• Seamless Steel Pipe ASTM A519 4140 made in China System 1
  • Seamless Steel Pipe ASTM A519 4140 made in China System 2
  • Seamless Steel Pipe ASTM A519 4140 made in China System 3
Seamless Steel Pipe ASTM A519 4140 made in China

Seamless Steel Pipe ASTM A519 4140 made in China

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Description of Seamless Steel Pipe

ASTM A519 4140

Seamless steel pipe is a hollow section, no seams of strip steel. Is made from solid tube ingot or the perforation capillary, then through hot rolling and cold rolling or cold dial. Steel pipe has a hollow section, a large number of used for conveying fluid pipe, such as oil, natural gas, coal gas, water and some solid materials, such as pipelines

 

Features of Seamless Steel Pipe

High strength

High toughness

High hardenability

The cold deformation

 

Application of Seamless Steel Pipe

Screw drill tool

Wellhead components

Nipple

Fishing tool

 

Technical Data of Seamless Steel Pipe

(ODXWTXL mm):51--530x4--90x5000-12000(mm)

 

 

ElementCSiMnPSCuNiCuCrMoOSn
Content(wt%)0.380.150.750.800.15
0.430.351.000.0250.0250.250.250.301.100.250.00250.020

 

IMages of Seamless Steel Pipe

Seamless Steel Pipe ASTM A519 4140 made in China

Seamless Steel Pipe ASTM A519 4140 made in China

Seamless Steel Pipe ASTM A519 4140 made in China

 

FAQ

①How 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.

②How 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.

③Why 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.

 

Q:How to repair and repair the broken hole of GRE glass fiber reinforced plastic pipe?
1, clean up the broken hole around, clean; 2, find a piece of iron or glass steel film, slightly larger than the broken hole;
Q:Glass fiber reinforced plastic sand pipe backfill 5m, how much kg pressure?
In general, glass steel pressure refers to the internal pressure, the conveying pressure of water, and you said the backfill produces is the external pressure, often say that the stiffness parameter.
Q:FRP pipe price
FRP prices are calculated in terms of material length and nozzle diameter.FRP duct price is: 3mm specifications 66 yuan / square meter, 4mm specifications 88 yuan / square meter, 5mm specifications 110 yuan / square meter, 6mm specifications 130 yuan / square meter, 7mm specifications 150 yuan / square meter
Q:What is the compressive strength of all kinds of FRP materials?
Heat resistance, frost resistance: at -30 DEG C, still has good toughness and high strength, can be used for a long time in the range of -50 DEG C 80 DEG C, the temperature of resin with special formula can be more than 110 DEG C. 4) of light weight, high strength, convenient transportation and installation by fiberglassreinforcedplastic pipe winding fiber production, the proportion of 1.65 - 2, 1 / 4 only of steel, but the glass steel hoop tensile strength is 180 300MPa, the axial tensile strength of 60 150MPa, similar to alloy steel. Therefore, its specific strength (strength / density) is 2-3 times that of alloy steel, so that it can be designed according to different requirements of users to meet all kinds of internal and external pressure requirements of the pipeline. For the same diameter of single FRP tube, only carbon steel (steel plate) 1 / 2.5, 1 / 3.5 of the cast iron pipe, about 1 / 8 of prestressed reinforced concrete pipe, so the transportation is very convenient for installation. The GRP pipe is 12 meters per length, and can be reduced by 2/3 from the concrete pipe. The socket connection mode of the utility model has the advantages of quick and simple installation, low hoisting cost and improved installation speed. 5) small friction resistance, high transport capacity: glass tube wall is very smooth, roughness and friction resistance is very small. The roughness coefficient is 0.0084, while the n value of concrete pipe is 0.014, and the cast iron pipe is 0.013. Therefore, glass fiber reinforced plastic pipe can significantly reduce the loss of fluid pressure along the course and improve the conveying capacity.
Q:What kind of material does glass steel ship honeycomb board use?
Analysis of glass steel tube and glass steel tube cellular communication used in communication network construction, is currently used PVC bellows and PVC honeycomb tube, pipe and pipe crossing is the use of plastic pipe or galvanized steel pipe.
Q:What are the materials used in smoke exhaust pipes?
Different uses of flue gas pipes are also made of different materials. Refer to
Q:Uneven settlement of the foundation, can lead to glass fiber reinforced plastic underground water pipes burst, what is the principle?
Dislocation will cause the pipe to burst. The pressure is different, and the pipe will burst
Q:What are the construction methods of glass fiber reinforced plastic paint anticorrosive pipes?
Oil and gas pipelines used for twenty years, basically no corrosion phenomenon. As part of a group of coal tar epoxy primer and topcoat are based on epoxy resin and coal tar as the main film-forming material, add a variety of anti rust paint, insulating filler, toughening agent, leveling agent, diluent, anti settling agents and other materials, the B component is modified amine curing agent or curing agent the main material, adding fillers. When the product is sold, the A and B parts are supplied together, and the mixture is mixed in proportion during construction.
Q:Are FRP pipes still developing?
Although high-end composites have all sorts of benefits, glass tubes can replace traditional plumbing materials, at least far away.
Q:How can FRP tanks be connected to steel tubes?
Glass tube and carbon steel pipe connection, at present, the most reliable way of connection is only flange connection, other such as on-site bonding, because the two kinds of material is not the same, the quality is not very stable after bonding!

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