Best-Selling China Manufacture ASTM AISI A36 Carbon Square Steel Pipe

Seamless steel pipe is a type of pipe without any welding seam. It is made of high-quality carbon steel, alloy steel or stainless steel and has the advantages of high precision, smooth surface, and excellent mechanical properties.

 

Due to its outstanding features, seamless steel pipe is widely used in industries such as oil and gas, chemical, automotive, and construction. Its applications include transporting oil, gas, and other fluids, manufacturing machinery parts, and constructing buildings.

 

In addition, the seamless design offers better performance and longer service life compared to welded pipes. Overall, seamless steel pipe is a reliable and versatile option for various industrial purposes.

Product performance parameter table 

01. Incoming inspection(chemical separation,dimensional tolerance, surface grinding)

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02. Head making(pressing,driving,cutting)

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03. Rust removal and lubrication

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04. Drawing(empty drawing or core lining)

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05. Heat treatment(annealing, normalizing and tempering)

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06. Mechanical test(sampling test of each batch)

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07. Finishing(straightening and shaping)

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08. Dimensional inspection(surface appearance,dimensional tolerance)

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09. Head and tail cutting,weighing,packaging,warehousing and delivery

1. High strength: seamless square tube is made of high-strength low-alloy structural steel with high yield strength and tensile strength.

2. Corrosion resistance: seamless square tube after proper anti-corrosion treatment, can resist corrosion and oxidation erosion.

3. Good weldability: seamless square tube has good weldability and can be connected and assembled by conventional welding methods.

4. Machinability: seamless square tube has good plasticity and machinability, can be cold bending, hot bending and cutting processing operations.

5. Fatigue resistance: seamless square tube has excellent fatigue resistance, which can maintain the reliability and stability of the structure under repeated load for a long time.

6. Good wear resistance: seamless square tube after proper treatment and alloy design, has high wear resistance, can resist friction, wear and erosion of abrasive particles.

1. Aerial work machinery

2. Transport Vehicle

3. Petrochemical machinery

4. Agricultural machinery

5. Steel structure building

6. Ship and marine engineering

Hunan Yige Special Steel Science Technology Co., Ltd. was founded in 2015. With self-built standard factory area of more than 20,000 square meters, office building of more than 5,000 square meters, covering an area of more than 65 acres.

It's a high-tech enterprise specialized in the production,R&D and sales of the high-performance, high-precision, special-shaped seamless steel pipes and cold-bending welded pipes. The 460-960E series of high-strength seamless square pipe produced by the company has been rated as a new industrial product of Hunan Province, we hold with a number of practical patents, and has passed ISO9001, 14001, 45001, BV, CE and other system certifications.

The company has 500T/300T/200T hydraulic drawbench machines, 60T/30T chain drawbench machines, multifunctional heat treatment furnace, several sets of head making,straightening, sawing, surface treatment and machining equipment, and equipped with a full set of physical and chemical testing equipment. The annual output more than 50,000 tons.

Our products are characterized by "high, precision, special and different" (high strength, high precision, special materials and special-shaped section). It can meet the needs of customers in various industries for materials with high strength, high toughness, easy welding, impact resistance, fatigue resistance, wear resistance, corrosion resistance.

Now, our factory products have been widely served high-end equipment manufacturing industries at home and abroad, such as aviation, military industry, engineering machinery, ship and marine engineering, traffic vehicles, construction machinery, steel structure building, petrochemical industry, agricultural machinery, textile machinery,communication tower and other industries.

we hold with a number of practical patents, and has passed ISO9001, 14001, 45001, BV, CE and other system certifications.

Wrapped the bundle with water-proof cloth and then bundled by steel strips, and with the nylon lifting belts at both ends or Packaging as per customer's requirement. 

We have cooperated with 300+ clients,such as SUNWARD,SANY,ZOOMLION,CRCC,SINOBOOM,CRRC..

Q1: Are you a manufactuer or trading company?
A1: We are manufactuer.

Q2: Can you do the design for us?
A2: Yes,of course.

Q3: Is the sample free,and How long can I expect to get the sample?
A3: It's free,if we have stock,we will send to you as soon as possible.

Q4: What is your terms of delivery?
A4: EXW,FOB,CIF,C&F.

Q5: What's your payment term?
A5: 30% deposit,Pay the 70% before delivery.

Q6: Where is your company?
A6: Our company is in Hunan,China.

Q7: How long is the delivery period of the product?
A7: After confirm the order and payment.

Q8: Where is your loading port?
A8: SHANGHAI,TIANJIN,QINGDAO,SHENZHEN.