ERW Steel Pipe JIS, DIN, ASTM, API Q195-Q345

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Product Description:

1Structure of ERW Steel Pipe JIS, DIN, ASTM, API Q195-Q345: 

Seamless pipe is formed by drawing a solid billet over a piercing rod to create the hollow shell. As the manufacturing process does not include any welding, seamless pipes are perceived to be stronger and more reliable. Historically seamless pipe was regarded as withstanding pressure better than other types, and was often more easily available than welded pipe. 


2‍‍Main Features of ERW Steel Pipe JIS, DIN, ASTM, API Q195-Q345:

• High manufacturing accuracy

• High strength

• Small inertia resistance

• Strong heat dissipation ability

• Good visual effect

• Reasonable price  


3ERW Steel Pipe JIS, DIN, ASTM, API Q195-Q345 Specification



ASTM A106-2006, ASTM A53-2007


10#-45#, 16Mn

10#, 20#, 45#, 16Mn


8 - 33 mm

Section Shape


Outer Diameter

133 - 219 mm

Place of Origin

Shandong, China (Mainland)

Secondary Or Not



Hydraulic Pipe


Cold Drawn



Surface Treatment

factory state or painted black

Special Pipe

API Pipe

Alloy Or Not




Outer Diameter



20#, 45#, Q345, API J55, API K55, API L80, API N80, API P110, A53B




1) Material:20#(ASTM A 106/A53 GRB.API5LGRB,GB),45#,16Mn,10#.

2) Specification range:OD:21.3-610mm,WT:6-70mm,length:6-12m or according to the requirement of clients.

3) Excutive standards:GB,ASME API5L.ASTM A 106/A53,Despite of the above standards,we can also supply seamless steel pipe with standard of DIN,JIS,and so on,and also develop new products according to the requirements of our clients!
4) Surface:black lacquered,varnish coating or galvanized.
5) Ends:Beveled or square cut,plastic capped,painted.
6) Packing:bundles wrapped with strong steel strip,seaworthy packing. 



4Packaging & Delivery

Packaging Details:

seaworthy package,bundles wrapped with strong steel strip

Delivery Detail:

15-30days after received 30%TT


5FAQ of ERW Steel Pipe JIS, DIN, ASTM, API Q195-Q345:  

How 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.

How 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.

Why 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.


6‍‍ERW Steel Pipe JIS, DIN, ASTM, API Q195-Q345 Images ‍‍



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Q:Welded and seamless steel pipe how to distinguish?
Generally, careful observation, can see traces of the weld seam pipe, further is the determination of the polished incision, and then with the file can be seen there is no clear cut, interface traces with the file cleanup to remove when cutting was pasted interface.
Q:What is an electric welded pipe (EFW)? Seek help!
It is through one or several consumable between the electrode and the workpiece on the metal heating the metal between a process with the arc to metal and filler material fully melted, no pressure, filler metal parts work from all electrodes
Q:The difference between 12Cr1MoVG alloy steel tube and 15CrMo
With this kind of steel manufacturing products, usually by heat treatment (normalizing and tempering); parts made before use, usually need to go through refining or chemical surface treatment (carburizing and nitriding), surface quenching or high-frequency quenching treatment. Therefore, according to the chemical composition (mainly carbon content), heat treatment process and use of different, such steel can be roughly divided into carburizing, quenching and tempering and nitriding steel three.
Q:There are multiple welded galvanized steel pipe outer diameter 108mm wall thickness 4mm length of 6 meters
Galvanized steel pipe is divided into cold galvanized steel pipe, hot galvanized steel pipe, cold galvanized steel pipe has been banned, and the latter is also advocated by the state for the moment, can be used. In 60s and 70s, developed countries began to develop new types of pipes, and galvanized pipes were banned. China's Ministry of construction and other four ministries also issued a civilization, indeed from two, 000 years since the galvanized pipe as a water supply pipe, the New District cold water pipe has rarely used galvanized pipe, and some of the hot water pipe is galvanized pipe. Hot dip galvanized steel pipe is widely used in fire, power and highway.
Q:Why can't stainless steel be put together with carbon steel tube?
Stainless steel can not be put together with carbon steel because of galvanic corrosion
Q:What quota should be installed for heating seamless steel pipe?
Seamless steel pipe having a hollow cross section, used as a conduit for conveying fluids, such as pipelines for transporting petroleum, natural gas, gas, water, and certain solid materials.
Q:304 stainless steel tube with the diameter of 25*2-3 is what mean
304 stainless steel tube with the diameter of 25*2-3 said: material for 304 (the equivalent of the American brand, Chinese numbered S30408 stainless steel or 06Cr19Ni10 stainless steel), diameter (OD) for 25mm, for the seamless steel pipe wall thickness of 2 to 3mm.
Q:Seamless steel tube 89X4 meters, how heavy?
Generally seamless steel pipe wall thickness will be uneven, according to the theory, each meter is 8.3844 kilograms, but if the wall thickness is poor 20--30 wire, then the weight will increase some
Q:What is the process of spiral steel tube production?
X ray flaw detection: 100% X ray industrial television inspection of internal and external weld seams, and image processing system is adopted to ensure the sensitivity of flaw detection.8. press test: the steel pipe is tested by root test on the water pressure test machine to ensure the test pressure of the steel pipe to meet the standard requirement.9. chamfering flat head: the qualified steel pipe is processed at the end of the pipe to achieve the required size of the end of the pipe10. final inspection: ultrasonic and X ray inspection, and magnetic particle inspection at the end of pipe to check for welding problems and pipe end defects.11., marking: qualified steel pipe for oil, in order to prevent corrosion, and according to user requirements for marking.
Q:How can the immersed pipe pile put steel cage into the steel pipe? Which expert to answer?
Pile: refers to the use of hammer piling method and pile vibration method, steel casing with valve type pile tip or precast reinforced concrete pile boots into the soil, then pouring concrete (or first in the tube into the cage), while hammering or vibration of a pile side pull tube. The former is called hammer sinking pipe cast-in-place pile, and the latter is called vibrating sinking pipe cast-in-place pile.

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