Xi'an Dongmeng Group Co., Ltd. is one of the most reliable manufacturers and suppliers of 2 inch galvanized steel pipe in China, also supports customized service. With abundant experience, we warmly welcome you to wholesale cheap products in stock here and get free sample from our factory. For price consultation, contact us.
2 Inch Galvanized Steel Pipe Supplier | ASTM A53 Schedule 40 Hot Dip Galvanized Pipe Manufacturer
2 inch galvanized steel pipe is a zinc-coated carbon steel pipe designed for projects requiring corrosion resistance, mechanical strength and long outdoor service life. With a nominal pipe size of 2 inches and a standard outside diameter of 60.3 mm / 2.375 inches, it is widely used in construction structures, fencing systems, water pipelines, irrigation networks, solar mounting frames and industrial support systems.
Compared with black steel pipe, galvanized pipe provides better protection against rust because the zinc layer acts as a sacrificial coating. For B2B buyers, the key purchase factors are usually standard compliance, zinc coating thickness, wall thickness, end treatment, length tolerance, inspection documents and export packaging.
Xi'an Dongmeng Group Co., Ltd supplies 2 inch galvanized steel pipes according to ASTM A53, ASTM A500, BS1387, EN10219, EN10255 and customer project specifications.
Products Size Chart
|
Main Products |
Size |
Wall Thickness |
|
ERW steel pipe |
1/2" -- 8" |
1.5mm--10.0mm |
|
Hot-dipped galvanized steel pipe |
1/2" -- 8" |
1.5mm--10.0mm |
| Square
Rectangular steel pipe |
20x20--400x400mm,
20x40--400x600mm |
1.3mm--20mm |
| Hot-dip galvanized
square / rectangular steel pipe |
20x20--200x200mm,
20x40--250x150mm |
1.5mm--7.5mm |
|
Oil casing pipe, SSAW steel pipe |
219mm-2020mm |
5.0mm--28mm |
| Steel-plastic complex
steel pipe |
1/2"--12" |
1.5mm--10.0mm |
Products Specification
| Item | Specification |
|---|---|
| Nominal Size | 2 inch / DN50 |
| Outside Diameter | 60.3 mm / 2.375 in |
| Schedule Options | SCH 10, SCH 20, SCH 40, SCH 80 |
| Common SCH 40 Wall | 3.91 mm / 0.154 in |
| Length | 5.8 m, 6 m, 12 m, 20 ft, 21 ft, custom |
| Zinc Coating | 40–120 μm or customized |
| Surface | Hot dip galvanized, pre-galvanized |
| Ends | Plain, threaded, grooved, beveled |
| Thread | NPT, BSPT, BSP, custom |
| MOQ | Usually 2 tons per size or project-based |
| Documents | MTC, invoice, packing list, CO, third-party inspection if required |
Chemical Composition
| Grade | C | Mn | P | S | Application |
|---|---|---|---|---|---|
| Q235 | ≤0.22 | ≤1.40 | ≤0.045 | ≤0.050 | General structure, fencing, construction |
| Q345 / Q355 | ≤0.20 | ≤1.70 | ≤0.035 | ≤0.035 | Higher-strength structural use |
| ASTM A53 Gr.B | ≤0.30 | ≤1.20 | ≤0.05 | ≤0.045 | Pressure pipe, mechanical pipe, galvanized pipe |
| ASTM A500 Gr.B | ≤0.26 | ≤1.35 | ≤0.035 | ≤0.035 | Structural tube and frame applications |
Mechanical Properties
| Standard / Grade | Yield Strength | Tensile Strength | Elongation |
|---|---|---|---|
| Q235 | ≥235 MPa | 370–500 MPa | ≥20% |
| Q345 / Q355 | ≥345 MPa | 470–630 MPa | ≥20% |
| ASTM A53 Gr.B | ≥240 MPa | ≥415 MPa | ≥20% |
| ASTM A500 Gr.B | ≥315 MPa | ≥400 MPa | According to standard |
Physical Properties
| Property | Typical Value |
|---|---|
| Density | 7.85 g/cm³ |
| Melting Point | Approx. 1450°C |
| Zinc Coating Type | Hot dip galvanized / pre-galvanized |
| Coating Function | Sacrificial corrosion protection |
| Magnetic Property | Magnetic |
| Surface Appearance | Silver zinc coating, bright or regular spangle |
Processing Performance Analysis
2 inch galvanized steel pipe offers good cutting, drilling, threading and grooving performance. It can be supplied in fixed lengths or cut-to-size for distributors, contractors and OEM projects. For threaded pipe, both ends can be protected with plastic caps to reduce thread damage during transportation.
Welding Performance Analysis
Galvanized steel pipe can be welded, but zinc fumes must be controlled during welding. For structural welding projects, proper ventilation, local zinc removal near the weld zone and post-weld zinc-rich paint repair are recommended. For projects requiring heavy welding, black pipe plus post-galvanizing may be a better option.
Corrosion Resistance Analysis
The zinc coating protects the steel substrate through barrier protection and sacrificial protection. Hot-dip galvanized pipe is preferred for outdoor, humid, agricultural, coastal and industrial environments. For highly corrosive areas, buyers may request thicker zinc coating, inner coating, epoxy sealing or additional anti-corrosion treatment.
Executive Standards
| Standard | Description |
|---|---|
| ASTM A53 | Welded and seamless steel pipe, black and hot-dipped galvanized |
| ASTM A500 | Cold-formed welded and seamless carbon steel structural tubing |
| BS1387 | Steel tubes for water, gas and general engineering |
| EN10219 | Cold formed welded structural hollow sections |
| EN10255 | Non-alloy steel tubes suitable for welding and threading |
| JIS G3444 / G3466 | Japanese structural steel pipe standards |
| GB/T 3091 | Welded steel pipe for low pressure fluid service |
Our Factory






