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Galvanized Steel Round Tubing
- group name
- galvanized steel pipe
- Min Order
- 25 ton
- brand name
- Yuantai Derun Steel Pipe Manufacturing Group
- model
- GI round tubing
- Nearest port for product export
- XINGANG PORT TIANJIN CHINA, TANGSHAN CHINA, SHANGHAI CHINA, DALIAN PORT
- Delivery clauses under the trade mode
- FOB, CFR, CIF, EXW
- Acceptable payment methods
- T/T, L/C, Cash
- update time
- Sun, 09 Nov 2025 08:52:43 GMT
Paramtents
Thickness 0.5- 16 mm
OD(outer diameter) 10.3mm-3620mm
Tolerance as required
Length 0.5-24M according to client requirement
Standards ASTM A500/A501,EN10219,EN10210, JI
Materials Gr.A,Gr.B,Gr.C,S275J0H,S355JR,S355J0H,S355J2H,A36,
Packaging Customers't Requirement
Delivery Time 7-30 Days
Packging & Delivery
-
Min Order25 ton
Briefing
Yuantai Derun - The Leading Galvanized Steel Round Tubing Manufacturer in China, Offering OEM, ODM, and Wholesale Services.
Detailed
Galvanized Steel Round Tubing
Galvanized Steel Round Tubings can be divided into two categories: hot-dip galvanized steel round tubings and galvanized strip round pipes. Galvanized steel round tubing have better corrosion resistance and oxidation resistance than ordinary black round pipes.
Two Type Of Galvanized Steel Round Tubing
At Yuantai Derun ,we can produce 2 type of galvanized steel round tubing,one is pre galvanized Round steel tubing ,another one is the Hot-Dip Galvanized Steel Round Tubings.
Pre Galvanized Round Steel Tubing
Hot-Dip Galvanized Steel Round Tubings
Application Of Galvanized Round Tubings
Galvanized steel round tubings are widely used in manufacturing industries such as construction, machinery, coal mining, chemical engineering, electricity, railway vehicles, automotive industry, highways, bridges, containers, sports facilities, agricultural machinery, petroleum machinery, and mining machinery.
Complete Galvanized Round Tubing Sizes For You
Let us to see galvanized steel round tubing sizes
（1）Pre Galvanized Steel Round Tubing Sizes
|
Size
|
O.D.(mm) | THK(mm) | Minimum wall thickness |
weld pipe(6m)
|
galvanized pipe
|
||
Nominal inner diameter | inch | Meter weight kg | Piece weight kg | Meter weight kg | |||
DN15 | 1/2 | 21.3 | 2.8 | 2.45 | 1.28 | 7.68 | 1.357 |
DN20 | 3/4 | 26.9 | 2.8 | 2.45 | 1.66 | 9.96 | 1.76 |
DN25 | 1 | 33.7 | 3.2 | 2.8 | 2.41 | 14.46 | 2.554 |
DN32 | 1.25 | 42.4 | 3.5 | 3.06 | 3.36 | 20.16 | 3.56 |
DN40 | 1.5 | 48.3 | 3.5 | 3.06 | 3.87 | 23.22 | 4.10 |
DN50 | 2 | 60.3 | 3.8 | 3.325 | 5.29 | 31.74 | 5.607 |
DN65 | 2.5 | 76.1 | 4.0 | 3.5 | 7.11 | 42.66 | 7.536 |
DN80 | 3 | 88.9 | 4.0 | 8.38 | 50.28 | 8.88 | |
DN100 | 4 | 114.3 | 4.0 | 10.88 | 65.28 | 11.53 | |
DN125 | 5 | 140 | 4.5 | 15.04 | 90.24 | 15.942 | |
|
DN150
|
6 | 168.3 | 4.5 |
18.18
|
109.08
|
19.27
|
|
|
DN200
|
8 | 219.1 | 6.0(welded pipe) |
31.53
|
189.18
|
||
|
DN200
|
8 | 219.1 | 6.5(HDG pipe) |
36.12
|
|||
（2）Hot Dip Galvanized Steel Round Tubing Size
Φ：10.3-3620mm
Wall thickness:0.5-60mm
Length:0.5-24M or customized
For more information,please contact our sales manager:sales..........com
4、How to judge the quality of hot-dip galvanized round tubing?
