• product

Straight Seam Welded Pipe

Straight Seam Welded Pipe
Straight seam welded pipe is a type of steel pipe made by rolling steel plates or strips into shape and then welding them longitudinally. It is widely used in modern industry, mainly due to its unique characteristics, which are reflected in its economy, production efficiency, and performance.

No. 121, Daqiao Road, Licheng District, Jinan City

Product Description
Spot warehousing
Product Inspection
Product Measurement
Customer Feedback

Parameter categories

Specific projectsDetailed description/numerical range
Specifications and dimensionsOuter diameter (OD)

Φ21mm - Φ1626mm

 ERW (High Frequency): Φ21 - Φ660mm

 LSAW (Submerged Arc): Φ323 - Φ1626mm and above

Wall thickness (WT)1.0mm - 36mm (depending on caliber)
lengthTypically 4m - 12m, custom length production supported.
Material gradeCarbon structural steelQ195, Q215, Q235A/B (most common)
Low alloy high strength steelQ345B (Q355B), Q420
Pipeline steelL245 (B), L360 (X52), X42 - X70
Implementation StandardsNational Standard (GB)GB/T 3091 (Low-pressure fluid transportation)

GB/T 9711 (Oil and gas industry)

American Standard (API/ASTM)API 5L (line pipe) ASTM A53 (seamless and welded steel pipe)
Mechanical propertiesQ235 materialYield strength: ≥ 235 MPa

Tensile strength: ≥ 370 MPa

Q355 materialYield strength: ≥ 345 MPa

Tensile strength: ≥ 490 MPa

Process parametersMolding speed20 - 200 meters per minute
Weld characteristicsSmall heat-affected zone, smooth weld, and high dimensional accuracy
Calculation formulaTheoretical weightW = 0.02466 × S × (D - S)

• D = Outer diameter (mm)

• S = Wall thickness (mm)

• Unit of result: kg/m


仓库现货(1)


01

Acid and alkali resistance test

02

Zinc layer experiment

03

Bending test

04

Yield strength test

05

Tensile strength test

06

Spectral detection

07

Hardness testing

08

Chemical composition detection

壁厚测量

Thickness measurement

厚度测量

Thickness measurement

厚度测量666

Thickness measurement

半径测量

Radius measurement

直径测量

Diameter measurement

直径测量2

Diameter measurement

长度测量

Length measurement

涂层测量

Coating measurement

TESTIMONIALS

The quality of this batch of steel pipes far exceeded expectations. The material is uniform and thick, the cut is smooth and burr-free, and the installation is seamless. The project efficiency was maximized, and the cooperation was very pleasant!

Julian

Julian

Sales Director

We've collaborated several times, and the hardness and toughness of the steel perfectly meet our project standards. The delivery speed is fast, and the packaging is secure with no damage. A reliable supplier is our first choice!

John Smith

John Smith

Sales Director

The surface treatment of the steel pipe is very good, the anti-rust coating is uniform and firm, and the dimensional accuracy is very high. It does not require secondary processing at all, which greatly saves our time and costs.

Freya

Freya

Purchasing Manager

The steel is very cost-effective, has stable mechanical properties, and passed the test on the first try. Customer service responded promptly, and communication was very smooth. We will continue to cooperate with them in the long term.

Elara

Elara

Purchasing Manager

The custom-made irregular-shaped steel pipes perfectly replicated our design drawings. The workmanship was exquisite and flawless, and the delivery time perfectly met the project schedule. We are extremely satisfied with this purchase!

Lila

Lila

Purchasing Manager

 Online Consultation

Submit
  • 5
  • 1-5
  • 主图6
  • 5
  • 主图5
  • 主图2
  • 6
  • 1-4