Product Packaging


Technical Advantages Driving Market Preference
Enhanced Corrosion Protection
The hot-dip galvanization process creates a zinc-iron alloy layer (85-100 µm) that outperforms epoxy coatings in salt-spray tests (ASTM B117), particularly crucial for coastal projects using 2 in. galvanized steel pipe.
Dimensional Flexibility
From 1 2 in x 10 ft galvanized steel pipe for precision equipment to 2 in x 20 ft galvanized steel pipe for warehouse structural frames, standardized lengths reduce on-site fabrication costs by 18-22% (ASCE 2023 report).
Load-Bearing Superiority
The Schedule 40 1-1/2 in. galvanized steel pipe demonstrates 35% higher crush resistance than Schedule 10 equivalents, making it indispensable for underground installations.
Emerging Market Opportunities
Green Construction Boom
LEED-certified projects increasingly specify 2 inch Schedule 40 galvanized steel pipe for recyclable rainwater harvesting systems.
Agricultural Modernization
The 2 in. x 12 ft. galvanized steel pipe sees 40% YOY demand growth in automated irrigation projects across Southeast Asia.
Industrial Automation
Robotic assembly lines require durable frames built with 1-1/2 in. x 10 ft. galvanized steel pipe for EMI shielding and vibration resistance.
Strategic Inventory Considerations for Distributors
Regional Demand Analysis:
Coastal markets prioritize 2 in. galvanized steel pipe with supplemental zinc spray coatings
Earthquake-prone areas stock Schedule 40 1 1 2 galvanized steel pipe for flexible seismic bracing
Logistics Optimization:
Bundle 2 in x 10 ft galvanized steel pipe with compatible fittings to increase average order value
Offer 2 in. x 20 ft. galvanized steel pipe pre-cut services to attract prefab construction firms
Product Testing
Super long anti-rust life
Using hot-dip galvanizing technology, the thickness of the zinc layer is strictly controlled at 80-120μm (far exceeding the national standard of 50μm). It passes the ASTM A123 3000-hour salt spray test and has a service life of more than 30 years in extremely humid, acidic and alkaline environments. Its corrosion resistance is 5-8 times higher than that of ordinary steel pipes.
High strength carbon steel substrate
Selected low-carbon steel with grade Q235B and above, with tensile strength ≥375MPa, matched with Sch40 standard wall thickness (such as 2-inch pipe wall thickness 3.0-4.5mm), the bursting pressure is as high as 6.5MPa, which can meet the needs of high-pressure scenarios such as fire fighting, oil and gas transportation, etc.


