, corrosion resistance and other properties to strengthen and enhance the original tube, not only can be used for civilian water and gas, can also be used for fluid transportation industry.shortcomingOnce the processing is not well controlled, it is easy to cause stainless steel and PPR delamination.
Q:Stainless steel and stainless steel pipe inside and outside polishing off, what is the difference?
The main difference between these materials is that the chemical composition is different. The corrosion resistance of 316L is stronger than that of 304 and 304L, and that of L indicates lower carbon content and stronger flexibility. Choose the key depends on the things inside, corrosion is not big, how to use the environment, there are high pressure requirements are not high.
Q:What is the difference between stainless steel seamless tube and stainless steel welded pipe?
Stainless steel welded pipe is also a hollow section of steel, but it is welded through the plate into the steel pipe, so there is a welded steel pipe welding gap.

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