Structural Steel Pipe Brand Leader

Mild Steel Tubes / Pipes

Yuantai Derun is a large Mild Steel Tubes / Pipes manufacturer in China

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Mild Steel Tubes supplier

Mild Steel Pipe For Sale

Square O.D.: 10*10-1200*1200mm
rectangular O.D.: 10*15-800*1200mm
round φ:10.3-3620mm
W.T.: 0.5-60mm 
Length: 0.5-26.5m or custmized
Grade:X42/52/60/70,Gr.A/B/C,S235/275/355/420/460,SS400,etc
Standard:
ASTM A500/501,EN10219/10210,JIS G3466,AS1163,API 5L,etc.
Surface Treatment:Bare,oil,painted,galvanized,etc.
MOQ: 2-5 Tons
Capacity: 5 million tons / year
Packaging: PVC package or follow your needs
Port of origin: Tianjin Port
Payment:TT/LC,etc

Mild Steel Pipes

Types Of Mild Steel Tube

Top 500 enterprise
China Top 500 Enterprises
Capacity of manufacturing
22 years manufacturing experiences
Yuantai Derun honor
80 R&D patent technologies
steel tubes
200000 tons of spot inventory

Conventional Common Tubes Fast Delivery

Our regular base mild steel tubes support fast delivery.
ShapeSizeSurface TreatmentWall ThicknessLength
Round3/8 ' mild steel tubeBare/oil/painted/Pre Galvanized/Hot Dip Galvanized / ZAM Coated0.065 "
0.5-24M
Round1/2 ' mild steel tubeBare/oil/painted/Pre Galvanized/Hot Dip Galvanized / ZAM Coated0.120 "0.5-24M
Round3/4 ' mild steel tubingBare/oil/painted/Pre Galvanized/Hot Dip Galvanized / ZAM Coated0.120 "0.5-24M
Round1 1/4' mild steel tubeBare/oil/painted/Pre Galvanized/Hot Dip Galvanized / ZAM Coated0.065 "0.5-24M
Round1 1/2' mild steel tubingBare/oil/painted/Pre Galvanized/Hot Dip Galvanized / ZAM Coated0.065"0.5-24M
Round1 3/4' mild steel tubingBare/oil/painted/Pre Galvanized/Hot Dip Galvanized / ZAM Coated0.120"0.5-24M
Round1 ' mild steel tubingBare/oil/painted/Pre Galvanized/Hot Dip Galvanized / ZAM Coated1.5mm0.5-24M
Round2 ' mild steel pipeBare/oil/painted/Pre Galvanized/Hot Dip Galvanized / ZAM Coated0.120'0.5-24M
Round2.5 inch mild steel pipeBare/oil/painted/Pre Galvanized/Hot Dip Galvanized / ZAM Coated0.060'0.5-24M
Round3' mild steel tubeBare/oil/painted/Pre Galvanized/Hot Dip Galvanized / ZAM Coated0.083'0.5-24M
Round4' mild steel pipeBare/oil/painted/Pre Galvanized/Hot Dip Galvanized / ZAM Coated0.065'0.5-24M
Round5 inch mild steel pipeBare/oil/painted/Pre Galvanized/Hot Dip Galvanized / ZAM Coated1.4mm0.5-24M
Round6 inch mild steel pipeBare/oil/painted/Pre Galvanized/Hot Dip Galvanized / ZAM Coated0.065"0.5-24M
Square12mm mild steel tubeBare/oil/painted/Pre Galvanized/Hot Dip Galvanized / ZAM Coated0.5-0.65mm0.5-24M
Square15mm mild steel tubeBare/oil/painted/Pre Galvanized/Hot Dip Galvanized / ZAM Coated0.5-1.0mm0.5-24M
Square16mm mild steel tubeBare/oil/painted/Pre Galvanized/Hot Dip Galvanized / ZAM Coated0.5-0.9mm0.5-24M
Square18mm mild steel tubeBare/oil/painted/Pre Galvanized/Hot Dip Galvanized / ZAM Coated0.5-1.0mm0.5-24M
Square22mm mild steel tubeBare/oil/painted/Pre Galvanized/Hot Dip Galvanized / ZAM Coated0.5-1.2mm0.5-24M
Square25mm mild steel tubeBare/oil/painted/Pre Galvanized/Hot Dip Galvanized / ZAM Coated0.5-1.2mm0.5-24M
Square28mm mild steel tubeBare/oil/painted/Pre Galvanized/Hot Dip Galvanized / ZAM Coated0.5-1.2mm0.5-24M
Square30mm mild steel tubeBare/oil/painted/Pre Galvanized/Hot Dip Galvanized / ZAM Coated0.5-1.3mm0.5-24M
Square32mm mild steel tubeBare/oil/painted/Pre Galvanized/Hot Dip Galvanized / ZAM Coated0.5-1.8mm0.5-24M
Square38mm mild steel tubeBare/oil/painted/Pre Galvanized/Hot Dip Galvanized / ZAM Coated0.6-2.0mm0.5-24M
Square40mm mild steel tubeBare/oil/painted/Pre Galvanized/Hot Dip Galvanized / ZAM Coated1-2.5mm0.5-24M
Square45mm mild steel tubeBare/oil/painted/Pre Galvanized/Hot Dip Galvanized / ZAM Coated1.0-2.75mm0.5-24M
Square60mm mild steel tubeBare/oil/painted/Pre Galvanized/Hot Dip Galvanized / ZAM Coated 1.0-2.75mm0.5-24M

