seamless grooved pipe for fire fighting

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Product Description:

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:Is there a weld on the outer wall of seamless steel tube?
Seamless steel pipe's inner wall, outer wall, section, cross section can not see the weld seam. Because seamless steel pipe is a molding product, no late roll pressure, welding and other processes. No section, inner wall, outer wall or section, as long as there is weld, it is not seamless steel tube. The inner wall can not see the outer wall of welding seam, but it can be seen that the weld products are fake or polished goods. Some products can not be seen without friction and have weld seams on the outside wall. They are seamless treated steel tubes and are polished goods. The price is much different from the real seamless steel tube. Some bad wounding, confusing concepts, earn illegal profits.
Q:Fastener type steel pipe scaffold external parts name
Steel pipeScaffold steel pipe should adopt outer diameter 48mm and wall thickness 3.5mm welded steel pipe, also can use outer diameter 51mm and wall thickness 3.1mm welded steel pipe. For horizontal horizontal rods, the maximum length of steel pipe shall not be greater than 2m; other poles shall not be greater than 6.5m, and the maximum mass of each steel tube shall not exceed 25kg, so as to be suitable for manual handling.
Q:Theoretical weight of 25*25*1.5 square steel tubes
The theoretical weight of 25*25*1.5 square steel tubes is 1.075kg/m.
Q:What are the main aspects of precision steel tubes?
Its inside and outside diameter size can be accurate to less than 0.2mm, and it is widely used in the manufacture of precision machinery parts and engineering structure when the bending resistance and torsion strength are the same. It is also used to produce all kinds of conventional weapons, guns, shells, bearings and so on.
Q:Which is more load-bearing, the same thickness of steel pipe and steel bar?
The magnitude of the axial force acting on the steel member is only related to three factors, namely, the strength of the material, the sectional area of A and the longitudinal stability factor of F.
Q:Seamless steel tube with the tube with what is the difference?
At present there are some seamed steel pipe seamless treatment tube, it is the weld annealing treatment, eliminate the residual stress of the weld, the weld and base material, the pressure range of basic and seamless pipe is. May also consider the use of.
Q:What is the process of spiral steel tube production?
Visual inspection: some basic parameters are checked by professional technicians.6. ultrasonic inspection: 100% inspection of inner and outer weld seam and parent material on both sides of weld seam.
Q:What is an electric welded pipe (EFW)? Seek help!
According to the operation requirements of the electric welding machine, connect the lead wire and set up the proper welding parameter of the electric welding machine, which can be operated by manual or automatic two input methods.After checking, start the electric welding machine and enter the welding process. When the welding time is reached, the machine will automatically enter the cooling state.When the pipe completely removed after cooling, electric fusion welding machine.Cutting the pipe with the cutting tool of plastic pipe or fine toothed saw with cutting guide device, and making its end face perpendicular to the axis of pipe. Remove the edges of the edges with a knife, scrape the weld area in the pipe or spigot end and clean the weld area.Should use the special fixture as far as possible to secure the components to be connected, and the roundness of the pipe shall not exceed 1.5% of the outer diameter of the pipe, or it should be corrected on the corresponding fixture.
Q:What time what time for gas pipeline steel pipe PE pipe
PE pipe is suitable for medium voltage and low voltage 0.4MPa below the pressure pipe wall thickness. According to the different pressure is not the same, so the steel tube can be used for high pressure.
Q:The difference between carbon and welded steel tubes
Seamless steel pipe because there is no weld, so can withstand greater pressure, boiler tubes are generally used seamless steel pipe

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