The galvanized gas pipe is a steel pipe with a protective zinc coating, specifically intended for use in fuel gas piping systems(e.g., natural gas or propane).
The galvanization (zinc coating) is applied to prevent the steel from rusting, which is critical for both the longevity of the galvanized pipe and safety. Its threaded design allows for secure and straightforward connections.
EN 10255 has two types: Heavy Type and Medium Type.
O.D: 10.6-166.5mm
W.T: 2.0-5.4mm
L: 5800mm/6000mm
Ends Process: Plain, Threaded, Threaded & Socketed.
EN10255 Galvanized Gas Steel Pipe And Tubes Chemical composition and mechanical properties:
| Steel Grade | Chemical composition % | Mechanical Properties | ||||||
| Yield strength | Tensile strength | Elongation | ||||||
| Steel Name | Steel Number | C max | Mn max | P max | S max | ReH min. (MPa) | Rm (MPa) | A min. % |
| S195T | 1.0026 | 0.20 | 1.40 | 0.035 | 0.030 | 195 | 320 to 520 | 20 |
EN10255 Galvanized Gas Steel Pipe And Tubes Heavy and Medium Series:
| Specified outside diametera | Thread Sizea | Outside diameter | H | M | |||||
| Heavy series | Medium series | ||||||||
| D (mm) | R | max. (mm) | min. (mm) | Wall thickness | Mass per unit length of bare tube | Wall thickness | Mass per unit length of bare tube | ||
| T (mm) | Plain end (kg/m) | Socketed (kg/m) | T (mm) | Plain end (kg/m) | Threaded and socketed (kg/m) | ||||
| 10.2 | 1/8 | 10.6 | 9.8 | 2.6 | 0.487 | 0.490 | 2.0 | 0.404 | 0.407 |
| 13.5 | 1/4 | 14.0 | 13.2 | 2.9 | 0.765 | 0.769 | 2.3 | 0.641 | 0.645 |
| 17.2 | 3/8 | 17.5 | 16.7 | 2.9 | 1.02 | 1.03 | 2.3 | 0.839 | 0.845 |
| 21.3 | 1/2 | 21.8 | 21.0 | 3.2 | 1.44 | 1.45 | 2.6 | 1.21 | 1.22 |
| 26.9 | 3/4 | 27.3 | 26.5 | 3.2 | 1.87 | 1.88 | 2.6 | 1.56 | 1.57 |
| 33.7 | 1 | 34.2 | 33.3 | 4.0 | 2.93 | 2.95 | 3.2 | 2.41 | 2.43 |
| 42.4 | 1 1/4 | 42.9 | 42.0 | 4.0 | 3.79 | 3.82 | 3.2 | 3.10 | 3.13 |
| 48.3 | 1 1/2 | 48.8 | 47.9 | 4.0 | 4.37 | 4.41 | 3.2 | 3.56 | 3.60 |
| 60.3 | 2 | 60.8 | 59.7 | 4.5 | 6.19 | 6.26 | 3.6 | 5.03 | 5.10 |
| 76.1 | 2 1/2 | 76.6 | 75.3 | 4.5 | 7.93 | 8.05 | 3.6 | 6.42 | 6.54 |
| 88.9 | 3 | 89.5 | 88.0 | 5.0 | 10.3 | 10.5 | 4.0 | 8.36 | 8.53 |
| 114.3 | 4 | 115.0 | 113.1 | 5.4 | 14.5 | 14.8 | 4.5 | 12.2 | 12.5 |
| 139.7 | 5 | 140.8 | 138.5 | 5.4 | 17.9 | 18.4 | 5.0 | 16.6 | 17.1 |
| 165.1 | 6 | 166.5 | 163.9 | 5.4 | 21.3 | 21.9 | 5.0 | 19.8 | 20.4 |
| a For relationship between specified outside diameter (D), thread size (R) and nominal diameter (DN), see Annex A. T = specified wall thickness. | |||||||||
EN 10255 Hot Dipped Galvanized Steel Tube are only permitted to be produced using the "welding process." The core processes are divided into two categories, suited to different sizes and precisions:
Suitable for pipes with an outer diameter of ≤ 219mm. High-frequency current is used to heat the steel pipe edge and then squeeze and weld. The weld strength is ≥ 90% of the base material strength. This process offers high production efficiency and manageable costs. It is commonly used in municipal water/gas transportation.
