hot dip galvanized seamless grooved pipe

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Product Description:

Galvanized pipe

Our company is specialized in the supply of Hot Dipped Galvanized Pipes. We supply stee pipesl with very competitive price to meet customers' needs with the satisfied service and high standard quality.



Name

galvanized pipe with the standard quality

Material

Q195, Q215, Q235, Q345, STK500

Specification

O.D.: 20- 273.1MM  W.T.: 0.8 - 5mm

Length

5.8m, 6m, 11.8m or 12m, or per the buyers demand

Surface treatment

Oil-dip, Varnish, Passivation, Phosphating, Shot Blasting.

Certificates

BS1387-1985, DIN2440/2441, JIS-G3444 and ASTM

Manufacture Technique

Seamless

Section Shape

Round

End

A): GTC (galvanized threaded and coupling)
B): GPE (galvanized plain end)

Weight

Billing on the basis of theoretical weight

Packaging Details

Export packing or negotiation

Trade Terms

FOB/CFR/CIF

Payment Terms

L/C  T/T

Usage

Petroleum casing pipe/etroleum cracking pipe/gas cylinder tubes/highpressure boiler tubes/ high pressure chemical fertilizer pipe, ship tube

Delivery Time

7-30 days OR upon the negotation

Minimum Order Quantity

20/50/100 MT

Supply Ability

1000 Ton/Month

Inspection

Chemical Composition Inspection, Mechanical Properties Test(Tensile Strength,Yield Strength, Elongation, Flaring, Flattening, Bending, Hardness, Impact Test), Surface and Dimension Test,No-destructive Test, Hydrostatic Test.




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Q:What are the advantages of PVC pipe and galvanized steel pipe?
This is different in different fields, in fact, the combination of PVC pipe and galvanized steel pipe becomes plastic steel pipe.The steel plastic pipe is in the internal and external combined with a layer of plastic pipe material and obtained a pipe, it has high mechanical strength, the steel pipe has the advantages of high impact resistance, and corrosion resistance of plastic material, has the advantages of high and low grade health fluid resistance and scaling.The steel pipe used by our company is produced by Benxi Steel, which is well known both at home and abroad. It has the advantages of low phosphorus, low sulfur and high mechanical performance. It can meet the requirements of users.
Q:What type of steel pipe dance is used in general?
The steel pipe fittings used in the pipe dance are made of smooth surface material, usually chrome or polished by steel or iron.
Q:Seamless steel pipe is how to do it?
Probably with 10, 20, 30, 35, 45 and other high-quality carbon steel, 16Mn, 5MnV and other low-alloy structural steel or 40Cr, 30CrMnSi, 45Mn2, 40MnB and other composite steel hot-rolled or cold rolled.
Q:What does GALV mean in a steel tube?
Steel tube (Steel pipe) production technology development began in the bicycle manufacturing industry, the rise of the early nineteenth Century during the oil development, the two world war ships, boilers, aircraft manufacturing, manufacturing of power boiler after the Second World War, the development of chemical industry of petroleum and natural gas drilling and transportation, will effectively promote the the yield and quality of varieties, the development of steel tube industry.
Q:Heating system DN40 and DN32 welded steel pipe how to connect?
As for the flange connection: low pressure pipeline is generally not used in this way, can be divided into threaded flanges and flange welding flange, and the flange connecting pipes of different diameters, only the welded flange to diameter, said in a low pressure pipeline which has low pressure pipe connection make an unnecessary move, this is not much, but there are also people with non the standard flange for connecting different pipe diameter, which is not consistent with the technical specification!
Q:What's the actual size of the DN25?
DN25 refers to the theoretical size of the inner hole of the pipe. That is to say, the theoretical dimension of the inner diameter of the pipe is 25 (the metric tube refers to the inner diameter, and the English tube is also to indicate the inner diameter, for example: 3/8, the inner diameter is 9.525, and the diameter of the 1/2 is 12.7, and the diameter of the 5/8 is 15.875). The outer diameter is theoretical in diameter, plus the wall thickness specified by the state (which is artificially specified and has no formula)The theoretical diameter of DN25 is 25, and the outer diameter is Phi 33.7 and phi 32(but there is also the outside diameter of the mark. The mark is: the outer diameter * wall thickness, such as: 32 * 2, that is to say, the outer diameter is 30, the inner diameter is 26)
Q:What is the difference between the stainless steel pipe welded pipe and seamless pipe?
Grain size: usually, the grain size of the metal is related to the heat treatment temperature and the time at which the metal is kept at the same temperature. Therefore, the welded pipe and seamless tube annealing of the same grain size. If the minimum tube cold treatment, the grain size of the weld metal is smaller than the grain size, welding or grain size is the same.Strength: the strength of the pipeline in the composition of the alloy and alloy containing the same and the same heat treatment of seamless tube and seamed tube essentially consistent strength. After the tensile test and three-dimensional vibration test, tube tearing almost all occurred in the welding point or away from the heated area where. This is because there is little impurity in the weld and the nitrogen content is slightly higher, so the strength of the welded joint is better than that of other parts. However, the ASME Boiler and Pressure Vessel Association believes that the seamed tube can withstand 85% of the allowable pressure, which is mainly due to improved welding equipment data collection prior to today. The provisions of ASME 100% completely under license by ultrasonic testing pressure tube. Similarly, Europe and Asia also stipulates that can ensure the quality of welding performance by eddy current test tube, the eddy current testing is subject to legal procedures and licensed institutions. Trent's eddy current test was approved by the Swedish power division. ASME believes the current loss is relatively small, high-quality performance based on the seamed tube.
Q:Difference between seamless steel pipe and welded pipe
Seamless steel pipe can be used in various industries, such as liquid, pneumatic, pipeline and gas pipeline.
Q:How to perform nondestructive inspection of steel tubes
Radiographic inspection (RT)One of the earliest nondestructive testing methods is widely used in the inspection of internal defects of metals and non-metallic materials and products, with a history of at least 50 years. It has incomparable unique advantages, that is to test the correctness, reliability and intuition of the defects, and the ray film can be used for the analysis of defects and as a quality certificate archive. But this method also has the disadvantages of more complicated equipment and higher cost, and should pay attention to the protection of radiation.
Q:Seamless steel pipe 8162 and 8163 what is the difference?
GB 8162 is the structure of the tube, there is no need for flaw detection, the use of mechanical processing, stents;

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