DX51D+Z Galvanized Steel Round Pipe Square Tube Krobo Steel

DX51D+Z Galvanized Steel Chemical Composition:

Element Composition (%)
Carbon (C) ≤0.18
Silicon (Si) ≤0.50
Manganese (Mn) ≤1.20
Phosphorus (P) ≤0.12
Sulfur (S) ≤0.045
Titanium (Ti) ≤0.30

Product Introduction 

The first letter D represents flat steel for cold forming, the second letter if Indicates that the product is intended for cold forming, flat steel, the substrate status is not specified, the steel grade serial number is 51, pure zinc coating, hot-dip products.


DX51D+Z is one of many materials in galvanized pipes. It can be galvanized with Spangle or without Spangle.The galvanizing of DX51D+Z uses DC01 substrate.



DX51D+Z Galvanized Steel Pipe is used to manufacture various non-safety structural parts, various connectors and various mounting brackets for automobile bending deformation and simple stamping forming.


Galvanized pipes are widely used. In addition to being used as pipeline pipes for general low-pressure fluids such as water, gas, and oil, they are also used as oil well pipes and oil pipelines in the petroleum industry, especially offshore oil fields, and oil heaters and condensation pipes for chemical coking equipment. Pipes for coolers, coal distillation washing oil exchangers, trestle piles, and support pipes for mine tunnels, etc. Widely used in construction, machinery, coal mines, chemicals, electric power, railway vehicles, automobile industry, highways, bridges, containers, sports facilities, agricultural machinery, petroleum machinery, prospecting machinery, greenhouse construction and other manufacturing industries.

Classification By Size:

The length is generally 600mm,1000mm, 1250mm,2200mm, and the thickness is distinguished by cold rolling and hot rolling. Cold rolling mainly has thickness 1.0mm, 1.2mm, 1.5mm, 2.0mm, 2.5mm, 3.0mm. The main thickness of hot rolling is 3.0mm, 4.0mm, 6.0mm, 8.0mm, 10.0mm, and the width is generally 1000mm, 1219mm, 1500mm.Please contact customer service for general specifications.


Hot-dip galvanized pipes are produced by continuous hot-dip galvanizing technology with hot-rolled steel strip or cold-rolled steel strip as the substrate. The hot-dip galvanized pipe is supplied as a rectangular flat plate by cross-cutting; the hot-dip galvanized pipe is supplied in coil form by coiling, and the hot-dip galvanized sheet coil can be divided into hot-rolled galvanized sheet coil and cold-rolled hot-dip galvanized sheet Coils, they are mainly used in construction, home appliances, automobiles, containers, transportation and household business and other fields. Especially steel structure construction, automobile manufacturing, steel silo manufacturing and other industries.


Their main features are: strong corrosion resistance, good appearance quality, benefit from deep processing, economical and practical, etc.

Application range: (1) After annealing, it is processed into ordinary cold rolling; (2) The galvanizing unit with pre-annealing treatment device processes galvanizing; (3) Panels that basically do not need to be processed.

Why Choose Us?

*Top 20 companies in steel industry trade volume.

*Customized processing steel one-stop purchase.

*Exports of steel exceeded tens of billions for 5 consecutive years.

**We have a complete set of testing equipment, such as ut & ET, hydraulic testing equipment, spectrometer, scanning electron microscope, etc, and have passed SGS TUV

Our Quality Assurance Policy has established guidelines for providing products and services that exceed customer expectations. certified company.