En10255 S235jr Hot Dipped Galvanized Steel Pipe DN40 Round Welded Tube for Construction

• Customization: Available
• Type: Welded
• Technique: Hot DIP Galvanized
• Model NO.: DN40
• Material: Carbon Steel
• Surface Treatment: Galvanized
• Usage: Pipeline Transport, Boiler Pipe, Oil/Gas Drilling, Machinery Industry, Chemical Industry, Mining, Construction & Decoration, Special Purpose
• Section Shape: Round
• Standard: ASTM, GB, JIS, DIN, BS, ASTM A106-2006
• Grade: Q195-Q345, A53-A369, St35-St52, 10#-45#
• Thickness: 1mm - 10mm
• Outer Diameter: 21.3 mm - 273 mm
• Tolerance: +/-5%
• Processing Service: Bending, Welding, Punching, Cutting
• Secondary or Not: Non-Secondary
• Pipe Ends: Plain, Bevel, Threaded or Grooved
• Alloy or Not: Non-Alloy
• Product Name: Pipe, Tube
• Length: as Customers' Requirement
• Zinc Coating: (300-600)G/M2 ( or Customized)
• End Protector: None or Plastic Caps
• Transport Package: Packing by Steel Strips
• Specification: 21.3-273MM / 1/2"-10" / DN 15-250
• Trademark: Yanfang
• Origin: China
• HS Code: 7306309000
• Production Capacity: 50000 Tons Per Month

Product Description

Specification

TECHNICAL PARAMETERS
Product Name	Galvanized Steel Round Pipe
Keywords	Steel Pipe
Standard	BS1139-1775, EN1039, EN10219, JIS G3444:2004, GB/T3091-2001, BS1387-1985, DIN EN10025, ASTM A53 SCH40/80/STD
Material	Q235, Q355, S235JR, S275JR, STK400, STK500, S355JR, GR.B-D
Thickness	Pre Galvanized:0.4-3.0mm.
	Hot Dipped Galvanized: 1.6- 25mm.
Length	5.80 Meters Or 6 Meters As Usual Or By Customer'sRequirements
Out Diameter	Pre Galvanized:1/2''-4''(21.3-114.3mm).
	Hot Dipped Galvanized:1/2''-10''(21.3Mm-273.1mm).
Zinc Coating	Pre Galvanized:50-150G/M2
	Hot Dipped Galvanized 200-400G/M2
Technique	Electronic Resistance Welded (ERW)
Surface Treatment	Pre-Galvanized, Hot Dipped Galvanized, Electro Galvanized, Black, Painted, Threaded, Engraved, Socket.
Application	Hot Dipped Galvanized Steel Pipe Is Widely Used In Construction, Structure, Accessorize,Construction, Machinery Parts,Fluid Transportation,The Stress Parts Of The AutomobileTractor Parts And So On.
Packing	1.Big OD:In Bulk
	2.Small OD:Packed By Steel Strips
	3.Woven Cloth With 7Slats
	4.According To The Requirements Of Customers
Delivery Time	Within 7-15 Days After Receiving
Payment	30% TT Deposit In Advance, The Balance Payable Against Copy Of B/L; Or Irrevocable Sight L/C.

Outer Diameter & Wall Thickness & Length for Products Range list:

Outer Diameter		Wall Thickness	Length
Inch	mm	mm	meter
1/2"	21.3mm	0.6mm-3.0mm	0.3m-12m
3/4"	26.9mm	0.6mm-3.0mm	0.3m-12m
1"	33.4mm	1.0mm-3.0mm	0.3m-12m
1-1/4"	42.3mm	1.0mm-4.0mm	0.3m-12m
1-1/2"	48.3mm	1.0mm-4.0mm	0.3m-12m
2"	60.3mm	1.5mm-4.0mm	0.3m-12m
2-1/2"	76.1mm	1.5mm-4.0mm	0.3m-12m
3"	88.9mm	1.5mm-9.5mm	0.3m-12m
4"	114.3mm	2.0mm-9.5mm	0.3m-12m
5"	141.3mm	3.0mm-9.5mm	0.3m-12m
6"	168.3mm	3.0mm-12.0mm	1.0m-12m
8"	219.1mm	3.2mm-12.0mm	1.0m-12m
10"	273mm	3.2mm-12.0mm	1.0m-12m
12"	323.8mm	6.0mm-15.0mm	1.0m-12m
14"	355.6mm	8.0mm-15.0mm	1.0m-12m
16"	406.4mm	8.0mm-20.0mm	1.0m-12m

SUPERIOR CORROSION PROTECTION

ENHANCED STRUCTURAL STRENGTH

Our round pipes feature hot-dip galvanizing that creates a metallurgical bond between zinc and steel. This protective coating provides exceptional resistance to moisture, salt, chemicals, and atmospheric corrosion, ensuring reliable performance in harsh environments for decades.

