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about us

Tianjin Yuantai Derun Pipe Manufacturing Group Co., Ltd., established in March 2002, is the biggest manufacturer specializing in ERW square&rectangular tube/pipe, hollow section structure pipe, galvanized pipe and spiral welding pipe in China. Annual output reaches 5 million tons.Yuantai Derun has 59 production lines of black ERW pipe, 10 production lines of galvanized pipe and 3 production lines of spiral welding pipe. Square pipe from 20*20*1mm to 500*500*40mm, rectangular pipe from 20*30*1.2mm to 400*600*40mm, welded pipe from 2”—60” can be manufactured. Yuantai Derun can manufacture square rectangular pipes as per the standards of ASTM A500, JIS G3466, EN10219, DIN2240, BS1387, AS1163.

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January 1993

Key team members of Yuantai Derun group began technical job in Tianjin Daqiuzhuang tube factory.

June 2002

Tianjin Yuantai Industry & Trade Co., Ltd. was founded, specialize in square, rectangular hollow steel pipe, hot galvanized welded (hot dip galvanized) square tube, the registered capital is USD 10 million.

May 2004

One of Yuantai subsidiaries Tangshan Lituo Steel Tube Co., Ltd. was established, specialize in square rectangular straight welded hollow steel pipe， registered capital is USD 10 million.

April 2005

Yuantai Steel Square Pipe Co. Ltd. was established, specialize in square welding hollow steel tube and galvanized tube, the registered is USD 2 million.

March 2010

Tianjin Yuantai Runxiang commercial trade company was established, specialize in strip steel trade, galvanized pipe agent, etc., the registered capital is USD 2 million.

March 2010

Tianjin Yuantai Derun pipe manufacturing group Co. Ltd. was formally established, marking that the production of high-frequency welded black, galvanized square pipe, spiral welded pipe, pipe logistics and pipe trade as one of the large-scale joint enterprise Yuantai Derun group was formally established, the group registered capital is USD 20 million.

March 2010

Tianjin Yuantai Derun Investment Co., Ltd. was formally established, specialize in steel pipe industry chain,lower industry mergers and acquisitions and industrial real estate development, the registered capital is USD 2 million.

August 2013

Tianjin Derun Runfeng pipe manufacturing Co. Ltd was established, specialize in hot galvanized (hot galvanizing) processing business, the registered capital is USD 8 million.

March 2015

Tianjin Yuantai Yuanda anti-corrosion insulation pipe Co., Ltd. was established, specialize in spiral welded pipe production and sales, the registered capital is USD 2 million.

August 2015

Tangshan Yuantai Derun Pipe Co., Ltd. was established, specialize in steel strip, steel pipe trade, registered capital is USD 1 million.

March 2016

Tianjin Yuantai Derun International Trade Co., Ltd was established,mainly engaged in international import and export business for Yuantai Group, registered capital is USD 2 million.

Products

Circular Hollow Section

DescriptionStandards: BS, GB, BS EN 10297, BS EN10025, BS EN10217, BS EN10219, BS EN10296, GB/T 13793-1992, GB/T 14291-2006Grade: Q195-Q345, Q195, Q215, Q235Thickness: 0.8 - 18mm (SCH30, SCH40, STD, XS, SCH80, SCH160, XXS)Section shape: roundOuter diameter:1/2-18” (20-457mm)Application: structure pipeTechnique: ERWAlloy or not: non-alloyEnds: plain ends/threading ends/bevelledPacking: bundles/PVC cover bundleUsages: conveying gas, structural steel pipes purpose

Products

Circular Hollow Section2

Name: Rectangular hollow sectionsStandard: ASTM A500, JIS G3466, EN10219, DIN2240, BS1387, AS1163.Main steel tube grade: A.B.C, Q195, Q215, Q235, Q355Specification: 20*30*1.2mm to 400*600*40mm

Products

High quality cheap price Hot Rolled coil

We have stocks of various grades of carbon steel coil and support third-party inspections. China-leading supplier of carbon steel coil, factory wholesale price is low.

Products

C Channel Solar Panel Roof Mounting Brackets-Steel Price

C channel steel ground solar panel mounting brackets with 20 years waranty, suitable for diferent terrains. Solar panelorientation can be both portrait and landscape. Less components, strong and easy to be instal.