Advantage Of Mild Steel Tubes And Pipes

Mild Steel Tube Benifit

Mild Steel Tube And Pipe Benifit

1. Mild steel pipes have high tensile and bending strength, making them suitable for high-pressure and demanding engineering applications.
2. Mild steel pipes also have significant advantages in corrosion resistance. Due to its surface treatment process, low-carbon steel pipes are less prone to rusting, have better corrosion resistance, and extend their service life.
3. In terms of environmental protection, the production and use of mild steel pipes have reduced carbon emissions, which is in line with the trend of green and low-carbon development.

Support Services We Offer

Pipe Cutting

Tube Cutting

Yuantai Derun provides mild steel tube cutting services for steel pipe users, including value-added services such as square mild steel tube cutting, rectangular mild steel tube cutting, and circular mild steel pipe cutting.
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Support Services We Offer

Pipe Polishing

Tube Polishing

Yuantai Derun provides mild steel pipe  polishing services for steel pipe users, including value-added services such as square mild steel tube polishing, rectangular mild steel tube polishing, and round mild steel pipe polishing.

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Support Services We Offer

Tube Punching

Tube Punching

Yuantai Derun provides mild steel tube punching services for steel pipe users, including value-added services such as square mild steel tube punching, rectangular mild steel tube punching, and round mild steel tube punching.


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Support Services We Offer

Pipe Galvanizing

Pipe Galvanizing

Yuantai Derun provides mild steel Pipe Galvanizing services for steel pipe users, including value-added services such as square mild steel tube galvanizing, rectangular mild steel pipe galvanizing,round mild steel pipe galvanizing and so on.

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Support Services We Offer

Pipe Bending

Pipe Bending

Yuantai Derun provides mild steel pipe bending services for steel pipe users, including value-added services such as square mild steel pipe bending, round mild steel pipe bending,etc.

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Support Services We Offer

Pipe Painting

Pipe Painting

Yuantai Derun provides pipe painting services for steel pipe users, including value-added services such as square mild steel pipe painting, round mild steel pipe painting,etc.

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Support Services We Offer

Tube Oiling

Tube Oiling

Yuantai Derun provides mild steel tube oiling services for steel pipe users, including value-added services such as square mild steel tube oiling, round mild steel pipe oiling,etc.

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Support Services We Offer

Pipe End Groove

Pipe End Groove

Yuantai Derun provides mild steel pipe end groove services for steel pipe users, including value-added services such as LSAW round pipe end groove,etc.

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Application Of Mild Steel Pipe

Hong Kong-Zhuhai-Macao Bridge

Bridge Structures

In our life and industry, mild steel tubes are widely used in large buildings such as Hong Kong-Zhuhai-Macao Bridge, Yuantai Derun provide high quality mild steel tube .

