Q235 Q355 Square / rectangular / round Black welded steel pipe steel tube steel hollow section from China

Free mold customized size square/round tube

Welded square pipe, as an important pipe, plays an irreplaceable role in modern industry and construction. Its high strength, corrosion resistance and plasticity make it the preferred material for many infrastructure and engineering projects, and it is widely used in oil pipelines, natural gas pipelines, building support structures, Bridges, guardrails and other aspects. The application prospect of welded square pipe is very broad, especially in the new energy, urbanization and transportation infrastructure construction, and its demand is growing.

Specification:

Φ90*7 Overweight high precision round convert to square welded pipe production line

Φ180*14 Overweight high precision round convert to square welded pipe production line

REMARK:

Welded pipe length: 4.0~12.0m, the actual thickness can be over 0.5-1 mm according to the specifications, inquiry for more details.

Welded pipe Quality requirements: welding quality, outer diameter tolerance size, surface quality meet the corresponding standard requirements, smooth appearance.

Welded pipe Outer diameter accuracy requirement:<0.10mm. roundness tolerance:<0.08mm(except weld zone)

Welded pipe Straightness:<1mm/m(Note: GB/T13793) cold-cut welded pipe cutting length deviation accuracy: <2mm

Our Advantages:

--Research and development technology

1. Relying on the material experts in the industry and famous steel mill cooperation advantages,Individual services are provided according to customer needs in terms of composition, performance design and material selection. Such as high strength,wear resistance,fatigue resistance,corrosion resistance, low temperature resistance.

2. With the industry's first-class technical personnel and advanced cold bending technology.

3. Combination of cold bending and cold drawing, It can meet the requirements of many industries for product performance differentiation, quality diversification, small batch and urgent delivery.

--Deliver ability

Our company has advanced production equipment, annual production of 100,000 tons,delivery time is guaranteed.

--Service team

Professional sales team and after-sales personnel

Quality First Client Supreme

Quality Assurance:

1. Brand steel mill raw material

2. Advanced welding equipment and technology to ensure the quality

3. On line deburring, flaw detection and Welding line heat treatment to ensure the performance.

4. Combine with cold drawing technology, optimize welding line quality, improve overall performance.

5. Mold is designed by Germany software COPRA to ensure the stability.

Application case:

1. Urban subway project: It is often used as a support structure for subway tunnels. It can ensure the safety and stability of the tunnel structure.

2. Highway guardrail project: High strength and weather resistance make it able to withstand vehicle impacts and adverse weather conditions.

3. oil pipeline: High strength, reliability and low cost make it the material of choice.

Company profile:

Yige special Steel science technology Co., Ltd has been specialized in manufacturing special-shaped steel pipes,seamless pipes, cold bending welded steel pipe and other cold drawn materials. We have more than 8 years of production and export experience. All of our products comply with international quality standards and are greatly appreciated in a variety of markets around the world.

Certificate display:

Packing and delivery:
The inner layer has a waterproof paper outer layer with iron packaging and is fixed with a fumigation wooden pallet. It can effectively protect products from corrosion during ocean transportation.

Cooperative partner:

SANY,SUNWARD,DOOSAN,ZOOMLION,CRRC,LEMKEN,ETC.

FAQ:

Q1: What are the advantages of your company ?
A1: We have many professionals, technical personnel, more competitive prices and best after-dales service than other companies.

Q2:what is your company location?

A2:Our office is located in Changsha City Hunan province.

Q3: Do you give any discount ?

A3: We'll surely try our best to help you get those by the best price and good service at the same time.

Q4: How do you control quality ?

A4: Mill Test Certification is supplied with shipment, Third Party Inspection is available.

Q5:What can you buy from us? 

A5:Seamless steel pipe, welded steel pipe, stainless steel series, high-performance and high-precision of special-shaped steel pipes,seamless pipes and other cold drawn materials.