High quality Roller pipes from China

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Product Description:

Outside diameter

1/2”-12

Wall Thickness

1.0 -12mm

SCH40,60,80, etc.

Tolerance

±5%

Material

Q195,Q215,Q235,Q345

Quality grade

First grade

Section Shape

Round

Surface Treatment

Hot rolled and ERW

Technique

Hot rolled

Ends

Threaded Ends, Grooved Ends

Length

Less than 12m

MOQ

10 Metric Ton or as your request if normal size

Deliver Time

Stock

Package

Nude pipe in bundle or as your request

Payment terms

T/T,L/C

Standard

GB/T3091-2008; BS1837-1985; ASTM A53/A53M-07;

ASTM A513-07; ASTM A252; JIS G3444-06; JIS G3452-2010;

EN10255; DIN2440

Main Usage

Relevant Size

1. Water Pipe

Material: Q195/Q215/Q235/Q345B

Outside Diameter: 60-273mm

2. Threaded/Screwed Pipe

Material: Q195/Q215/Q235/Q345B

Outside Diameter: 21.3-165.1mm

3. Structural Steel Pipe

Material: Q195/Q215/Q235/Q345B

Outside Diameter: 21.7-190.7mm

4. Scaffolding Pipe

Material: Q195/Q215/Q235/Q345B

Outside Diameter: 48mm

5. Straight Seam Welded Pipe

Material: Q195/Q215/Q235/Q345B

Outside Diameter: 48-273mm

6. Steel pipes with a longitudinal ERW  

Material: Q195/Q215/Q235/Q345B

Outside Diameter: 21.3-273.1mm

Standard: GB/T 3091-2008

Quality Guarantee

Certificate: ISO9001:2008 by international quality system.

Steel material and various physics and chemistry property service.

FAQ

1. How about the Delivery Time?

 The goods will be produced since we getting your deposit by T/T or Your original L/C.

 For normal size, some stocks in our factory now, we can supply once you need.

2. What kind of payment does your company support?

 T/T, 100% L/C at sight, Cash, Western Union are all accepted.

3. What is the M.O.Q?

 Min Order Quantity.

 Generally speaking, the MOQ is 10 metric ton per size,

 however, we can provide you samples for quality inspection.

4. Do you charge for the samples?

 According to our company principle, we just charge for samples, you pay for the freight charge.

 However, we will return the samples fees back to you during the next order.

5. How about your Feature and Advantage?

 Firstly, we are a 11 years factory, our price is competitive and our quality is the NO.1.  

 Then we do some special service for export: Thread, Oil Coating, Groovy,

 Standard Export Packing, Hydraulic Pressure, Automatic painting, stamping,

 Steel material and various physics and chemistry property, zinc ingot element testing service. etc.

6. How to know the Quality Guarantee:

 Visit Our factory is the best way to know each other more.

 ISO9001:2008 by international quality system Certificate and The Third Inspection can prove our quality.

 We will attach some relevant photos via email so show our factory, machine and products for you.

7. Can you tell me your main customers information?

 That is our customers privacy, we should protect their information.

 At the same time, please rest assured that your information is also safe here.


