• Large diameter longitudinal submerged arc welded pipe materials System 1
  • Large diameter longitudinal submerged arc welded pipe materials System 2
  • Large diameter longitudinal submerged arc welded pipe materials System 3
Large diameter longitudinal submerged arc welded pipe materials

Large diameter longitudinal submerged arc welded pipe materials

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Loading Port:
Tianjin
Payment Terms:
TT or LC
Min Order Qty:
28 m.t.
Supply Capability:
9000 m.t./month

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Product Description:

1Structure of Welded Steel Tube: 

Welded Steel Tube is formed by drawing a solid billet over a piercing rod to create the hollow shell. We are company that have many years experience and professional manager team and engineer team and sales team, sure we will provide you high quality of welded pipe and professioanl service.

 

2‍‍Main Features of the Welded Steel Tube:

• High manufacturing accuracy

• The higher strength

• The small inertia resistance

• Strong heat dissipation ability

• Good visual effect

• Satisfy price 

 

3Welded Steel Tube Specification

Standard

GB, DIN, ASTM

ASTM A106-2006, ASTM A53-2007

Grade

10#-45#, 16Mn

10#, 20#, 45#, 16Mn

Thickness

8 - 33 mm

Section Shape

Round

Outer Diameter

133 - 219 mm

Place of Origin

Shandong, China (Mainland)

Secondary Or Not

Non-secondary

Application

Hydraulic Pipe

Technique

Cold Drawn

Certification

API

‍Surface Treatment

factory state or painted black

‍Special Pipe

API Pipe

Alloy Or Not

Non-alloy

Length

5-12M

Outer Diameter

21.3-610mm

Grade 

20#, 45#, Q345, API J55, API K55, API   L80, API N80, API P110, A53B

Standard

ASME, ASTM

 

1) Material:20#(ASTM A 106/A53 GRB.API5LGRB,GB),45#,16Mn,10#.

2) Specification range:OD:21.3-610mm,WT:6-70mm,length:6-12m or according to the requirement of clients.

3) Excutive standards:GB,ASME API5L.ASTM A 106/A53,Despite of the above standards,we can also supply seamless steel pipe with standard of DIN,JIS,and so on,and also develop new products according to the requirements of our clients!
4) Surface:black lacquered,varnish coating or galvanized.
5) Ends:Beveled or square cut,plastic capped,painted.
6) Packing:bundles wrapped with strong steel strip,seaworthy packing. 

 

4Packaging & Delivery

Packaging   Details:

seaworthy   package,bundles wrapped with strong steel strip

Delivery   Detail:

15-30days   after received 30%TT

 

5FAQ of Welded Steel Tube:  

How is the quality of your products?
     We have many years business experience in this area, and we have professional engineer and manager team and sure we can provide you high quality production and professional service.

How about price?
    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?
    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.

 

6‍‍ Welded Steel Tube Images

 

 

 

