Straight Seam Submerged Arc Welding Steel Pipe made in China

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Description of Seamless Steel Pipe

Straight seam submerged arc welding steel pipe

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



Natural gas

Marine pipeline


Technical Data of Seamless Steel Pipe





Grades API 5L Gr.A-X100 GB/T9711 L210-L690, GB/T3091 Q235-Q690


IMages of Seamless Steel Pipe

Straight Seam Submerged Arc Welding Steel Pipe made in China

Straight Seam Submerged Arc Welding Steel Pipe made in China

Straight Seam Submerged Arc Welding Steel Pipe made in China



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:Is it useful to make gas pipelines with glass steel pipes? Or the idea that the technology is mature?
Now the general use of steel pipe with PE pipe is very good, I don't FRP clearance, but there may be enamel can also withstand the pressure vessel, 3 class.
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 qualifications do FRP pipes need to export to Australia?
We often have glass steel pipe or other products, have not heard what the other party needs special qualifications, as long as the customers are willing to order your goods, general foreign customers before shipment is to inspection, acceptance, what qualifications do not need. The key is whether domestic related requirements are met. Besides, you can ask the customer directly
Q:The role of glass fiber reinforced plastic cooling towers
Is specializing in the production of glass steel cooling tower, cooling tower, cooling tower, commonly known as cooling tower, glass tower, tower, main square, round, crossflow and counterflow, no filler spray cooling tower series.
Q:What is the elastic modulus of glass fiber reinforced plastic?
If so, the modulus of elasticity is 72000MPa, and the glass is isotropic, so the modulus of elasticity in the three directions is the value.
Q:What are the standards for FRP pipes?
The pressure test pump passes directly through the test hole on the top of the pipe. The water pressure of the pipeline working pressure of 1.5 times after the pump stops (during the operation to open the drain valve exhaust), observation of 2min, the pressure drop value does not exceed the test pressure and the nozzle 5%, no leakage, nozzle pressure test is qualified. If the pressure drop is relatively fast, it shows the sealing effect is not good, to re install, to ensure that the FRP pipe pressure test system overall success.
Q:What are the main points for the installation of FRP ducts?
Underground parking, commercial and residential buildings, shopping malls, civil air defense projects, office buildings and so on
Q:FRP acceptance standard
Perform hydrostatic test. In order to comprehensively check the installation quality of pipes, the pressure test shall be carried out according to the test methods stipulated in the code for construction and acceptance of water supply and drainage pipe works, and the allowable seepage water quantity shall be carried out according to the standards of the steel pipe.
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 I make up the broken glass fiber?
If the glass fiber reinforced plastic pipe is broken, how do you fix it and repair it better?. It's better to replace it. I wonder how much pressure you use for fiberglass pipes. The proposal is to replace the pipeline.

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