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Q235B Q345B Welded Hollow Steel Pipe , Large Diameter And Wall Thickness Round Water Pipe

Basic Information
Place of Origin: CHINA
Brand Name: Sunrise
Model Number: Pipe
Minimum Order Quantity: 27MT
Packaging Details: Standard Seaworthy Packing
Delivery Time: 25days
Supply Ability: 25000MT per Month
Detail Information
Grade Group: Q235, Q345 Section Shape: Round
Thickness: 5 - 16 Mm Outer Diameter: 219 - 2030 Mm
Surface Treatment: Oiled Alloy Or Not: Non-alloy
Length: 12m
High Light:

Q235B Steel Hollow Pipe


12m Welded Steel Pipe


Q345B Steel Hollow Pipe

Product Description

Q235B/Q345B Large Diameter and Wall Thickness Water Pipe / Welded Steel Pipe




During the 20th Century, advancements were made in steel pipe, in the economy of production and the quality of the product. Noteworthy are the machines and technology for cold-forming of flexible pipe from coils of sheet steel with automated spiral welds. Great strides were made in quality control, testing, joints and protective coatings.


Welded steel pipe is available in wide ranges of sizes and properties of the steel. Included in this manual are the design criteria for steel pipe up to 240 inch (6,000 mm) in diameter under either internal or external pressure. The requirements of buried flexible pipe are: strength, ease of installation, high flow capacity, leak resistance, long service life, reliability and versatility, and economy. The properties of steel are well adapted to these seven requirements of buried pipelines.





Outer Diameter(mm) Wall Thickness(mm) Length(m)
219 6~8 12
273 6~10 12
325 6~14 12
377 6~14 12
426 6~16 12
478 6~16 12
508 6~18 12
529 6~18 12
610 6~19 12
630 6~19 12
720 6~22 12
820 7~22 12
920 8~23 12
1016 8~23 12
1020 8~23 12
1220 8~23 12
1420 10~23 12
1620 10~23 12
1820 10~25.4 12
2020 10~25.4 12
2200 10~25.4 12
2420 10~25.4 12
2620 10~25.4 12




Production Flew


Oiled marking:

Steel after passing wrer oiled to prevent corrosion,and according to user requirements for making.


Leveling Milling:

The flat steel anvil machine so that the origal curl,and then thouth the edge milling machine for two-sided steel milling,so as to meet the requirements of the plate width,plate edge parallelism and groove shape.


Shear molding:

The steel plate production line along the outer edge of the spiral curl into a tube.


Butt cut:

Double-sided submerged arc welding using advanced technology to pre-welding,internal welding,outside wilding.The welded steel pipe using a plasma-foot cut to specification length.


Q235B Q345B Welded Hollow Steel Pipe , Large Diameter And Wall Thickness Round Water Pipe 0



Heating Pipelines, Water Pipelines, Gas Supply Systems, Oil Pipelines, Irrigation Pipelines, Pipe Piling, etc.

Q235B Q345B Welded Hollow Steel Pipe , Large Diameter And Wall Thickness Round Water Pipe 1



Contact Details

Phone Number : 86 13925553088