High Quality Hollow Section Q195 Q235 Gi Galvanized Square and Rectangular Steel Pipe/Tube 200*200*2.75~30 Highway Culvert Bridge Tunnel Underground Drainage

• Customization: Available
• After-sales Service: Support
• Warranty: One Year
• Model NO.: Square and rectangular steel pipe
• Type: Welded
• Technique: Hot Rolled
• Material: Carbon Steel
• Surface Treatment: Galvanized
• Usage: Pipeline Transport, Boiler Pipe, Hydraulic/Automobile Pipe, Oil/Gas Drilling, Machinery Industry, Chemical Industry, Mining, Construction & Decoration, Special Purpose
• Section Shape: Square and Rectangulatr
• Thickness: 0.5-60mm
• Length: 3-12m According to Client Requirement
• Od-Square: 10*10mm-1000*1000mm
• Od-Rectangular: 10*15mm-800*1100mm
• Od-Round: 10.3mm-609mm
• Technology: ERW, LSAW, SSAW, Seamless
• Delivery Time: 7-30 Days
• Materials: Gr.a/B/C, S235/275/355/420/460, A36, Ss400
• Standards: Hollow Section:ASTM A500/A501, En10219/10210
• Oiled or Non-Oiled: Non-Oiled
• Alloy or Not: Non-Alloy
• Processing Service: Welding, Punching, Cutting, Bending, Decoiling
• Certification: CE, LEED, BV, Phd&EPD, Bc1, En10210, En10219
• Specification: 200*200*2.75~30
• Trademark: Yuantai Derun
• Origin: Tianjin, China
• Production Capacity: 10million/Year

Product Description

 
Our Adavantage:
√ Quick reply within 24 hours.
√ Large Stock for regular sizes.
√ Free sample high quality.
√ 100% after-sales quality and quantity assurance.
 

Product Parameters

 