Cairo CBD

Building Structure

Mild steel tube is widely used in building structures because of its excellent yield strength, tensile strength, elongation and corrosion resistance.Yuantai Derun supplied mild steel tube for Cairo Administrative CBD, Egypt

agricultural machinery factory

Mechanical Manufacturing

In these high-tech fields, the high-temperature stability and mechanical properties of mild steel tube have been fully utilized.Yuantai Derun's early mild steel tubes were supplied to agricultural machinery factories in Henan, China。

Offshore photovoltaic bracket

Offshore photovoltaic bracket

Mild steel tube are also widely used in the fields of Offshore photovoltaic bracket.


Manufacturing Process

The manufacturing process of mild steel tube typically involves the following steps:
ERW mild steel pipe process flow: uncoiling->Shear welding ->straightening ->circular storage ->roll cold forming ->high-frequency resistance welding ->cutting ->storage


LSAW mild steel pipe making process:Steel plate trimming ->pre bending ->JCOE cold forming ->pre welding ->external welding ->internal welding ->sizing ->testing ->storage
SSAW mild steel pipe making process:Steel coil uncoiling ->initial straightening ->butt welding ->precision straightening ->edge cutting ->delivery ->forming internal welding ->cutting ->inspection ->repair welding ->X-ray inspection ->pipe end processing ->hydrostatic pressure test ->ultrasonic inspection ->coating spray marking ->storage

seamless mild Steel tube making process:
Choose suitable metal materials and adjust them as needed.
Heating and piercing: Heat the metal to make it pliable. Then, put it in the piercing machine and make a hole in the steel pipe.
Pipe rolling: The perforated billet is rolled into a pipe.
Reheat pipe: The steel pipe is reheated for the next size.
Sizing (reduction): Size adjustment by cold rolling or heat treatment to achieve the final size.
Heat treatment improves steel pipe's mechanical properties.
Finished Pipe Straightening: Make the pipe's surface smooth and without distortion.
Finishing: Treat the pipe's surface, such as cleaning and polishing.
Inspection: Test the pipe to ensure it meets quality standards.
Storage: Store the pipe in the warehouse after inspection. 

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      Feb 27,2026
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      How to produce Hot Dipped Galvanized steel pipe?
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    • How steel is used in buildings and infrastructure?
             The possibilities for using steel in buildings and infrastructure are limitless. The most common applications are listed below.For buildingsStructural sections: these provide a strong, stiff frame for the building and make up 25% of the steel use in buildings.Reinforcing bars: these add tensile strength and stiffness to concrete and make up 44% of steel use in buildings. 

            Steel is used because it binds well to concrete, has a similar thermal expansion coefficient and is strong and relatively cost-effective. Reinforced concrete is also used to provide deep foundations and basements and is currently the world’s primary building material.Sheet products: 31% is in sheet products such as roofing, purlins, internal walls, ceilings, cladding, and insulating panels for exterior walls.Non-structural steel: steel is also found in many non-structural applications in buildings, such as heating and cooling equipment and interior ducting.Internal fixtures and fittings such as rails, shelving and stairs are also made of steel. 

             For infrastructureTransport networks: steel is required for bridges, tunnels, rail track and in constructing buildings such as fueling stations, train stations, ports and airports. About 60% of steel use in this application is as rebar and the rest is sections, plates and rail track.Utilities (fuel, water, power): over 50% of the steel used for this application is in underground pipelines to distribute water to and from housing, and to distribute gas. The rest is mainly rebar for power stations and pumping houses.
      Feb 27,2026
    • Can we get the some samples?Any charges?
      Yes,you can get available samples in our stock.Free for real samples,but customers need to pay the freight cost.
      Feb 27,2026
    • How do you make our business long-term and good relationship ?

      A: 1.We keep good quality and competitive price to ensure our customers' benefit.

      2.We respect every customer as our friend and we sincerrly do business and make friends with them, no matter where they come from.

      Feb 27,2026
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    Yuantai team has over 21 years of experience in steel pipe project applications, specializing in the production, manufacturing, and customization of square rectangular, and circular steel pipes. Warmly welcome project procurement managers, individual owners, designers, and overall sellers, etc. Write down your requirements and receive professional quotes and technical support.
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