Products

Steel Seamless Pipe Wholesale

1.Craftsmanship ExcellenceOur steel seamless pipes are crafted with meticulous attention to detail, ensuring each product meets the highest quality standards. Utilizing the latest in manufacturing technology, we employ a precise extrusion process that eliminates the need for welding, resulting in a

Products

hot rolled coil price China

What is hot rolling? What is cold rolling?1. Hot rollingUse continuous casting or initial rolling slab as raw material, heat it in a step-type heating furnace, remove phosphorus with high-pressure water, and then enter the rough rolling mill. The rough rolling material is cut and then enters the fin

Products

Industrial square steel pipe supplier

Yuantai Derun Steel Pipe Manufacturing GroupProduct Specifications:Outer diameter: 1010-12001200mm, customization is acceptable.Wall thickness: 0.5-60mm, customization is acceptable.Length: 0.5-26.5M, can be cut according to demand.Tolerance: ±5% or as required.Minimum Order Quantity (MOQ): 2-5 ton

Products

Square tubing supplier manufacturer

How to make square tubing？The production process of square tubes and square tubes includes preparation, cutting and adjustment, bending and forming, welding and connection, surface treatment, and quality inspection. Each stage requires professional equipment and tools, and control parameters to ens

Products

C purlin Malaysia Aisan

C purlin Malaysia Aisan:C purlin Malaysia Aisan is automatically processed and formed by C-shaped steel forming machines. C-shaped steel forming machines can automatically complete the forming process of C-shaped steel according to the given C-shaped steel size.What are the types of C-shaped s

Products

ERW welded carbon steel pipe United Arab Emirates

What isERW pipe? Can you distinguish between seamless pipe and welded pipe?1. Distinguish from the appearance:(1) First check whether there are welds and bulges on the inner and outer surfaces.If it is a steel pipe without surface coating, first check the inner and outer surfaces of the steel

Products

Wholesale GI Pipe

Product Specification：SpecificationOuter Diameter13-266.6mmThickness0.5-2.5mmLength1-12mTechniqueGi pipe pre-galvanized pipeor hot dipped galvanizedSteel gradesQ195, Q235, Q355ApplicationUsed For Structure, Accessorize And ConstructionPackagein the bundle, or wrapped with waterproof cloth as

Products

EN10219 S355J2H LSAW Pipe supplier Asian

Product details:Product nameEN10219 S355J2H LSAW Pipe Supplier AsianMaterialQ195-A~Q275-A Q195B~Q275B 10# ~75# 16Mn, 5MnV, 09MnV 40Cr,30CrMnSi,45Mn2,40MnB, ASTM A53 A36, A106,API 5L A106 Gr.B etcSurfaceCoated/galvanized/blackTechniqueHot rolled/cold rolled /cold drawn /seamless/erwDimensionOuter Dia

Products

Z purlin Z section

Product Specification:Size40-500mmWall thickness1.5-4mmHeight20-300mmTechniqueHot Rolled SteelSurfaceGalvanized & Black or as your requestTreatmentpolish;painted;galvanized;punchedMaterial GradeJIS, ASTM, GB, EN, etc.Packagein bundleDelivery Time20-25 days for productionLoading PortXingang

Products

hot rolled coil Malaysia

Product Details:Product nameHot rolled coilColorCustomizationStandardASTM,AISI,JIS,GB, DIN,ENTechniqueHot RolledTolerance±1% or as requiredThickness0.8-25.4mmWidth100mm-4200mmLength200mm-18000mm or as the customer's requirementPlace of OriginChinaMOQ2-5 TonsProcessing ServiceBending, Welding, D

Products

spiral pile

The spiral pile is made of high-strength steel, and its surface is usually hot-dip galvanized. When used as a foundation, its corrosion resistance and service life are effectively enhanced, and it gradually replaces the traditional concrete foundation in construction projects.When used as a building

Products

Steel Window Profiles

Requirements for glass curtain wall materials and equipment:1. General regulations:a. Materials for glass curtain walls should comply with the relevant provisions and design requirements of current national standards. Materials that do not yet have corresponding standards should comply with design r

Products

ERW pipe supplier Asian

Product Details:Place of Origin Tianjin, ChinaAlloy Or Not Non-AlloyStandard JISTechnique ERWGrade ASTM A106/A53 Gr.BDelivery Time 7-30daysApplication Fluid Pipe, Gas Pipe, OIL PIPE, Structure PipeSpecial Pipe Thick Wall PipeThickness 0.6 - 6 mmLength 6m, 6.4MCertificate JIS, ISO9001, etc.Processing

Products

LSAW steel pipe supplier

Product details:Product nameLSAW welded steel pipeMaterialQ195-A~Q275-A Q195B~Q275B 10# ~75# 16Mn,5MnV,09MnV 40Cr,30CrMnSi,45Mn2,40MnB, ASTM A53 A36, A106,API 5L A106 Gr.B etcSurfaceCoated/galvanized/blackTechniqueHot rolled/cold rolled /cold drawn /seamless/erwDimensionOuter Diameter: 5mm-630mm&nbs

