Hollow Section-Rectangle Tubes

Ref Price:

Loading Port:: Tianjin

Payment Terms:: TT or L/C

Min Order Qty:: 50MT m.t.

Supply Capability:: based on order m.t./month

Inquire Now

Add to My Favorites

OKorder Service Pledge

Quality Product, Order Online Tracking, Timely Delivery

OKorder Financial Service

Credit Rating, Credit Services, Credit Purchasing

You Might Also Like

Seamless Ferritic and Austenitic Alloy-Steel Boiler, Superheater, and Heat Exchanger

Seamless Steel Tubes And Pipes For Automotive Axle Housing

API 5DP oilfield use drill pipe

Hollow Section Steel Tubes（Hot Rolled/Cold Rolled）

Seamless Steel pipe hot Rolled/Cold Rolled

Pre-galvanized Pipe America Standard Q235 A500 150g Hot Dipped or Galvanized Pipe

Hot Dipped or Pre-galvanized Galvanized Pipe A53 Q195 100g Hot Dipped

Hot Dipped or Pre-galvanized Galvanized Pipe Hot Dipped or Pre-galvanized Pipe

Application

It is widely used in building, machine, chemical equipment, automobile industrial, container, it is also applied to agriculture and mine machine.

Standard：

ASTM A500, GB6728

Steel grade:

ASTM A500: A, B, C

GB6728：Q195，Q215，Q235，Q345

Size of Pipe:

*Remark: Besides below sizes, we also can arrange production based on requirement of customers

Sizee(mm)	Thickness(mm)
20×10	0.6-1.0
25×12	0.6-1.0
38×19	0.6-1.5
50×25	0.6-1.5
50×30	1.6-3.0
60×40	1.5-3.5
75×50	1.5-4.0
80×40	1.5-4.0
100×50	2.0-6.0
100×60	2.0-6.0
100×75	2.0-6.0
120×60	3.0-6.0
120×80	3.0-6.0
125×50	3.0-6.0
125×75	3.0-6.0
150×50	3.0-6.0
150×75	3.0-6.0
150×100	4.0-12
160×80	4.0-6.0
175×100	4.0-12
200×100	4.0-12
200×150	4.0-12
250×150	5.0-12
300×200	5.0-12
400×200	5.0-12

Standard: ASTM A500

Chemical Composition(%)

Chemical Requirement
	Composition %
	Grade A		Grade B
	Heat	Product	Heat	Product
Element	analysis	analysis	analysis	analysis
Carbon max	0.26	0.3	0.22	0.26
Manganese max	…	…	1.4	1.45
Phosphorus, max	0.035	0.045	0.03	0.04
Sulfur max	0.035	0.045	0.02	0.03
Where an ellipsis (...)appears in this table, there is no requirement
For each reduction of 0.01 percentage point below the specified maximum for carton, and increase of 0.06 percentage point above the specified maximum for manganese is permitted, up to a maximum of 1.50% by heat analysis and 1.6% by product analysis

Mechanical Properties

Tensile Requirement
	Grade A	Grade B
Tensile strength, min, psi (Mpa)	48000 (400)	70000 (483)
Yield strength, min, psi (Mpa)	36000 (250)	50000 (345)
Elongation in 2 in. (50.8mm), min, %	23	23

GB6728：

Steel Grade

CHEMICAL COMPOSITION

MECHANICAL PROPERTIES

C (%)

Si (%)

(%)

P(%)

Max

S (%)

Max

YS(Mpa)

Min

TS(Mpa)

Min

El (%)

Min

Q195

0.06-0.012

0.3

0.25-0.5

0.45

0.5

195

315

Q215

0.09-0.15

0.3

0.25-0.55

0.45

0.5

215

335

Q235

0.12-0.22

0.3

0.3-0.7

0.45

235

375

Q345

0.20

0.55

1.0-1.6

0.45

345

510

producing of Hollow Section-Rectangle Tubes

Chinese Hollow Section-Rectangle Tubes/Hiquality Hollow Section-Rectangle Tubes

delivery of Hollow Section-Rectangle Tubes

manufacturer of Section-Rectangle Tubes

Q:How are steel pipes protected against rust and corrosion?: Steel pipes are protected against rust and corrosion through various methods such as applying protective coatings, galvanizing, and cathodic protection. These measures create a barrier between the steel surface and moisture or corrosive substances, ensuring the longevity and integrity of the pipes.

Q:Are steel pipes suitable for underground mining operations?: Yes, steel pipes are suitable for underground mining operations. Steel pipes are known for their durability, strength, and resistance to corrosion, making them ideal for use in harsh underground mining environments. They can withstand high pressure and are capable of transporting various substances, such as water, air, or mining materials, with reliability and efficiency. Additionally, steel pipes can be customized to meet specific mining requirements, ensuring their suitability for underground operations.

