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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.

Circular Hollow Section

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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

Circular Hollow Section2

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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

High quality cheap price Hot Rolled coil

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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.

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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.

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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

hot rolled coil price China

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hot rolled coil price China

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Industrial square steel pipe supplier

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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

Square tubing supplier manufacturer

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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

C purlin Malaysia Aisan

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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

ERW welded carbon steel pipe United Arab Emirates

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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

Wholesale GI Pipe

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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

EN10219 S355J2H LSAW Pipe supplier Asian

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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

Z purlin Z section

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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

hot rolled coil Malaysia

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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

spiral pile

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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

Steel Window Profiles

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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

ERW pipe supplier Asian

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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

LSAW steel pipe supplier

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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

galvanized steel coil

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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

Square tube project

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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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Gi pipe pre galvanized pipe-pre-galvanized pipes-TIANJIN YUANTAI DERUN PIPE MANUFACTURING GROUP CO., LTD-
pre-galvanized pipes

products

Home >> products >> Steel Pipe & Steel tube >> pre-galvanized pipes

Gi pipe pre galvanized pipe
Gi pipe pre galvanized pipe
Gi pipe pre galvanized pipe
Gi pipe pre galvanized pipe
Gi pipe pre galvanized pipe
Outer Diameter:13-266.6mm

Thickness:0.5-2.5mm
Length:1-12m

Product Specification：

Specification

Outer Diameter

13-266.6mm

Thickness

0.5-2.5mm

Length

1-12m

Technique

Gi pipe pre galvanized pipe or hot dipped galvanized

Steel grades

Q195, Q235, Q355

Application

Used For Structure, Accessorize And Construction

Package

in the bundle, or wrapped with waterproof cloth as per the customers' requirement

Delivery Time

10 days if stock is available; 30 days for new production

Loading Port

Xingang, Tianjin, China

MOQ

25 tons

Others

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.



1. Overview of galvanized pipes:

In order to improve the corrosion resistance of steel pipes, general steel pipes are galvanized. Galvanized pipes (galvanized steel pipes) are divided into two types: hot-dip galvanizing and cold-dip galvanizing. Hot-dip galvanizing has a thick zinc layer and has the advantages of uniform coating, strong adhesion, and long service life. Cold-dip galvanized pipes are low-cost, have not very smooth surfaces, and have much lower corrosion resistance than hot-dip galvanized pipes, so they have been gradually phased out.

2. Classification and characteristics of galvanized pipes:

Galvanized pipes are divided into hot-dip galvanized steel pipes and cold-dip galvanized steel pipes, among which cold-dip galvanized steel pipes have been gradually phased out.

(1) Hot-dip galvanized pipe/hot-dip galvanized steel pipe

Hot-dip galvanizing reacts molten metal with an iron matrix to produce an alloy layer, thereby combining the matrix and the coating. The manufacturing of hot-dip galvanized pipes is to first pickle the steel pipes to remove the iron oxide on the surface of the steel pipes. After pickling, they are cleaned in an aqueous solution of ammonium chloride or zinc chloride or a mixed aqueous solution of ammonium chloride and zinc chloride and then sent into the hot dip plating tank.

Hot-dip galvanized steel pipe is a complex physical and chemical reaction between the steel pipe matrix and the molten plating bath to form a corrosion-resistant zinc-iron alloy layer with a tight structure. The alloy layer is integrated with the pure zinc layer and the steel pipe matrix, so hot-dip galvanized steel pipes have the advantages of uniform coating, strong adhesion, and long service life.

(2) Cold galvanized pipe/cold galvanized steel pipe

Cold galvanizing is electro-galvanizing. The amount of galvanizing is very small, only 10-50g/m2. Its corrosion resistance is much worse than that of hot-dip galvanized pipes. Because the zinc layer is thin, the zinc layer simply adheres to the steel pipe matrix and easily falls off, so the corrosion resistance of cold-dip galvanized steel pipes is poor.


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