Q: What are the common sizes of steel pipes?
Common sizes of steel pipes can vary depending on the application, but some common sizes include 1/2 inch, 3/4 inch, 1 inch, 1.5 inches, 2 inches, 3 inches, 4 inches, 6 inches, 8 inches, 10 inches, and 12 inches in diameter.
Q: Are the welded and galvanized tubes the same weight?
The same specifications of welded pipe and galvanized pipe weight is not the same, the general welding tube weight, galvanized pipe light.
Q: How do you protect steel pipes from external damage?
One way to protect steel pipes from external damage is by applying a protective coating or paint. This can help prevent corrosion and other forms of physical damage caused by exposure to moisture, chemicals, or rough surfaces. Additionally, using pipe supports and installing guards or barriers can help shield the pipes from potential impact or accidental damage. Regular inspections and maintenance are also crucial to identify and address any signs of damage or wear in a timely manner.
Q: Is the diameter of the steel tube indicated by the outer diameter by the wall thickness or by the inside diameter by the wall thickness?
1, DN refers to the nominal diameter of the pipe, the outer diameter and diameter of the average. The value of DN, the value of =De, the thickness of -0.5* tube wall. Note: This is neither outer diameter nor inner diameter. Water and gas transmission pipe (galvanized steel pipe or non galvanized steel pipe), cast iron pipe, steel plastic composite pipe and polyvinyl chloride (PVC) pipe, etc., shall be marked with nominal diameter "DN" (such as DN15, DN50).2, De mainly refers to the pipe diameter, PPR, PE, PP pipe diameter, generally use the De label, are marked as outer diameter and thickness of the form, De25 * 3.3 and D generally refer to the inner diameter of the pipe.4, d concrete pipe diameter. Reinforced concrete (or concrete) pipe, clay pipe, acid resistant ceramic tube, pipe and other pipe diameter gangwa, should be said with inner diameter of D (such as D230, D380 etc.)5, Phi represents the diameter of the ordinary circle. It can also indicate the outer diameter of the pipe, but it should be multiplied by the wall thickness at this time. Such as: Phi 25 x 3, indicating outer diameter 25mm, wall thickness of 3mm pipe.
Q: What's the difference between hot dip galvanizing and cold galvanizing? Which kind of galvanizing method is good?
Cold galvanizing is zinc plating, the general surface is relatively smooth, no zinc flowers, there are two kinds of resistance to fingerprints and non - Fingerprint
Q: Can steel pipes be used for conveying hydraulic fluids?
Indeed, hydraulic fluids can indeed be conveyed using steel pipes. The reason behind this lies in the fact that steel pipes possess remarkable tensile strength and are highly resistant to intense pressure, rendering them ideal for hydraulic purposes. They are capable of enduring the frequently encountered high pressures and temperature fluctuations within hydraulic systems. Moreover, steel pipes boast longevity and durability, guaranteeing dependable and efficient fluid transmission in hydraulic systems. Nevertheless, it is crucial to verify the compatibility between the steel pipes employed and the particular hydraulic fluid being conveyed, in order to prevent corrosion or deterioration of the pipe material.
Q: How are steel pipes classified based on their diameter?
Various categories exist for classifying steel pipes based on their diameter. The most commonly used classification system for steel pipes is the nominal pipe size (NPS), which is a set of standard sizes in North America that designate the diameter of the pipe. The NPS is expressed in inches and represents the approximate inside diameter (ID) of the pipe. Steel pipes can be divided into three main categories based on their diameter: small bore, medium bore, and large bore. Small bore pipes have an NPS of 2 inches and below, medium bore pipes have an NPS between 2 and 24 inches, and large bore pipes have an NPS greater than 24 inches. In addition to the NPS classification, steel pipes can also be classified based on their actual outside diameter (OD). This classification is used to determine the compatibility of pipes with fittings and other components. The OD classification is typically expressed in inches or millimeters. Overall, the diameter-based classification of steel pipes provides a standardized system that facilitates the easy identification and selection of pipes for various applications. It ensures compatibility and enables the efficient installation and effective functioning of piping systems in industries such as construction, oil and gas, plumbing, and more.
Q: How are steel pipes used in bridge construction?
Steel pipes are commonly used in bridge construction for various purposes. They are often used as piles to provide structural support to the bridge foundation, ensuring stability against soil movement and water pressure. Additionally, steel pipes are used as structural components in the bridge's superstructure, such as for trusses and beams, due to their high strength and durability. Steel pipes also play a crucial role in carrying utilities, such as water and gas pipelines, across the bridge. Overall, steel pipes are an essential element in bridge construction, providing strength, stability, and functionality to the structure.
Q: How are steel pipes insulated to prevent heat loss?
Steel pipes are typically insulated to prevent heat loss by wrapping them with insulation materials such as mineral wool, fiberglass, or foam. These insulation materials provide a barrier that traps heat within the pipes, preventing it from being lost to the surrounding environment. Additionally, pipes may also be covered with an outer protective layer, such as aluminum or PVC, to further enhance insulation and protect against external elements.
Q: What are the common grades of steel used in pipes?
The common grades of steel used in pipes include carbon steel, stainless steel, and alloy steel.

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