The circular cross-section provides superior resistance to external pressure and bending forces compared to other shapes. This inherent geometric advantage makes the round pipe ideal for applications requiring high structural integrity and load-bearing capacity.

OPTIMAL FLOW CHARACTERISTICS 

EXCELLENT WORKABILITY AND FABRICATION

The smooth internal surface and circular geometry minimize friction and turbulence, making it perfect for fluid transport applications. Whether used for water, compressed air, or other low-pressure fluids, it ensures efficient flow with minimal pressure loss.

Despite the protective coating, our galvanized round pipes maintain excellent weldability, cutting, and bending properties. They can be easily customized and fabricated to meet specific project requirements while preserving the integrity of the galvanized layer.

Tangshan Yanfang Trading Co., Ltd. is located in Tangshan, China's key iron and steel hub — home to the largest port in North China.  With over 12 years of export experience in the steel industry, Yanfang has partnered with 18 overseas clients, helping them rank among the top five in their local markets.  The company mainly deals in steel coils, steel plates, galvanized steel coils, cold-rolled steel coils, steel pipes, galvanized steel pipes, Steel Profile, sheet metal stamping parts and machining services.

 

We maintain sufficient spot inventory covering all conventional specifications, and are capable of providing a rapid response to customers' urgent orders.

Our products can be customized and manufactured in full compliance with ASTM, JIS, DIN international standards.

 

Advanced Processing Capabilities.

We are equipped with complete independent processing equipment to provide comprehensive metal fabrication services, including precision laser/flame cutting, metal stamping, professional welding, heat treatment and mechanical machining, which fully meets all OEM customized requirements. We also support a full range of surface treatment solutions, such as galvanizing, electrostatic spraying, powder coating, painting and anti-rust oil treatment.

Have a strict  product quality control system ,and we have a very professional  team to ensure every detail in the trade process, which can greatly save your time and energy.

Our steel products are exported to more than 20 countries and regions in south east   Asia, Africa,  North America,South America, the Middle East.

Upholding the business philosophy of Quality First, Customer Oriented, we sincerely welcome long-term cooperation with global clients and partners.

Q1:How soon will my order be delivered?
A:We offer outstanding delivery efficiency: standard goods are shipped within 3 days after deposit payment, while customized products take 15–30 days for delivery.

Q2:Do you have quality control?

A:Every process will be checked by responsible QC which insures every product's quality, We implement full-process quality control, with all raw materials traceable throughout the whole production chain.

 

Q3:Do you provide samples?

A:Samples are provided free of charge, while customers only need to bear the freight cost. This freight fee will be deducted from your formal order once we establish cooperation.

For our regular and long-term cooperative customers, both samples and freight are completely free of charge.

 

Q4:How do  pay and payment option?

A:Payment Terms:

1,100% T/T advance

2,30% T/T and balance against copy of documents.

3,30% T/T advance, balance L/C at sight.

 

Q5:Can I go to China to inspect the factory?

A:If you want to come to inspect the factory, our consultant will arrange the schedule for you. In addition, we support ZOOM videos for online factory inspection.

MOQ: We have stock of common sizes at hand, so one ton per size is accepted. In order to delivery by shipment, it is better to be 25 tons or more to fit container.

Packing:  Professional packing teams which keep every packing safely. 

Q6:Can you provide customized services?

A:Our products can be customized and manufactured in full compliance with ASTM, JIS, DIN international standards.

 

Q7:Q: How can I get your quotation as soon as possible?
A: The email and fax will be checked within 24 hours,meanwhile,the Skype,Wechat and WhatsApp will be online in 24 hours.Please send us your requirement and order information,specification(Steel grade,size,quantity,destination port),we will work out a best price soon.

Q8: Do you accept the third party inspection?
A: Yes absolutely we accept.