O.D mm	W.T mm	O.D mm	W.T mm	O.D mm	W.T mm	O.D mm	W.T mm
20*20	1.3	60*120 80*100 90*90	1.5	180*180	3.0	300*800 400*700 550*550 500*600
	1.4		1.7		3.5-3.75		9.5-9.75
	1.5		1.8		4.5-4.75		11.5-11.75
	1.7		2.0		5.5-7.75		12-13.75
	1.8		2.2		9.5-9.75		15-50
	2.0		2.5-4.0		11.5-11.75
20*30 25*25	1.3		4.25-4.75		12-25
	1.4		5.0-6.3	100*300 150*250 200*200	2.75	300*900 400*800 600*600 500*700
	1.5		7.5-8		3.0-4.0		9.5-9.75
	1.7	50*150 60*140 80*120 100*100	1.5		4.5-9.75		11.5-11.75
	1.8		1.7		11.5-11.75		12-13.75
	2.0		2.0		12.5-12.75		15-50
	2.2		2.2		13.5-13.75
	2.5-3.0		2.5-2.75		15.5-30
20*40 25*40 30*30 30*40	1.3		3.0-4.75	150*300 200*250	3.75	300*1000 400*900 500*800 600*700 650*650
	1.4		5.5-6.3		4.5-4.75
	1.5		7.5-7.75		5.5-6.3		9.5-9.75
	1.7		9.5-9.75		7.5-7.75		11.5-11.75
	1.8		11.5-16		9.5-9.75		12-13.75
	2.0	60*160 80*140 100*120	2.5		11.5-11.75		15-50
	2.2		2.75		13.5-30
	2.5-3.0		3.0-4.75	200*300 250*250	3.75	400*1000 500*900 600*800 700*700
	3.25-4.0		5.5-6.3		4.5-4.75
25*50 30*50 30*60 40*40 40*50 40*60 50*50	1.3		7.5-7.75		5.5-6.3		9.5-9.75
	1.4		9.5-16		7.5-7.75		11.5-11.75
	1.5	75*150	2.5		9.5-9.75		12-13.75
	1.7		2.75		11.5-11.75		15-50
	1.8		3.0-4.75		12-13.75
	2.0		4.5-4.75		15.5-30
	2.2		5.5-6.3	200*400 250*350 300*300	4.5-6.3	500*1000 600*900 700*800 750*750
	2.5-3.0		7.5-7.75		7.5-7.75		9.5-9.75
	3.25-4.0		9.5-16		9.5-9.75		11.5-11.75
	4.25-4.75	80*160 120*120	2.5		11.5-11.75		12-13.75
	5.0-5.75		2.75		12-13.75		15-50
	5.75-6.3		3.0-4.75		15.5-30
40*80 50*70 50*80 60*60	1.3		5.5-6.3	200*500 250*450 300*400 350*350	5.5-6.3	500*1100 600*1000 700*900 800*800
	1.5		7.5-7.75		7.5-7.75		11.5-11.75
	1.7		9.5-9.75		9.5-9.75		12-13.75
	1.8		11.5-20		11.5-11.75		15-50
	2.0	100*150	2.5		12-13.75
	2.2		2.75		15.5-30
	2.5-3.0		3.0-4.75	280*280	5.5-6.3	600*1100 700*1000 800*900 850*850
	3.25-4.0		5.5-6.3		7.5-7.75		9.5-9.75
	4.25-4.75		7.5-7.75		9.5-9.75		11.5-11.75
	5.0-6		9.5-9.75		11.5-11.75		12-13.75
40*100 60*80 70*70	1.3		11.5-20		12-13.75		15-50
	1.5	100*200 120*180 150*150	2.5		15.5-30
	1.7		2.75	350*400 300*450	7.5-7.75	700*1100 800*1000 900*900
	1.8		3.0-7.75		9.5-9.75		11.5-11.75
	2.0		9.5-9.75		11.5-11.75		12-13.75
	2.2		11.5-20		12-13.75		15-50
	2.5-3.0	100*250 150*200	3.0		15.5-30
	3.25-4.0		3.25-3.75	200*600 300*500 400*400	7.5-7.75	800*1100 900*1000 950*950
	4.25-4.75		4.25-7.75		9.5-9.75		11.5-11.75
	5.0-6.3		9.5-9.75		11.5-11.75		12-13.75
50*100 60*90 60*100 75*75 80*80	1.3		11.5-11.75		12-13.75		15-50
	1.5		12-25		15.5-40
	1.7	140*140	3.0-3.75	300*600 400*500 450*450	7.5-7.75	900*1100 1000*1000 800*1200
	1.8		4.5-6.3		9.5-9.75
	2.0		7.5-7.75		11.5-11.75		20-60
	2.2		9.5-9.75		12-13.75
	2.5-3.0		11.5-25		15.5-40
	3.25-4.0	160*160	3.0	400*600 500*500	9.5-9.75	1100*1000 1100*1100
	4.25-4.75		3.5-3.75		11.5-11.75		20-60
	5.0-5.75		4.25-7.75		12-13.75
	7.5-8		9.5-25		15.5-40

What are Galvanized Steel Pipes?

Galvanized steel pipes are steel pipes that have undergone a specialized coating process to prevent corrosion and increase their longevity. These pipes are typically made from carbon steel and are coated with a layer of zinc, forming a protective barrier between the steel and the surrounding environment. The zinc coating not only provides exceptional resistance against rust and corrosion but also enhances the overall strength of the pipe. They are also known as galvanizing pipes or pipes galvanized.

Manufacturing Process

The manufacturing process of galvanized steel pipes involves several steps to ensure a durable and reliable end product. Here is a brief overview of the process:

• Cleaning: The steel pipes are thoroughly cleaned to remove any impurities or residues, ensuring proper adhesion of the zinc coating.
• Pickling: The pipes are then immersed in an acidic solution to remove any mill scale or oxides present on the surface. This step further prepares the steel for the galvanizing process.
• Galvanizing: The cleaned and pickled pipes are submerged in a bath of molten zinc. Through a metallurgical reaction known as hot-dip galvanizing, the zinc forms a tightly bonded coating on the steel surface.
• Cooling and Inspection: After galvanization, the pipes are cooled and inspected for quality control. This step ensures that the zinc coating is uniform and free from any defects.