Products

galvanized steel coil

Product Details:StandardAISI, ASTM, DIN, JIS, GB, JIS, SUS, EN, etc.MaterialSGCC/ CGCC/ DX51D+Z, etc.Thickness(mm)0.12-4.0mmWidth(mm)30mm-1500mmToleranceThickness: ±0.01 mmWidth: ±2 mmCoil internal diameter508-610mm or as per your requestZinc Coating30g - 275g / m2SpangleBig spangle, Regular spang

Products

Square tube project

Product Details:Size20*20-500*500mm or as the requirement, large size steel tube above 500*500 can be produced.Thickness1.3-40mm or as the requirementLength5.8m/6m/12m or as the requirementSteel gradesASTM A500, ASTM A501, BS 1387, EN10219, EN10210, ASTM A53, JIS G3466,GB/T9711, GB/T3094, GB/T

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Omega steel tubes, characterized by their distinct 'Ω' shape, offer a range of applications across various industries due to their structural integrity and versatility. Here's an in-depth look at the uses of Omega steel tubes:Request FREE Quotation1.Structural Support in Construction&nb

Hot-Dipped Galvanized Steel Coil Supplier - GI coils

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Are galvanized pipes safe for drinking water?

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In the realm of construction and engineering, the choice of materials plays a crucial role in determining the durability, longevity, and sustainability of structures. Two materials that have gained significant attention are Zinc-Magnesium-Aluminum (Zn-Al-Mg) square tubes and traditional Galvanized square tubes. This article will explore the advantages of both materials, providing a comprehensive comparison to aid in material selection for various applications.

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Zinc-Aluminum-Magnesium (ZAM) coated steel coils are a type of pre-coated steel product that has gained significant attention in various industries due to their superior corrosion resistance and unique self-healing properties. This advanced coating technology provides a robust solution for applications where traditional galvanized coatings may not suffice.

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Email: yuantai@yuantai-steel.com
Moble/Whatsapp: +8618222029592
Address: No. 1 Science and Technology Road, Daqiuzhuang Industrial Zone Jinghai Tianjin China

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ZAM steel tube

Outer Diameter:

Square tube: 20×20-200×200mm
Rectangular tube: 20×30-100×200mm
Round pipe: 20-203mm
Thickness: 0.8-3.0mm
Length: 0.5-24M

Product Details:

Outer Diameter	SHS:20×20-200×200mm RHS:20×30-100×200mm CHS:20-203mm
Thickness	0.8-3.0mm
Length	0.5-24M
Product material	51D 52D 53D 300 340 400 420 440 490 570 ASTM A 1046 JIS G 3323-2012 EN10324
Coating weight	ZM20~ZM400
MOQ	2-5 Tons
Payment method	TT/LC
Delivery time	7-35 days
Capacity	3 million tons/year
Port of shipment	Tianjin Xingang Port

The role of each element in the ZAM steel tube

Like high-strength steel, the good corrosion resistance of zinc-aluminum-magnesium is determined by its structure, and the structure is determined by chemical composition and cooling rate. Next, we will discuss the choice of chemical composition of zinc-aluminum-magnesium coating and the composition of each element.

1. The role and influence of magnesium

The role of magnesium is firstly to improve the corrosion resistance, which has been fully analyzed before; secondly, adding a little 0.1% magnesium in the plating bath can improve the wettability of the strip steel in the plating solution and reduce the surface tension of the plating bath, to reduce the occurrence of missing plating defects, because the oxide of magnesium is very not dense, and basically exists in a very loose state. This seems to be somewhat complementary to the characteristics of aluminum, which is of great significance for the production of high-strength steel with higher alloy content by using coatings with higher aluminum content. However, in the zinc-aluminum-magnesium plating solution, the content of magnesium is relatively high, and the problem that the magnesium oxide is not dense will bring a series of side effects, which becomes a major difficulty in the production of hot-dip galvanized aluminum-magnesium products.

2. The role and influence of aluminum

First of all, adding aluminum on the basis of galvanizing can significantly improve the corrosion resistance and heat resistance, which is also the case in the zinc-aluminum-magnesium coating; secondly, adding a small amount of aluminum during galvanizing can inhibit the zinc liquid from interacting with iron. The reaction, thinning the Fe-Zn compound layer; third, aluminum can inhibit the limitation of magnesium oxidation, aluminum oxide is very dense and can reduce the impact of magnesium loose oxide, and if it is just right, make the aluminum-magnesium Oxide can form a film, causing defects in the product.

Among these three characteristics, the first one has only advantages and no disadvantages, but the second and third are double-edged swords. Like magnesium, aluminum is present in high concentrations in zinc-aluminum-magnesium baths. On the one hand, aluminum inhibits the reaction between zinc and iron, but the reaction between aluminum and iron is more intense, which becomes the main contradiction; on the other hand, the problem that aluminum is extremely easy to oxidize will also bring a series of problems, which also become the main problem in the production of zinc, aluminum and magnesium products.

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