Suitable for large-diameter pipes with an outer diameter greater than 219mm. Submerged Arc Welding (SAW) offers deep weld penetration and consistent quality, while Plasma Arc Welding (PAW) offers high precision and is suitable for industrial low-pressure fluid transportation (such as cooling water pipes).
● Appearance Inspection: No cracks, folds, scars, or delamination on the surface. Rust depth ≤ 10% of the wall thickness. Weld protrusion height ≤ 2mm (ERW pipe).
● Dimensional Inspection: Measure the outer diameter, wall thickness, and ovality of each pipe to ensure compliance with EN 10255 tolerances.
● Mechanical Testing: Three specimens are sampled from each batch and subjected to tensile and bend tests (bend angle 180°, bend center diameter = 3 x wall thickness). Acceptance is determined by the absence of cracks.
● Hydraulic Pressure Testing: All pipes undergo a hydrostatic test (test pressure = 2 x design pressure, maintained for 30 seconds with no leakage). The design pressure is calculated based on the wall thickness and brand.
● Weld Inspection: ERW pipes undergo eddy current testing (100% weld inspection), while arc-welded pipes undergo X-ray testing (sampling inspection ratio ≥ 10%) to detect internal weld defects.
● For low-pressure transmission (≤1.6 MPa, such as water/gas), P195TR1 (ERW process) is preferred for the best cost-effectiveness. For cold bending (e.g., on-site bending installation), choose P195TR2.
● For low-medium pressure (1.6-2.5 MPa, such as low-pressure steam): Choose P235TR1 (ERW for outer diameters ≤219 mm, SAW for diameters >219 mm). For circulating fluids (e.g., cooling water), choose P235TR2 for improved fatigue resistance.
● For corrosive environments (e.g., outdoor areas, humid industrial areas): Hot-dip galvanized EN 10255 steel pipe (galvanized layer thickness ≥85 μm) or anti-corrosion coating is recommended for extended service life.
● For large diameters (>273 mm), P235TR1/TR2 with submerged arc welding (SAW) is required to ensure weld strength and pipe stability.
Our galvanized gas pipe undergoes a rigorous hot-dip galvanizing process that creates a metallurgically-bonded zinc coating, providing exceptional protection against rust and corrosion in harsh environments.
The galvanized gas pipe features a uniform zinc coating that withstands physical abrasion and environmental degradation, ensuring reliable performance and extended longevity with minimal maintenance.
Manufactured according to EN10255 and other recognized standards, every galvanized gas pipe guarantees consistent quality, safety and performance reliability.
The combination of durability, low maintenance requirements and long service life makes this galvanized gas pipe an economically advantageous choice for gas projects.
1. Project-Ready Hot Dipped Galvanized Steel Tube with Full Customization
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2. Certified Quality Assurance
Every Hot Dipped Galvanized Steel Tube undergoes rigorous testing and quality control
Provide complete EN 10204 3.1 Mill Test Certificate with every shipment
Arrange third-party witnessed 3.2 MTCs for critical applications
All galvanized gas pipes strictly comply with international standards
Comprehensive after-sales support ensures complete project satisfaction
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Technical team provides professional guidance on galvanized gas pipe applications
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Maintain consistent communication throughout project execution
Deliver technical documentation and support services
Our commitment to quality customization and certified excellence makes us your trusted partner for galvanized gas pipe requirements across various industrial applications.
Our EN10255 Galvanized Gas Steel Pipe And Tubes deliver safe and dependable performance across diverse applications. They are ideally suited for residential and commercial buildings as main and service lines, ensuring household safety.
In industrial settings, EN10255 Galvanized Gas Steel Pipe And Tubes reliably supply gas to equipment and machinery.
For municipal gas networks, EN10255 Galvanized Gas Steel Pipe And Tubes serve as robust underground distribution mains (with additional corrosion protection as required).
Additionally, galvanized gas pipes are perfectly compatible with both LPG and PNG systems. Engineered for durability and leak-proof integrity, they are the universal choice for secure gas conveyance.
Contact the Galvanized Gas Pipe Experts at Hainan Yuan Steel Pipe
Hainan Yuan Steel Pipe is committed to providing our customers with the best selection of galvanized gas pipes. Our knowledgeable staff are dedicated to helping you find the galvanized gas pipe product that fits your needs.
CONTACT US to discuss what EN10255 Galvanized Gas Steel Pipe And Tubes or other steel pipe options are best for your next project or REQUEST A QUOTE for pricing today.
