• Construction Material Q235 Black Welded Tubular Steel System 1
  • Construction Material Q235 Black Welded Tubular Steel System 2
Construction Material Q235 Black Welded Tubular Steel

Construction Material Q235 Black Welded Tubular Steel

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1Construction Material Q235 Black Welded Tubular Steel:

ERW steel pipe is electric resistance welding, the abbreviation for ERW for transporting oil and natural gas vapor liquid objects, can meet the requirements of high and low pressure, the transport in the world with pipe sector accounted for a pivotal position.

 

2‍‍Main Features of Construction Material Q235 Black Welded Tubular Steel:

• High manufacturing accuracy

• High strength

• Good visual effect

• Reasonable price  

• Small inertia resistance

• Strong heat dissipation ability

 

3Construction Material Q235 Black Welded Tubular Steel Specification

Standard

GB, DIN, ASTM

ASTM A106-2006, ASTM A53-2007

Grade

10#-45#, 16Mn

10#, 20#, 45#, 16Mn

Thickness

1 - 33 mm

Section Shape

Round

Outer Diameter

21 - 610mm

Place of Origin

Tianjin, 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 Construction Material Q235 Black Welded Tubular Steel: 

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.

 

6‍‍ Welded Black ERW Steel Pipe Images ‍‍

Q:How do steel pipes handle thermal expansion?
Steel pipes handle thermal expansion by expanding and contracting along their length due to changes in temperature. This expansion is accommodated by allowing the pipes to move freely or by using expansion joints, which can absorb the thermal expansion and prevent damage or failure.
Q:What is the minimum wall thickness for steel pipes?
The minimum wall thickness for steel pipes depends on various factors such as the pipe size, pressure rating, and intended use. However, as a general guideline, the minimum wall thickness for steel pipes is typically determined by industry standards and regulations, and it can range from a few millimeters to several inches. It is important to consult specific codes and standards relevant to the application to accurately determine the required minimum wall thickness for steel pipes.
Q:How do steel pipes handle water hammer?
Steel pipes handle water hammer by absorbing the sudden pressure surges caused by rapid changes in water flow. The inherent strength and rigidity of steel pipes allow them to withstand the impact of water hammer without experiencing significant damage or failure.
Q:Which is better, galvanized steel pipe or stainless steel?
Stainless steel is good.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:How are steel pipes used in the construction of railways and transportation systems?
Steel pipes are used in the construction of railways and transportation systems primarily for their durability and strength. They are utilized for various purposes such as the fabrication of tracks, bridges, tunnels, and support structures. Steel pipes provide a reliable and long-lasting solution for the transportation industry, ensuring the safety and efficiency of railway systems.
Q:How do steel pipes handle chemical substances?
Steel pipes are highly resistant to chemical substances due to their durability and corrosion resistance. The smooth interior surface of steel pipes prevents the accumulation of chemical deposits, ensuring minimal reaction with the substances being transported. Additionally, steel pipes can be coated or lined with protective materials to further enhance the resistance against specific chemicals, making them a reliable choice for handling various chemical substances.
Q:What are the different types of coatings used on steel pipes?
There are several different types of coatings used on steel pipes, including polyethylene, fusion bonded epoxy, coal tar enamel, and asphalt enamel. These coatings provide protection against corrosion, abrasion, and other forms of damage, ensuring the longevity and durability of the steel pipes.
Q:How are steel pipes used in the manufacturing of chemical processing plants?
Steel pipes are commonly used in the manufacturing of chemical processing plants due to their durability, high strength, and resistance to corrosion. These pipes are typically used for the transportation of various chemicals, gases, and liquids within the plant. They help maintain the integrity of the materials being processed and ensure the safe and efficient operation of the plant.
Q:Is steel pipe made of profiles?
According to the shape of the cross-section, the steel is generally divided into profiles, plates, pipes and metal products in four categories.Therefore, the steel pipe belongs to the pipe, not the profile.
Q:What is the weight of hot galvanized steel tubes? DN150 4mm wall thickness
DN150 4mm wall thickness welded steel pipe theoretical weight is 16.21kg/m, galvanized steel pipe should be multiplied by the weight coefficient after galvanizing, C, DN150, wall thickness of 4mm, C=1.032, DN150, theoretical weight and wall thickness of 4mm galvanized steel is 1.02*16.21=16.7287kg/m = 16.73kg/m.

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