Longitudinally Submerged Arc Welding Steel Pipe

Low price LSAW Steel Pipe Piles /
longitudinal seam submerged arc welded steel pipe
Process Longitudinal Submerged-Arc Welded Steel Pipe
Out Diameter:219.1mm -1820mm (8” -72”)
Wall Thickness: 5.0 -50mm
Length: Up to 12 M
Standard:API 5L, API 5CT, ASTM 53, EN10217,
DIN 2458. IS 3589, GB/T3091, GB/T9711
Out Diameter: 355.6mm – 1820mm (14” -160”)
Steel Grade: API 5L: GR B, X42,X46, X56, X60,X65,X70
ASTM A53: GR A, GR B, GR C
EN: S275, S275JR, S355JRH, S355J2H
GB: Q195, Q215, Q235, Q345, L175, L210,
L245, L320, L360- L555
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Product Details



Product Details




LSAW (Longitudinally Submerged Arc Welded Steel pipes) in leaflets plate as raw material, the steel plate in the mold or molding machine pressure (volume) into using double-sided submerged arc welding and flaring from production.



Longitudinally submerged arc welding steel pipe


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Low price LSAW Steel Pipe Piles / longitudinal seam submerged arc welded steel pipe

Process

Longitudinal Submerged-Arc Welded Steel Pipe

Out Diameter:

219.1mm -1820mm (8” -72”)

Wall Thickness:

5.0 -50mm

Length:

Up to 12 M

Standard:

API 5L, API 5CT, ASTM 53, EN10217, DIN 2458. IS 3589, GB/T3091, GB/T9711
Out Diameter: 355.6mm – 1820mm (14” -160”)

Steel Grade:

API 5L: GR B, X42,X46, X56, X60,X65,X70
ASTM A53: GR A, GR B, GR C
EN: S275, S275JR, S355JRH, S355J2H
GB: Q195, Q215, Q235, Q345, L175, L210, L245, L320, L360- L555

Surface:

Fusion bond Epoxy coating, Coal Tar Epoxy, 3PE, Vanish Coating, Bitumen Coating, Black Oil coating as per customer’s requirement

Application range:

low pressure liquid delivery, such as water, gas, and oil.

Test:

Chemical Component Analysis, Mechanical Properties (Ultimate tensile strength, Yield strength, Elongation), Technical Properties (Flattening Test, Bending Test, Blow Test, Impact Test), Exterior Size Inspection, Hydrostatic Test, X-ray Test.

Mill Test Certificate:

EN 10204/3.1B




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Oil & Gas pipeline

for Construction

Roller Pipe

Thick walled pipe

Mechanical Tolling pipe

UOE pipe


The welding technology used for submerged arc welding of straight welded steel pipe is submerged arc welding technology, which adopts filler and particle protection flux.The diameter of the production can reach 1500mm,LSAW is the English abbreviation of arc-welded straight seam steel pipe, the production process of arc-welded straight seam steel pipe includes JCOE forming technology and rolling forming arc-welded technology.When the diameter is large, two pieces of steel plate may be rolled, so that the phenomenon of double weld.Can be implemented the standard GB/ t3091-2008 low-pressure fluid pipe production standards, GB/ t9711.1-2-1997 oil and natural gas pipe production standards, can also be implemented the API 5L pipe implementation standards.Production material: q195a-q345e;245 r;Q345QA - D;L245 - L485;X42 - X70.The main pressure parameters are 2ST/T, S for yield strength, T for wall thickness.Submerged arc welding has developed into double wire submerged arc welding and multi-wire submerged arc welding, further improving the efficiency.



Deoxidizer effect


For (Als 0.01%) straight welded pipe, the total oxygen content in vd-treated steel was less affected by the two deoxidizers, and the (T.O) was controlled below 20 10-6.Low total oxygen content can be obtained in each process after Si-Al-Ba deoxidation.When si-ca and si-al-ba are used in the straight welded pipe, the quantity and size of inclusions in the smelting process are quite different. The number of inclusions in each process after si-al-ba deoxidization is less than that after si-ca deoxidization, and the size is smaller.When si-ca and si-al-ba deoxidizing agents were used in the straight welded pipe, obvious secondary oxidation took place in the steel liquid during the casting process, but the secondary oxidation of si-al-ba deoxidizing steel liquid was more serious.



There is a big difference between the composition of inclusions and the content of aluminum inclusions in forging materials. When si-al-ba deoxidization is used, the inclusions in forging materials are mainly block-like and chain-like aluminum oxide. When si-ca deoxidization is used in straight welded pipes, the inclusions in forging materials are mainly strip silico-manganese aluminate composite inclusions.The content of aluminum inclusion in Si-Ca alloy deoxidized forging material is less than Si-Al-Ba alloy deoxidized.


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Cangzhou Steel Pipe Group (CSPG)Co.,Ltd.

No.92 JieFang East Road ,Cangzhou City, Hebei,P.R.China.

 has more than eighteen years history company which located in Lecong Iron and Steel World, a well-known steel distribution center in China, with superior geographical position and convenient water and land transportation. 


We are a direct-selling manufacturer specializing in the research and development of spiral steel pipes, steel spiral pipes, anti-corrosion steel pipes inside and outside. Since its inception, the company has been guided by a brand-new thinking of steel pipe product market based on the business philosophy of honesty, pragmatism and knowledge-seeking.



FAQ

Why to choose us?

1.We provide products to our customers individual specifications and special needs with competitive price and best service.

2. Immediate respond

We will be 24/7 on line at your services. Provide one-to-one service with our sincerity.

3. Professional suggestions

We could provide you the professional suggestion with our expertise acumen.

4. Short delivery period

We are based on a long-term cooperation with several major domestic steel company with an outstanding advantage is sufficient supply. Shorter the supplying period.

 

 

 

 

 

 

Edit by Ms. Vicky of  CSPG

Contact us directly by:

Email: ella@cnspipe.com  ,vicky@cnspipe.net

Tel / Whatsapp: +86-180327140146

Skype: cnspipe002





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