What is ERW Pipe? The Complete Guide from a Factory Perspective
By understanding the manufacturing process, standards, and applications of ERW steel pipes, you can save your project from high costs without compromising on quality.
Standards We Supply:
ASTM / ASME: A106, A53, A333, A179, A192, A210
API: API 5L PSL1 / PSL2
EN: EN 10210, EN 10216-1/2/3
DIN / JIS / GB: DIN 17175, JIS G3454/G3455, GB 8162 / 8163 / 3087
Material Grades:
Carbon Steel: Gr.B, Gr.C, 20#, 45#
Alloy Steel: 15CrMo, 12Cr1MoV, 4130, 4140, T11, T22
Size:
1/2″ – 26″, 21.3MM-660MM, DN 15- DN 650
Thickness: 1mm – 20mm
Length: 11.8m, 12m, 5.8m, 6m, others
Seamless steel pipe is a long strip of steel with hollow section and no joint around it，Rolling methods include hot rolling, hot extrusion and cold drawing (rolling) steel pipee, the material is include carbon steel bar and stainless steel bar.Compared with welded pipe, the performance and result strength of seamless steel pipe are much stronger than welded pipe.
JSFittings is a leading manufacturer of hot rolled and cold drawn seamless steel pipes, offering a wide range of carbon steel, alloy steel, and mechanical tubing for high-pressure, high-temperature, and structural applications.
Maximum diameter: 36″ (914.4mm) minimum diameter: 1/2″ (21.3mm)
Maximum thickness: 60mm mininmum thickness: 2.11mm
SCH: SCH10,SCH20,STD,SCH40,SCH60,XS,SCH80,SCH100,SCH120,SCH160
| Parameter | Tolerance | Instrument Used |
| Outer Diameter(OD) | ±1%of nominal OD (or±0.79mm) | Pi tape/Laser micrometer |
| Wall Thickness(WT) | ±12.5%(SCH40 and below) | Ultrasonic thickness gauge(UTG) |
| Length | ±3mm for random,±6mm for cut-length | Calibrated tape measure |
| Straightness | ≤0.2%of total length | Optical comparator |
| Bevel Angle (for welding) | 30°-35°(±5°) | Bevel protractor |
The production process of seamless steel pipe can be divided into cold drawing and hot rolling.
1. The production process of cold-rolled seamless steel pipe is generally more complex than hot rolling. The appearance of cold-rolled seamless steel pipe is shorter than that of hot-rolled seamless steel pipe. The wall thickness of cold-rolled seamless steel pipe is generally smaller than that of hot-rolled seamless steel pipe, but the surface looks brighter than that of thick-walled seamless steel pipe. The surface is not too rough, and the diameter does not have too many burrs.
2. The delivery status of hot-rolled seamless steel pipe is generally hot-rolled and delivered after heat treatment.
More details messages about the difference of cold drawing and hot rolling seamless steel pipe, please click here.
Our seamless steel pipes are widely used in:
1. Factory-direct price with fast delivery time
2. Exported to 40+ countries (USA, UAE, Saudi Arabia, Brazil, Korea, etc.)
3. 30,000-ton production capacity guarantee | Stable supply of large-scale project needs
4. Dual-standard certified steel pipes | API 5L + EN 10219 dual compliance assurance
5. Standards: ASTM A53 B, ASTM A106 Gr. B, ASTM A179, ASTM A192, ASTM A333 and API 5L Gr B to X70
6. Coatings: Depending on client requests, 3PE, FBE, and Zinc Coating will be applied.
Q1: Do you accept third-party inspection?
Yes, SGS, BV, TUV are all acceptable.
Q2: Can I order customized sizes?
Yes, special OD/WT and lengths are available.
Q3: What’s your MOQ?
1 ton for common sizes.
Request a Free Quote
JSFITTINGS offers a comprehensive carbon steel pipe portfolio adhering to major international standards.
This includes API 5L steel pipes for oil and gas transmission,
ASTM A106 Grade B steel pipes for high-temperature service,
ASTM A53 Grade B steel pipes for general piping systems,
ASTM A252 Grade 3 pipes for piling applications,
and ASTM A333 Grade 6 steel pipes for low-temperature environments.
Our product range encompasses seamless and welded (ERW, LSAW, SSAW) steel pipes, coated steel pipes, engineered to meet the rigorous demands of various industrial applications, from mining and construction to water, oil, and gas transmission.
Tell us your:
Size (OD, WT),Standard & Grade,,Quantity,,Application,,Destination port
We will send you a quotation within 2 hours.
When you choose to contact us, you will love our service
No matter you have rich experience of importing or new in this industry, our team will try the best to make your purchase of steel pipes fast and efficient.
All staff are7x 24 hours online and all your inquiries will be replied within 2 hours.
common size of steel pipes are in stock more than 800 tons, CIF orders will book stand-on vessel first.
Test report, certificates, CO and all customs clearance documents will be replied in time.
By understanding the manufacturing process, standards, and applications of ERW steel pipes, you can save your project from high costs without compromising on quality.
The difference between ASTM A333 steel pipe and ASTM A106 steel pipe is that ASTM A333 is a low-temperature carbon steel pipe that can be used as a structural pipe, while ASTM A106 is a non-structural carbon pipe that is used in high-temperature applications.
Carbon steel pipe/ tube, also called CS pipe, are widely used in heavy industries like infrastructure, shipping, stills, mineral, oil, gas, and fertilizer industry pipeline systems.
Hot rolled seamless pipe is processed at high temperatures, resulting in a rougher surface and looser tolerances but lower cost. Cold drawn seamless pipe undergoes further processing at room temperature, delivering tighter tolerances, higher strength, and a smooth finish, though at a higher price point.
We will contact you within 2 hours, please pay attention to the email with the suffix “@jsfittings.com” or “@chinajsgj.com”.
