Nice Quality Steel Pipe En ASTM A501 Stkr 400 DN50 Hot Dipped Galvanized Steel Carbon Round Hollow Section Galvanized Steel Tube Price Metal for Building

• Customization: Available
• After-sales Service: Support
• Warranty: One Year
• Model NO.: round 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: Round
• Thickness: 0.8-60mm
• Length: 6m, 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
• Delivery Time: 7-30 Days
• Materials: ASTM/AISI/SGCC/Chcc/Tdc51dzm/Tdc52dts350gd/Ts550gd
• Zinc Coating: 30-275G/M2
• 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
• Invoicing: by Theoretical Weight
• Grade: Q235, Q235B, S275, S275jr, A53, St37, etc
• Transport Package: Bundles
• 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

ASTM A53/API 5L/ASTM A106/BS 1387:1985/EN10255
Black/Galvanized Steel Tube
Tube	Inch	O.D.(inch)	O.D.(mm)	W.T.(inch)	W.T.(mm)	Pcs/Bundles
Light	1/2'	0.841	21.40	0.079	0.20	153
	3/4'	1.059	26.90	0.091	2.30	127
	1'	1.328	33.80	0.102	2.60	91
	11/4'	1.670	42.50	0.102	2.60	61
	11/2'	1.903	48.40	0.114	2.90	61
	2'	2.370	60.20	0.114	2.90	37
	21/2'	2.991	76.60	0.126	3.20	37
	3'	3.491	88.70	0.126	3.20	19
	4'	4.481	113.90	0.142	3.60	19

Medium	1/2'	0.856	21.70	0.102	2.60	127
	3/4'	1.072	27.20	0.102	2.60	101
	1'	1.348	34.20	0.126	3.20	61
	11/4'	1.687	42.90	0.126	3.20	51
	11/2'	1.919	48.80	0.126	3.60	44
	2'	2.394	60.80	0.142	3.60	29
	21/2'	3.014	76.60	0.142	4.00	24
	3'	3.524	89.50	0.157	4.50	19
	4'	4.524	114.90	0.177	4.50	14
	5'	5.535	140.6	0.197	5.00	10
	6'	6.539	116.1	0.197	5.00	7

Heavy	1/2'	0.856	21.70	0.126	3.20	127
	3/4'	1.072	27.20	0.126	3.20	101
	1'	1.346	34.20	0.157	4.00	61
	11/4'	1.687	42.90	0.157	4.00	51
	11/2'	1.919	48.80	0.157	4.00	44
	2'	2.394	60.80	0.177	4.50	29
	21/2'	3.014	76.60	0.177	4.50	24
	3'	3.524	89.50	0.197	5.00	19
	4'	4.524	114.90	0.212	5.40	14
	5'	5.535	140.6	0.212	5.40	10
	6'	6.539	166.1	0.212	5.40	7

 

ASTM A 795 BLACK AND GALVANIZED WELDED AND SEAMLESS STEEL PIPE FOR FIRE PROTECTION USE
Availiable Size For Sch10 Pipe(Light-Weight Pipe)
Size			Thickness	Mass	Test Pressure
NPS	DN	OD(mm)	T.K(mm)	Kg/m	Mpa
3/4	20	26.7	2.11	1.28	4.8
1	25	33.4	2.77	2.09	4.8
1-1/4	32	42.2	2.77	2.69	6.9
1-1/2	40	48.3	2.77	3.11	6.9
2	50	60.3	2.77	3.93	6.9
2-1/2	65	73.0	3.05	5.26	6.9
3	80	88.9	3.05	6.46	6.9
4	100	114.3	3.05	8.37	8.3
5	125	141.3	3.40	11.56	8.3
6	150	168.3	3.40	13.83	6.9
8	200	219.1	4.78	25.26	5.5
10	250	273.1	4.78	31.63	4.8
Availiable Size For Sch40 Pipe(Standard-Weight Pipe)
Size			Thickness	Mass	Test Pressure
NPS	DN	OD(mm)	T.K(mm)	Kg/m	MPa
1/2	15	21.3	2.77	1.27	4.8
3/4	20	26.7	2.87	1.69	4.8
1	25	33.4	3.38	2.50	4.8
1-1/4	32	42.2	3.56	3.39	6.9
1-1/2	40	48.3	3.68	4.05	6.9
2	50	60.3	3.91	5.44	6.9
2-1/2	65	73.0	5.16	8.63	6.9
3	80	88.9	5.49	11.29	6.9

     
Do you know the difference between Hot-dip galvanized steel pipe and Pre galvanized steel pipe?Please check following!
 