Q:How are steel pipes used in the construction of underground utilities?: Steel pipes are commonly used in the construction of underground utilities as they are highly durable and can withstand the pressure and weight of the surrounding soil. They are primarily used for various applications such as transporting water, natural gas, and sewage, as well as for electrical conduit systems. Additionally, steel pipes are resistant to corrosion, which makes them ideal for long-term underground installations.

Q:Seamed steel pipe seamless steel pipe, carbon steel pipe, galvanized pipe, four how to distinguish between: Major use differentiation:1, seamed tube can withstand the maximum operating pressure is generally less than 20 kg, which is the most secure use. It is generally used in water, gas, compressed air and other low-pressure fluid;2 seamless tube can withstand ultra-high pressure, of course, its wall thickness will also increase, which needs to be designed according to pressure requirements. It is generally used in high-pressure oil pipes, boiler tubes and other high temperature and high pressure equipment. There are also seamless tubes for structural purposes, depending on the design requirements.3, there are some seamed steel pipe seamless treatment tube, it is the weld annealing treatment, eliminate the residual stress of the weld, the weld and base material, the pressure range of basic and seamless pipe is. May also consider the use of.4, of course, the market also has some use overall heating after drawing steel pipe joints or mandrel rolling seamless steel pipe, mainly in small size, only in the shape of this kind of pipe belongs to the seamless tube, it is not very good

Q:Can steel pipes be used for transporting gases and liquids?: Yes, steel pipes can be used for transporting both gases and liquids. Steel pipes are highly durable, corrosion-resistant, and have excellent strength, making them suitable for various applications, including oil and gas pipelines, water supply systems, and industrial processes.

Q:Are steel pipes suitable for transporting chemicals?: Yes, steel pipes are suitable for transporting chemicals. They are known for their durability, corrosion resistance, and high strength, which makes them ideal for carrying various chemicals safely and efficiently. Additionally, steel pipes can withstand high pressure and extreme temperatures, making them a reliable choice for transporting chemicals in industries such as oil and gas, petrochemicals, and manufacturing.

Q:What are the common applications of steel pipes in construction?: Steel pipes are commonly used in construction for various applications such as structural support, plumbing, water distribution, gas transportation, and HVAC systems. They provide strength, durability, and resistance to corrosion, making them an ideal choice for these purposes.

Q:How are steel pipes measured and specified?: Steel pipes are measured and specified based on their diameter (nominal pipe size or NPS) and wall thickness (schedule or SCH). The NPS represents the internal diameter of the pipe, while the SCH indicates the thickness of the pipe walls. These measurements are crucial for ensuring proper compatibility and functionality in various applications, such as plumbing, construction, and industrial processes.

Q:Can steel pipes be used for drainage systems?: Yes, steel pipes can be used for drainage systems. Steel pipes are durable, strong, and resistant to corrosion, making them suitable for various applications, including drainage systems. They can effectively transport water and waste materials, ensuring efficient drainage.

Q:What are the different methods of protecting steel pipes from corrosion?: There are several methods of protecting steel pipes from corrosion, including coating the pipes with materials such as epoxy, polyethylene, or zinc; applying cathodic protection by using sacrificial anodes or impressed current; and employing corrosion inhibitors to prevent the formation of rust. Regular maintenance and inspections are also crucial in identifying and addressing any potential corrosion issues.

We mainly produces Square and Rectangular Tubes which using the cold rolling technology and other types of tube including Round Steel Pipes, Welded Steel Pipes, Seamless Steel Pipes, Long Products, Flat Steel Products and so on. Our productivity achieves 500, 000 tons each year. Our company is stronger in financial capital and enough power of technical support. The steel tubes made by the company are strictly according to ISO9001:2000 standard quality management system to ensure the high quality of the products.

1. Manufacturer Overview
Location	Tianjin,China
Year Established	2000
Annual Output Value	Above Thirty Million RMB
Main Markets	China; Europe
Company Certifications	ISO9001:2000

2. Manufacturer Certificates
a) Certification Name
Range
Reference
Validity Period

3. Manufacturer Capability
a)Trade Capacity
Nearest Port	Tianjin；Qingdao
Export Percentage	41% - 50%
No.of Employees in Trade Department
Language Spoken:	English；Chinese
b)Factory Information
Factory Size:	53000square meter
No. of Production Lines
Contract Manufacturing	OEM Service Offered；Design Service Offered
Product Price Range	Low Average