Benefits of Galvanized Steel Pipes

Galvanized steel pipes offer various benefits as listed below:

• Exceptional Durability: Galvanized steel pipes are known for their remarkable durability. The zinc coating acts as a sacrificial layer, protecting the underlying steel from corrosion and extending the lifespan of the pipes.
• Corrosion Resistance: The primary benefit of galvanized steel pipes is their superior resistance to corrosion. They can withstand harsh environmental conditions, including moisture, chemicals, and even underground exposure.
• Longevity: Due to their excellent corrosion resistance, galvanized steel pipes have a significantly longer lifespan compared to regular steel pipes. They can last up to 50 years or more, reducing the need for frequent replacements.
• Low Maintenance: Galvanized steel pipes require minimal maintenance over their lifespan. The zinc coating acts as a self-healing barrier, ensuring that minor scratches or abrasions do not compromise the integrity of the pipe.
• Versatility: Galvanized steel pipes are suitable for a wide range of applications, including water supply systems, plumbing, gas pipelines, outdoor structures, fencing, and more. They are compatible with various fittings and connectors, providing flexibility in installation.
• Cost-Effective: Although galvanized steel pipes may have a higher initial cost compared to some other materials, their long lifespan and low maintenance requirements make them a cost-effective choice in the long run.

Specifying Galvanized Steel Pipes

When specifying galvanized steel pipes, it is essential to provide accurate and detailed information to ensure that the pipes meet the desired requirements. Here are some key factors to consider when specifying galvanized steel pipes:

• Galvanized Steel Pipe Size: Specify the nominal pipe size of the galvanized steel pipe based on the intended application. The size is typically expressed in inches or millimeters and refers to the inside diameter of the pipe. Common sizes range from 1/8 inch to 24 inches or more. They have the same basic steel pipe sizes with galvanization.
• Schedule: Determine the appropriate schedule for the galvanized steel pipe based on the specific application requirements. The schedule determines the wall thickness of the pipe and can vary from Schedule 10 to Schedule 160, with Schedule 40 being one of the most commonly used options.
• Length: Specify the desired length of the galvanized steel pipes. Common lengths include 21 feet or 6.4 meters, 24 feet or 7.3 meters, and custom lengths as needed. It is essential to consider the transportation and installation requirements when determining the pipe length.
• Coating: Specify the galvanized coating requirements. Galvanized steel pipes typically have a hot-dip galvanized coating, but you may also specify other coating options if necessary. This includes specifying the thickness of the zinc coating, such as minimum coating weight in ounces per square foot or grams per square meter.
• Standards and Specifications: Identify the relevant industry standards and specifications that the galvanized steel pipes must meet. This may include standards set by organizations like ASTM International (American Society for Testing and Materials) or ANSI (American National Standards Institute).
• Quantity: Clearly state the required quantity of galvanized steel pipes needed for the project. This ensures accurate procurement and delivery.
• Additional Requirements: Specify any additional requirements, such as specific threading, end connections, or special testing needs.
• Application: Provide information about the intended application or use of the galvanized steel pipes. This helps the supplier or manufacturer understand the project requirements and recommend the most suitable product.

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FAQ

Q1: How can I get a quotation from you ?
A1:You can leave us message, and we will reply every message in time. Or we may talk on line by We Chat / Whats app/Email.

Q2:Can I get samples before order ?
A2:Yes, of course. Usually our samples are free. we can produce by your samples or technical drawings. But the customer will pay the freight.

Q3:What product information must I provide before making a purchase ?
A3:Please provide the grade,width,thickness,and surface treatment requirement,as well as the quantities you require.

Q4:What about product pricing information?
A4:Prices vary due to changes in raw materials on a regular basis.

Q5:Can I have a visit to your factory?
A5: Of course.Our factory located at No.1,Hengtong Road,Daqiuzhuang Industrial Zone,Tianjin,China.Customers that from all over the world are welcomed to our factory.

Q6:How long is your lead time?
A6:If it is in stock, it is usually 5-10 days. Or, if there is no inventory, 15 days, depending on the quantity.

Q7:What are your payment terms?
A7:Payment<=1000USD, 100% in advance. Payment>=1000USD 30% T/T in advance ,balance before shippment.If you have another question, please feel free to contact us as below.