Unisite Group Ltd.

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Large steel pipe for sale

Basic Info

Model No.: USA-062

Dimension: As Per Drawing/order

Inspection: Material, Construction, Dimension, Welding Seam, N

Grade: 10#-45#, Q195-Q345, X42-X80, L245-L255 Or Other Ma

Standard: API 5L, BS 1387, GB/T 3091-2001, GB/T9711, ASTM A5

Certificate: API BV

Application: Marine Steel Structure And Dredging Field And Oil

Tolerance: High Accuracy(ISO2768, ISO5817, ISO13920); Detail:

Surface: Sa2.5 Blasted And Two Or Three Layers Painted With

Thickness: 5-60

Steel Straight Seam Pipe Saw: Longitudinally Steel Seam Pipes Saw

Additional Info

Packaging: bulk package and bulk vessel transportation; frame container package and frame container transportation

Brand: UniSite

Transportation: Ocean,Land

Place of Origin: china mainland(zhejiang)

Certificate: API/BV/ISO

Product Description

According to the pipe cross-sectional shape can be divided into: Steel Pipe and profiled steel pipe. Shaped steel pipe is a kind of non circular section of the steel pipe. Including: square tube, rectangular tube, oval tube, flat oval tube, half pipe, hexagonal tube, hexagonal circular tube, equilateral hexagonal tube, tube of equilateral triangle, Pentagon plum tube, octagonal tube. A convex shaped tube, double convex tube. Biconcave shaped pipe, tube, oval - shaped tube, flat tube, tube diamond shaped, star shaped tube and parallelogram pipes, ribbed tube, drop shaped tube, internally finned tube, twisting reducing pipe, B type tube, D type tube and multilayer tube concave shape.

large steel pipes

1. Fake steel pipe prone to collapse.
Folding is a kind of broken line formed on the surface of steel pipe, which often runs through the whole product. Folding is due to shoddy manufacturers to pursue high efficiency, pressure amount slants big, produce Erzi, a rolling produced folding, folding products after bending will crack and the strength of steel big decline.
2. The pipe surface often pitted phenomenon.
Ma is due to a defect of groove wear caused by irregular rugged steel surface. As a result of fake and shoddy steel pipe manufacturers to pursue profit, the most frequent rolling mill.
3. Fake steel pipe surface easy generation scarring.
There are two reasons:
(1) Fake and shoddy steel pipe material is not uniform, more impurities.
(2) Shoddy material manufacturers guide simple equipment, easy to stick steel, these impurities bite roll easily after produce scar.
4. Fake wood surface easy to crack, the reason is that it is entirely adobe, adobe air, cooling in the adobe
In the process, due to the role of thermal stress, crack, after rolling there is a crack.
5. Fake and inferior steel tube is easy to scratch, the reason is that the equipment is simple, easy to produce burr, scratch the surface of steel. Deep scratch to reduce the strength of steel.
6. Fake steel pipe without metallic luster, reddish or similar iron color, there are two point two reasons, it is entirely adobe. 2, shoddy material rolling temperature is not standard, their steel temperature is through the visual, so can not according to the provisions of the austenite region rolling, the performance of steel natural cannot reach.
7. Fake and shoddy steel tubes thin and low, often appear to be full of dissatisfaction with the phenomenon, the reason is that manufacturers to achieve large negative tolerance, a few road before the finished product under the weight of large, iron type is small, the hole filling dissatisfaction.


With advanced produce line, equipment and skilled workers, we can provide spiral, saw, Lsaw Steel Pipe and other pipes and structures.

Our main scope of pipe business are submerged pipe, Floating Pipe, and shore pipe for dredging, marine work, oil field etc.


The construction is to be built according to the drawing with rules of good workmanship.


All fabricated steelwork used in the construction of the pipe line will be to manufacturing standard of UniSite or other classification society.
All materials proposed will be selected to comply with the latest Health and Safety Rules.

Paint systems for hull protection will be of the highest quality (Hempel, Inter, Sigma, Jotun)


All welding will be performed in accordance with drawing and standard and UniSite experience and all welding will be continuous and full penetration.

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Product Categories : Steel Pipe > Steel Pipe

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  • Large steel pipe for sale
  • Large steel pipe for sale
  • Large steel pipe for sale
  • Large steel pipe for sale
  • Large steel pipe for sale
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