(1) Appearance of galvanized pipe fittings
The surface of high-quality galvanized pipe fittings should have a complete coating, consistent color, uniform transition, and no sags, drips, or excess lumps on the surface. The surface of the pipe fittings shall not have defects such as missed plating or exposed iron.
(2) Galvanized layer thickness
The thickness of the zinc layer on galvanized pipes is an important indicator for judging the quality of galvanizing, usually measured in units μ M represents the weight of the galvanized layer per square meter (g/m2), and the conversion formula is: 1g/m2=0.14 μ M. Due to the different magnetic and polarizability between zinc and steel, the determination of zinc layer thickness can be non-destructive measured using a zinc layer thickness gauge. To determine the weight of the zinc layer, it is necessary to scrape and sample the zinc layer, and measure it using chemical methods such as antimony chloride method.
The customer manager of Yuantai Derun will also remotely connect with customers on-site to measure the thickness of the zinc layer.
(3) Uniformity of zinc coating
The high-quality galvanized layer has a uniform texture and no leakage or damage after plating. The galvanized pipe fittings can be immersed in a certain concentration of copper sulfate solution for a certain number of times and time. If there is no red leaching substance (metal copper) on the surface, it can be considered that the galvanized pipe fittings have no leakage or damage defects after plating.
(4) Adhesion of zinc coating
The adhesion of the galvanized layer is a standard for measuring the firmness of the bonding between the galvanized layer and the steel pipe. After soaking the steel pipe in a zinc bath for a certain period of time, the surface of the steel pipe will react with the galvanized liquid to form a zinc iron mixed layer. A scientifically sophisticated galvanizing process will form a zinc iron mixed layer with sufficient thickness to improve the adhesion of the zinc layer. The adhesion of the galvanized layer can be monitored by lightly tapping with a rubber hammer, preferably to ensure that the coating does not fall off after a certain number of taps.
5.Galvanized Round Tubing Advantages And Features
long service life
Yuantai Derun steel pipe has long service life
The steel pipe surface is smooth
The surface of the steel pipe shall be smooth without burrs
No joint, no cushion bar
There is no joint and backing bar in the finished steel pipe
Source of raw materials
Large factory direct supply
Each steel pipe 100% complies with international standards
Each steel pipe is inspected layer by layer
OEM&ODM&OBM
Yuantai derun accepts OEM,ODM,OBM
6、One Corner of Yuantai Derun Workshop
7.Strict Product inspection
Each steel pipe must pass the inspection layer by layer. Only the products that pass the inspection can leave the factory. Never let an unqualified product flow into the market
8.Certificate
BC1
FACTORY PRODUCTION CONTROL CERTIFICATE,ln compliance with the requirements of BC1:2012 and the Building and Construction Authority, Singapore
EN10210
Manufacture of Hollow Sections :This certificate proves that the performance stability meets the performance of European standards
EN10219
Manufacture of Hollow Sections :This certificate proves that the performance stability meets the performance of European standards
BV
This certficate is issued to attest that Bureau Vveritas Marine & Ofishore has perormed, at the above company's request and in compliance withthe requirements of NR320,a satisfactory assessment of the manudacturing facilities and associated quality procedures related to the ranrge of therecogniition.
EPD
Environmental Product Declaration
PHD
Product Health Declaration
ISO14001（GB/T 24001）
ENVIRONMENTAL MANAGEMENT SYSTEM CERTIFICATE
OHSAS 18001(GB/T28001-2011)
OCCUPATIONAL HEALTH AND SAFETYMANAGEMENT SYSTEM CERTIFICATE
ISO9001(GB/T19001)
The production of rectangular pipe and hot-dip galvanized pipe, the sales and service of metal materials, and the quality management system meet the requirements
GB / t19001-2016 / iso9001:2015
JIS G3466
Jis G 3466 : Carbon steel square and rectangular tubes for general structure meet JIS G3466 standard
9. Value Added Services
The galvanized round pipes produced by Yuantai Derun can also provide you with the following value-added services:
1. Punching holes
2. Cutting
3. Welding
4. Bending
5. Anti corrosion and insulation treatment
6. Pipe end threading
Warmly welcome global steel pipe buyers to contact us. Order or consult.