• Composite Pipes ASTM A519 4140 Seamless Steel Pipe Made in China System 1
  • Composite Pipes ASTM A519 4140 Seamless Steel Pipe Made in China System 2
  • Composite Pipes ASTM A519 4140 Seamless Steel Pipe Made in China System 3
Composite Pipes ASTM A519 4140 Seamless Steel Pipe Made in China

Composite Pipes ASTM A519 4140 Seamless Steel Pipe 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: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 are the functions of glass fiber reinforced plastics?
The jet can reduce the weight of the aircraft by using it as an oil tank and pipe. Astronauts aboard the moon, who carry miniature oxygen bottles on their backs, are also made of glass fiber reinforced plastic. Glass fiber reinforced plastics are easy to process, stainless, and do not need paint. Our country has been widely used in glass steel manufacturing all kinds of small boats, boats, yachts, and automobile manufacturing, save a lot of steel.
Q:What are the materials used in smoke exhaust pipes?
The exhaust pipe in the environmental protection system is divided into: suction duct, mine gas drainage pipe, coating cloth cylinder etc. in mine industry and construction industry in the central air conditioning system of factory and office building, with dust, smoke, oil, exhaust pipe, industrial environment with comfortable air supply pipe or post industrial pollution control. The exhaust pipe in accordance with the use of this distinction is several, the exhaust pipe is generally not used in building drainage pipeline in the smoke tube, because the rain is very prone to corrosion of steel, so in general use PC tube drain pipe.
Q:What is the heat preservation of the plumbing pipe now? I'd like to use fiberglass Seek help from a master
Glass cotton + glass steel pipe shell: high cost, long construction cycle, good insulation effect.Rock wool insulation: high prices, poor construction conditions, poor heat preservation, water after a mess.Polyurethane foam + yellow jacket: high price, good insulation effect.Galvanized sheet + glass cotton: cheap price, quick construction, good insulation effect.
Q:Can FRP pipes be used in heating pipes?
Glass fiber reinforced plastic is glass fiber reinforced plastic, so it is similar to plastic in some physical propertiesIt has a high temperature resistant resin, but it costs a lot. Most resins do not work at high temperatures for long periods. So personally think it is not suitable for use.
Q:What are the specifications of glass fibre reinforced plastic cable pipes? What are they?
FRP cable pipe is a new type of composite material, it mainly resin as adhesive, glass fiber as reinforcing agent, quartz sand as the supplementary material, formed by microcomputer control winding machine manufacturing, it has the strength of resistance to high pressure, weight, easy installation, safe and reliable, strong performance of insulation, corrosion can be anti corrosive the items, the anti parameter Water Leakage ability, but also has the advantages of long service life, can reach more than 50 years, because the FRP cable protection pipe set has various advantages of the industry, the performance has exceeded the same industry plastic pipe performance, it becomes popular industry engineering personnel.
Q:The outer thermal protection layer of the pipeline is made of GFRP. Which guy knows the construction method?
The basic thing is to finish the heat preservation. Soak the PP cloth soaked in the solution and finish it. Then brush it one or two times. The key is to make the solution, with water heating method, or else not. If you want to strengthen the strength, you can finish the insulation, and then wrapped a layer of 10---20 purpose wire mesh, and then made glass fiber reinforced plastic
Q:What is the structure and function of glass fiber reinforced plastic lining?
The role of FRP lining, corrosion protection, generally attached to the carbon steel container wall, can avoid the use of stainless steel, saving costs. FRP can resist acid and alkali corrosion, PH2-12 or so no problem, but not high temperature, the temperature is higher than 80 degrees, more dangerous, will dissolve.
Q:What are the main materials used for steel pipes?
The ventilation pipe in the industrial and construction projects, mainly related to application: purification system of electronic industry clean workshop, purifying system of medicine and food aseptic workshop, hotels, hospitals, shopping malls and office buildings factory of central air-conditioning system, industrial pollution control, dust, oil and smoke exhaust pipe, industrial environment or position by giving comfort the wind pipe, coal mine gas drainage system, gas pumping for coal mine environment control air supply system and so on..;
Q:Mending method for glass fiber reinforced plastic pipe
Other repair methods: choose resin, accelerator, curing agent, high quality glass fiber cloth. Don't let the powder go. It is autumn, the temperature is low, so to put more than summer curing agent, the proportion of the curing agent, accelerator, resin; 1:1.5:8 with glass fiber wrapped around the pipe, coated on the glass fiber cloth for glass steel with a good quick, let the glass steel glass fiber cloth fully soaked, waiting for glass steel fully cured, and then repeated several layers. It will be strong.

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