Precise size control
Fully automatic high-frequency welding process, the weld strength reaches more than 95% of the parent material, and the outer diameter tolerance is controlled within **±0.5%** (such as DN50 pipe is accurate to 60.3±0.3mm), ensuring seamless compatibility with flanges, elbows and other pipe fittings.
Triple quality verification, traceable
100% quality inspection before leaving the factory: zinc layer adhesion scratch test, water pressure test (2.5MPa pressure for 30 seconds), eddy current flaw detection
Dual certification guarantee: ISO9001 quality management system certification + China Metallurgical Industry Information Standards Institute supervision
Each batch can be traced: laser marking production batch number, support third-party re-inspection
Our customers

Galvanized pipes shipped to UAE
A UAE customer purchased 200 tons of galvanized steel pipes for the Abu Dhabi AI Dhafra photovoltaic power station project. The product has a zinc layer of 100μm and adds plastic sheaths at the pipe ends, reducing the overall cost of the pipeline by 40%.
UAE core cooperation plan (200 tons of galvanized steel pipe order)
Specification selection:
60% 2 inch schedule 40 galvanized steel pipe (6 meters fixed length, zinc layer ≥ 85μm)
30% 1-1/2 inch schedule 40 (6 meters/random length, special anti-sand coating for desert projects)
10% 2.5 inch galvanized pipe (wall thickness 4.0mm, port machinery reinforcement scenario)
Certification adaptation:
Saudi Arabia SASO certification + UAE ESMA certification (including heavy metal migration test report)
Islamic halal production system declaration (non-pork grease lubricant certificate)
Azerbaijan 500 tons galvanized steel pipe project
The Caspian Sea oilfield associated water treatment system upgrade project led by the Azerbaijan State Oil Company (SOCAR) requires the purchase of 500 tons of galvanized steel pipes for the construction of corrosive wastewater transportation pipelines in oil and gas fields.
Base material API 5L Grade B seamless steel pipe Sulfide stress corrosion cracking (SSCC) resistance increased by 40%
Galvanizing process Hot-dip galvanizing + inner wall epoxy coating (double protection) Zinc layer thickness ≥ 85μm (GOST 9.307-89 certification)
Pipe end treatment 30° groove prefabrication + polyethylene sheath Adapt to field welding environment and reduce on-site processing time
Connection method API 5B standard thread (can be equipped with API 16C flange) 100% compatible with existing oilfield equipment


Solution for Dutch Client's 200-ton Galvanized Steel Pipe Project
Project Background
The government-led North Sea Offshore Wind Farm Base supporting water supply pipeline network project requires urgent procurement of 200 tons of 2-inch Schedule 40 galvanized steel pipes (compliant with EN 10240 standard) to connect seawater desalination equipment with the land-based pipeline network.
Product Specifications
Dimensions:
2-inch Schedule 40 Galvanized Steel Pipe
Outer Diameter: 60.3 mm
Wall Thickness: 3.2 mm
Corrosion Protection:
Zinc Coating Thickness: ≥90 μm (tested per ISO 1461 salt spray test)
Pipe Ends Pre-coated with Epoxy Sealant (to prevent salt fog corrosion during maritime transport)
Algeria 200 tons galvanized steel pipe solution
The Algerian National Energy Company (Sonatrach) led the Sahara oil and gas field water supply system renovation project, which required the purchase of 200 tons of galvanized steel pipes for underground water supply networks in high-temperature and high-salt-alkali environments
Base material S235JR carbon steel (EN 10025 standard) Yield strength ≥ 235MPa, adapted to underground settlement stress
Galvanizing process Hot-dip galvanizing + inner wall polyurethane coating (double anti-corrosion) Zinc layer thickness ≥ 75μm (NF A49 salt spray 2000 hours certification)
Pipe end treatment 45° groove prefabrication + polyethylene sheath Adapt to desert welding environment and reduce on-site processing time
Connection method EN 10255 standard thread (optional flange adapter) Compatible with European/North African general pipeline system