Hot-dip galvanized pipe	Pre galvanized pipe
First,produce ordinary steel pipes with the required welding steel pipe specifications from the steel raw materials,and then proceed with galvanized treatment.The galvanized steel pipe produced in this way is called hot-dip galvanized steel pipe,also konwn as hot-dip galvanized steel pipe.Hot-dip galvanized is the process of immersing metal into a zinc melt.To manufacture galvanized steel using this method,we need to follow four steps:cleaning the surface,flux,hot-dip galvanized coating,and cooling.	The steel raw materials are first galvanized to produce galvanized strip steel,and then processed to produce steel pipes,which are called galvanized strip steel pipes or pre galvanized steel pipes.One of the davantages of pre galvanized over hot-dip galvanized is its better appearence.Pre galvanized steel includes some steps of hot-dip galvanized,such as  cleaning the surface,immersing in a hot-dip zinc bath,and the coiling process.
Difference between hot-dip galvanized pipe and pre-galvanized
Coating thickness:The minium average requirement in BS EN ISO1461 is a thick coating of 45~85 μm	Coating thickness:The coating thickness may vary,but the coating thickness off plate is usually about 20 μm,and the coating thickness of pipe and wire is usually about 20~30μm.
Continous coating:Apply continuous coating to the entire object	Continuous coating:Cutting edge uncoated area
Coating bonding:Strong metallurgical bonding with the base steel	Coating bonding:Strong matallurgical bonding with the base steel
Coating formability:It is not recommended to form after hot-dip galvanized as this may damage the coating	Coating formability:The coatings can from normally without causing any damage
Coating appearance:Usually bright,but variable	Coating appearance:Usually achieving uniform brightness
Wear resistance:The thicker hard zinc iron alloy layer has high wear resistance	Wear resistance:The alloy layer reduces wear resistance
Sacrificial protection:Provided the hightest level of sacrificial protection	Sacrificial protection:Provided the hightest level of sacrificial protection

Product Details

 

 

We can do	1. All the pipes are high-frequency welded.
	2. Both inner and outer welded stabs can be removed.
	3. Special design available according to requirements.
	4. Pipe can be necked down and punched holes.
	5. Supplying BV or SGS Inspection if the client needs it.

 

Process Flow

 

 

Hot dip galvanized square steel pipes are engineered to provide exceptional strength and corrosion resistance, making them a preferred choice in construction and industrial applications.

Manufacturing Process

The hot dip galvanizing process involves three key steps: surface preparation, galvanizing, and inspection . First, the square steel pipes are cleaned to remove impurities such as grease, oil, and rust. This is followed by a treatment with a flux solution to prepare the surface for galvanizing . The pipes are then immersed into a bath of molten zinc at temperatures around 450°C to 460°C (850°F to 860°F). As the pipes are withdrawn from the bath, a layer of zinc alloy forms on the surface, creating a protective coating.

Material Properties

Hot dip galvanized square steel pipes are known for their high tensile strength, which can range from 195 MPa to 630 MPa depending on the grade of steel used . The coating provides a barrier against corrosion, and the sacrificial nature of zinc protects the underlying steel even if the coating is damaged . The pipes also exhibit good ductility and can be easily fabricated into various shapes and sizes.

Applications

These pipes find extensive use in construction for building frameworks,bridge, and infrastructure due to their structural stability and strength . They are also used in the manufacturing of automotive components, agricultural equipment, and in the creation of handrails and fencing systems . Additionally, hot dip galvanized square steel pipes are used in greenhouse construction and sports equipment due to their corrosion resistance and durability .

Advantages

Corrosion Resistance: The zinc coating provides a barrier against corrosion, extending the lifespan of the pipes.
Strength: The high tensile strength of the pipes makes them suitable for heavy-duty applications.
Cost-Effective: Galvanized pipes require minimal maintenance, reducing lifecycle costs.
AestheticAppeal: The smooth, shiny surface of the zinc coating gives the pipes an attractive finish.

Hot dip galvanized square steel pipes offer a combination of strength, corrosion resistance, and durability, making them ideal for a wide range of applications. The hot dip galvanizing process ensures a high-quality, uniform coating that enhances the performance and longevity of the pipes. Whether used in construction, agriculture, or industrial applications, these pipes provide a reliable and cost-effective solution.

 

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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, 15-30 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.