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Remaining: 4000 characters

- Self introduction

- Required specifications

- Inquire about price/MOQ

Q:How much is the tube?
The first prerequisite we need to determine is: what are the specifications of the steel pipe mentioned? Such as the commonly used steel pipe specifications: diameter 108*4.5, diameter 219*6, diameter 377*10, diameter and wall thickness of steel pipe with different specifications, different weight, so the steel price per meter is different.
Q:Which is better, galvanized steel pipe or stainless steel?
Most of the use requirements are to maintain the original appearance of the building for a long time. In determining the type of stainless steel to be chosen, the main consideration is the aesthetic standards required, the corrosivity of the atmosphere in the area, and the cleaning system to be adopted. However, other applications increasingly seek only structural integrity or watertightness. For example, the roof and side walls of industrial buildings. In these applications, the construction cost of the owner may be more important than the aesthetic, the surface is not very clean can also. The use of 304 stainless steel in a dry indoor environment is quite effective.
Q:The difference between 12Cr1MoVG alloy steel tube and 15CrMo
With this kind of steel manufacturing products, usually by heat treatment (normalizing and tempering); parts made before use, usually need to go through refining or chemical surface treatment (carburizing and nitriding), surface quenching or high-frequency quenching treatment. Therefore, according to the chemical composition (mainly carbon content), heat treatment process and use of different, such steel can be roughly divided into carburizing, quenching and tempering and nitriding steel three.
Q:Can galvanized pipe be welded with seamless steel tube? What should I do to connect?
Processing method is very simple, I suggest you add blue disk connection, you can not use welding ~ ~ ~!The gas pipe is the best galvanized pipe, mainly play a role in anti-corrosion ~ ~ ~ ~ if you must use seamless connection can.When welding, can open a certain groove, use galvanized material electrode, but the premise is must be welded with seamless tube firmly.
Q:What does cathodic protection of steel tubes mean?
There are two ways of cathodic protection: sacrificial anode, cathodic protection and impressed current cathodic protection.Sacrificial anode: connect a living metal or alloy to a protective metal to form a galvanic cell. The active metal replaces the protected metal to lose electrons so that the protected metal is not corroded.
Q:How to identify stainless steel pipe and steel pipe?
Steel pipe according to the production method can be divided into two categories: seamless steel pipe and pipe joints, pipe joints as welded steel pipe.1. seamless steel tube according to the production methods can be divided into: hot-rolled seamless pipe, cold drawn tube, precision steel tube, heat expansion tube, cold spinning tube and extrusion tube.Seamless steel tubes are made of high quality carbon or alloy steel. They are hot-rolled and cold-rolled (drawn).Bundled steel pipe2. welded steel pipe for different welding process and divided into the furnace pipe welding (ERW) pipe and automatic arc welding, because of the different forms of welding seam welded pipe and spiral welded pipe is divided into two kinds, end its shape is divided into circular welded and shaped (square, flat) pipe.
Q:Galvanized steel pipe, PPR pipe, PE pipe, U-PVC pipe and HDPE double wall corrugated pipe and what is the difference between the characteristics of
Galvanized steel pipe is a kind of antirust steel pipe, often used in relatively high water supply pipeline or hot water pipeline, the price is higher, can use for at least 30 years;PPR pipe is a kind of polypropylene plastic, which is commonly used in environmental protection plastic pipes, but only suitable for low temperature occasions. It is mainly used for water supply;
Q:Hot galvanized steel pipe for use?
1, galvanized layer uniformity: steel pipe sample in copper sulfate solution immersion 5 times continuously, must not turn red (copper plated)2, surface quality: galvanized steel pipe surface should be complete galvanized layer, must not have plating on the black spots and bubbles exist, allow little rough surface and local zinc tumor exists.3, galvanized layer weight: according to the requirements of the buyer, galvanized steel pipe can be used for zinc layer weight determination, its average value should be not less than 500g/ square meters, and any sample shall not be less than 480g/ square meters.
Q:What is the buckling type thin-wall steel pipe? What is a tight set of thin-walled steel tubes? What's the difference between the two?
The nut body and the junction box are connected at one end by adopting metric fine tooth thread, and the pipe is connected with the pipe, and one end is the same as the straight pipe joint (direct). Withhold the box joint points inside and outside teeth two. The diameter of straight pipe joint is divided into 16mm, 20mm, 25mm, 32mm, 40mm, 50mm.
Q:What does "steel pipe SC" mean?
SC is an ordinary welded pipe, equal to water professional DN, SC is welded steel pipe concealed, general pipe wall is relatively thick, S represents pipe material, C represents laying mode, TC stands for wire pipe concealed, pipe wall is thinner.

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