Zimbabwe's various steel product solutions
Zimbabwe's infrastructure is very hot. The customer is a local steel dealer and an old customer of ours. The purchasing requirements are diverse, including round tubes, square tubes, hot dip, pre-coating, angle steel, channel steel, and H-shaped steel.
Turkish customer confirms 500 tons galvanized steel pipe
Turkish customer confirms 500 tons galvanized steel pipe order
The Turkish customer is a steel distributor with many customers in Europe. This time he came to China specifically to help the end customer check the product quality and spoke highly of our products.


Burkina Faso
The customer is a large local steel distributor. They purchased steel pipes, steel bars and corrugated sheets from us. They sell these products very well locally and update their orders every three months on average.
Vietnamese customers visited the factory and confirmed an order of 500 tons
After visiting the factory, the Vietnamese customer confirmed the order of 500 tons. The Vietnamese customer is a very powerful supplier in Vietnam. The end customers are high-quality customers in North America such as the United States and Canada. They have high requirements for product quality and need to meet ASTM standards. We gave a very favorable price.

Send us your size, wall thickness, standard, quantity and destination port to get a fast quotation.
Our address
Room 4107, Runfeng Building, Sanqiao New Street, Weiyang District, Xi'an City, Shaanxi Province
Phone Number
+86 15769214734

Inspection & Quality Assurance
Each order can be inspected according to project requirements:
| Inspection Item | Method |
|---|---|
| Outside Diameter & Wall Thickness | Caliper / micrometer inspection |
| Zinc Coating Thickness | Magnetic thickness gauge |
| Surface Quality | Visual inspection |
| Weld Quality | Eddy current / hydrostatic test if required |
| Thread Quality | Thread gauge inspection |
| Mechanical Properties | Tensile test |
| Chemical Composition | Spectrometer analysis |
| Documents | MTC / EN10204 3.1 / third-party inspection |
FAQ
Q1: What is the outside diameter of 2 inch galvanized steel pipe?
A: The standard outside diameter is 60.3 mm / 2.375 inches.
Q2: What is the wall thickness of 2 inch Schedule 40 galvanized pipe?
A: The common SCH 40 wall thickness is about 3.91 mm / 0.154 inches.
Q3: Can you supply threaded 2 inch galvanized pipe?
A: Yes. NPT, BSPT, BSP and customized threads are available.
Q4: What standards can you supply?
A: ASTM A53, ASTM A500, BS1387, EN10219, EN10255, JIS and GB standards are available.
Q5: Can the pipe be cut to 6 meters or 20 ft?
A: Yes. Standard and custom lengths are available.
Q6: Is hot-dip galvanized pipe better than pre-galvanized pipe?
A: Hot-dip galvanized pipe usually provides thicker zinc coating and better outdoor corrosion resistance.
Q7: Can you provide MTC?
A: Yes. Material Test Certificate and third-party inspection can be provided.
Q8: What industries commonly buy 2 inch galvanized steel pipe?
A: Construction, fencing, plumbing, agriculture, solar mounting, infrastructure and industrial fabrication.
Hot Tags: 2 inch galvanized steel pipe, China 2 inch galvanized steel pipe manufacturers, suppliers, factory, 40x40 Steel Box Section, Schedule 20 Galvanized Steel Pipe, Galvanized Steel Pipe, 1 Inch Galvanized Steel Pipe Tube, Schedule 40 Hot Dip Galvanized Pipe, Rhs Sections


