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.

 

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Q:Glass fiber reinforced plastic GRE pipe broken hole how to repair and repair?
Don't let the powder go. It is autumn, the temperature is low, so to put more than summer curing agent, as to the exact proportion, I just guess should be: curing agent, accelerator, resin; 1:1.5:8 with glass fiber wrapped around the pipe, coated on the glass fiber cloth to make glass steel with good quickly, let the glass steel the glass fiber cloth fully soaked, waiting for the full glass steel after curing, and then repeated several layers. It will be strong.
Q:What kind of material are the flanges and valves on the GRP pipe?
It's better to use plastic or polyurethane
Q:What are the advantages of glass fiber reinforced plastic sand pipe than HDPE pipe?
Advantages of FRP pipes:1, insulation, acid, alkali and salt corrosion, antistatic, rust, aging is not easy, the service life of up to 50 years.2, non-magnetic, non electrical corrosion, waterproof performance, and can be used in humid environment or water for a long time without deterioration.3, high strength, is the same degree of the original PE pipe is more than 6 times, light weight, smooth wall, perforated cable when the friction coefficient is small, no cable operation.4, heat resistance, antifreeze, fire protection, fire retardant type. It can be used for a long time at -35 ~ 139 degrees celsius.5. The bending modulus is good, the impact resistance is strong, and it solves the defects of metal tube easy to decay and no distortion and elasticity.6, the cable across the bridge and across the river, the use of glass fiber reinforced plastic catheter is more economical and appropriate.7, construction and installation is very simple, no need to tie steel, pouring concrete.
Q:What is the elastic modulus of glass fiber reinforced plastic?
Glass fiber reinforced plastic is another name for glass fiber reinforced plastics, commonly known as FRP (Fiber Reinforced Plastics), that is, fiber reinforced composite plastic. Depending on the fiber used, glass fiber reinforced plastics (GFRP), carbon fiber reinforced plastic (CFRP), boron fiber reinforced composite plastics and so on are classified. It is a kind of composite material made of glass fiber and its products (glass cloth, band, felt, yarn, etc.) as reinforcing material and synthetic resin as base material. Fiber reinforced composites are composed of reinforced fibers and matrix. Fiber (or whisker) diameter is very small, generally below 10 mu m, less defects and smaller, fracture strain of about 30/1000, is brittle material, easy to damage, fracture and corrosion. The matrix is much lower in strength and modulus than fiber, but it can withstand large strains, often with viscoelasticity and elasticity, and is a ductile material.
Q:What is the stiffness of FRP pipe?
The ring stiffness is the comprehensive parameter of the tube's resistance to external pressure. Obviously, the choice of ring stiffness is one of the keys to ensure the safe operation of plastic underground drainage pipe under the external compressive load. If the ring stiffness of the tube is too small, the tube may undergo excessive deformation or buckling failure. On the other hand, if the ring stiffness is chosen too high, the excessive cross section moment of inertia must be used, which will result in too much material and too high cost.
Q:FRP duct material plan is how to mention?
Process design according to user's requirements and choose what material to use. Then according to the drawings and process, calculate the amount of various materials. According to the delivery date and production schedule, you can write the material schedule.
Q:What kind of epoxy resin and formula do you need for making fiberglass pipe?
By explaining the materials, tools, moulds, renovation and repair, process, structure and various products, the latest development direction, process technology and application of FRP products are described.
Q:Where are the advantages of FRP pipes? Long life?
Corrosion resistant and pollution-freeFRP pipes are resistant to acids, alkalis, salts, seawater, untreated sewage, corrosive soil or groundwater, and the erosion of numerous chemical fluids. Glass steel pipe props are non-toxic, stainless, tasteless, water quality without two pollution, and no need for anti-corrosion good features, therefore, in the water supply and drainage industry has been widely used.
Q:How can FRP tanks be connected to steel tubes?
FRP pipe and glass fiber reinforced plastic fittings (three passes, elbows, etc.) generally speaking, the best way is on-site bonding, the quality is stable and convenient.
Q:What's the difference between glass fiber reinforced plastic pipe and glass fiber reinforced sand pipe?
Sand sandwiched glass fiber reinforced plastic pipes only have more than one sand sandwiched with glass fiber reinforced plastic pipes, and sand layer can be understood to replace glass fiber with quartz sand. The sand pipe with the same thickness is compared with the glass fiber reinforced plastic pipe, but the sand holding pipe is cheap, but the strength is poor; and the glass steel pipe is opposite.

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