Product Description
Welded Carbon Steel Round Pipe/Seamless Carbon Steel Round Pipe/Welded Carbon Steel Square Pip
1. Material and process advantages
High-strength material: Q195/Q235/Q345 or ASTM A53/A106 carbon steel, strong pressure and impact resistance.
Advanced technology: high-frequency welding (ERW)/submerged arc welding (LSAW)/seamless cold-drawn to ensure precise size and uniform weld seam.
Anti-corrosion treatment: hot-dip galvanizing, epoxy coating or spray painting are optional to extend outdoor service life.
2. Cost and delivery advantages
Favourable price: large-scale production, 30%-50% lower cost than seamless pipe.
Fast delivery: regular specifications in stock, customised sizes delivered in 7-15 days.
3. Certification and Quality Assurance
International Certification: Passed ISO 9001, CE, API 5L, GB/T 3091 and other standards.
1.
Welded Carbon Steel Round Pipe
| Parameter |
Specification Range |
Common Sizes |
Standard |
| OD |
10mm-2000mm |
21.3mm, 48mm, 114mm |
GB/T 3091, ASTM A53 |
| Wall Thickness |
0.8mm-20mm |
2.0mm, 3.6mm, 6.0mm |
EN 10219, JIS G3444 |
| Length |
1m-12m(Customisation up to 18m) |
6m, 12m |
|
| Material |
Q195, Q235B, Q345B |
ASTM A36, SS400 |
|
| Process |
ERW/LSAW |
|
|
2.
Seamless Carbon Steel Round Pipe
| Parameter |
Specification Range |
Common Sizes |
Standard |
| OD |
6mm-800mm |
25mm, 60mm, 168mm |
GB/T 8163, ASTM A106 |
| Wall Thickness |
1mm-50mm |
3mm, 8mm, 12mm |
DIN 2448, API 5L |
| Length |
3m-12m(Customisation up to 15m) |
5.8m, 11.8m |
|
| Material |
20#, 45#, 16Mn |
ASTM A53 Gr.B, ST52 |
|
3.
Welded Carbon Steel Square Pipe
| Parameter |
Range |
Stock Sizes |
Standard |
Feature |
| Side Length |
10×10mm - 500×500mm |
20×20mm, 50×50mm |
GB/T 6728, ASTM A500 |
ERW,internal and external deburring |
| Wall Thickness |
0.8mm-20mm |
1.5mm, 3.0mm |
JIS G3463, EN 10219 |
Flat weld seam, high strength |
| Length |
1m-12m(Customisation ) |
6m, 12m |
---- |
Flat cut, ±1mm tolerance |
| Material |
Q195/Q235B/Q345B/Q355 |
ASTM A36, SS400 |
---- |
galvanized/painted |
Applications
| Industry |
Applications |
| Construction |
Building frameworks, scaffolding, guardrails, roofing supports. |
| Oil & Gas |
Low-pressure pipelines, casing pipes, water injection lines (API 5L compliant). |
| Water Supply |
Municipal water drainage, fire sprinkler systems, irrigation pipes. |
| Mechanical |
Conveyor rollers, hydraulic cylinders, truck chassis components. |
| Agriculture |
Greenhouse frames, livestock fencing, grain storage bins. |
Customisation service
Flexible size: support customized outer diameter (OD 10mm-2000mm), wall thickness (1mm-50mm), length (1m-12m)
Main Products
Company Profile
Emerging in the 1980s,Lecong Steel World draws on over forty years o successful steel trading experience and officially established in 2009.Over the past decade,we are committed to develop a comprehensive supply chain system encompassing 'metal trading-warehousing-logistics-processing and distribution,'offering one-stop solutions for global manufacturing,infrastructure,machinery,construction,fire engineering,municipal projects,steel structure initiatives,and more than 20 steel-using industries.As of today,the park has evolved into the largest wholesale market for metal materials worldwide.Our Global is to empower our clients to gain competitive advantages through cost reduction and improved efficiency,thereby establishing our premium brand image in the global metal industry.
Workshop & Equipment
Exhibitions & Our Customers
Certifications
Packaging & Shipping
FAQ
- How long has your company been established? Do you have import and export rights?
We Steel World established in 2009,and owns the rights to export.
- Is there a factory or production line? Can you provide photos/videos of the factory? Is it possible to visit the factory?
We have our own machining centre and large diameter pipe factory, we can provide you with the factory photos and production line videos you want, and you are always welcome to visit our factory.
- Availability of international product certification and industry certification (e.g. ISO, CE, RoHS, etc.)
We can meet customers' international product certification, such as: GB, EN, JIS, Australian Standard and so on.
The factories under our company have met the ISO certification, ROHS and other certifications.
4. What is the minimum order quantity (MOQ)? Is it in stock? How long is the lead time?
MOQ and lead time will depend on specific products. We mainly deal in stock and can deliver in 2-3 days. However, for special requirements, customisation is required and lead time is needed.
5.What payment methods are accepted?
We can accept TT, LC, PayPal,West Union and other payment methods.
Audited Supplier 
){kind=link}