Xi'an Dongmeng Group Co., Ltd. is one of the most reliable manufacturers and suppliers of ASTM A53 Galvanized Steel Pipe Supplier | Grade B Hot Dip GI 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.
ASTM A53 Galvanized Steel Pipe Supplier | Grade B Hot Dip GI Pipe
ASTM A53 galvanized steel pipe is a carbon steel pipe manufactured according to ASTM A53 / ASME SA53 and protected with a hot-dip zinc coating for improved corrosion resistance. It is widely used for water lines, gas lines, air lines, fire protection systems, fence posts, handrails, scaffolding, mechanical structures and general industrial piping systems.
Xi'an Dongmeng Group Co., Ltd. supplies ASTM A53 galvanized steel pipes in Grade A and Grade B, including Type E ERW pipe and Type S seamless pipe. We provide standard lengths, custom cutting, threaded ends, grooved ends, coupled pipes, bundle packing and complete inspection documents for global B2B buyers.
Why ASTM A53 Galvanized Steel Pipe Is Preferred by Buyers
ASTM A53 galvanized pipe is widely selected because it combines standard compliance, stable mechanical performance and reliable zinc coating protection. For importers, contractors and engineering buyers, the key purchase factors are usually pipe grade, wall thickness, zinc coating quality, end treatment, test certificate, packing method and delivery time.
Our ASTM A53 GI pipes are suitable for projects requiring corrosion protection, easy installation and stable dimensional control. Each order can be supplied with material test certificate, zinc coating inspection, dimension inspection and export seaworthy packing.
Available ASTM A53 Pipe Types
ASTM A53 Type E ERW Galvanized Pipe
Type E pipe is produced by electric resistance welding. It is commonly used for general pressure service, water lines, air lines, fire protection systems, fence posts and structural applications. Grade B Type E is one of the most commonly requested options for export orders.
ASTM A53 Type S Seamless Galvanized Pipe
Type S pipe is seamless and suitable for applications where higher pressure performance, better uniformity and no welded seam are required. It is often selected for more demanding piping systems and industrial projects.
ASTM A53 Type F Galvanized Pipe
Type F is furnace-butt-welded pipe. It is generally used for ordinary service applications where project specifications allow this type.
Grade A vs Grade B Selection Guide
ASTM A53 Grade A is suitable for general applications where moderate strength and good forming performance are required.
ASTM A53 Grade B provides higher minimum tensile and yield strength than Grade A, making it the preferred choice for many pressure, mechanical and structural projects. For most export inquiries, Grade B is usually recommended unless the project drawing or specification requires Grade A.
Product Specification Range
| Item | Available Options |
|---|---|
| Product | ASTM A53 Galvanized Steel Pipe |
| Standard | ASTM A53 / ASME SA53 |
| Grade | Grade A / Grade B |
| Type | Type E ERW / Type S Seamless / Type F |
| Size | NPS 1/8"–26" / DN6–DN650 |
| OD Range | According to ASME B36.10 / project requirement |
| Wall Thickness | SCH 10 / SCH 20 / SCH 40 / SCH 80 / XS / custom thickness |
| Length | 5.8m / 6m / 11.8m / 12m / custom cut length |
| Surface | Hot-dip galvanized / zinc coated |
| Ends | Plain end / threaded end / coupled / grooved / beveled |
| Inspection | Dimension, wall thickness, zinc coating, visual, hydrostatic, NDT optional |
| Certificate | MTC 3.1 / CO / Form E / SGS / BV / TUV optional |
| Packing | Bundles, steel strips, waterproof wrapping, plastic caps, shipping marks |
Zinc Coating and Galvanizing Quality
The zinc coating is one of the most important quality points for galvanized steel pipe buyers. A good galvanized pipe should have a uniform zinc layer, clean surface, stable adhesion and no serious uncoated areas, blisters, flux deposits or heavy dross inclusions.
We can supply ASTM A53 galvanized pipe with zinc coating inspection and customized coating requirements according to project needs. For projects requiring stricter coating control, ASTM A123 galvanizing requirements can also be considered.
Mechanical Properties
ASTM A53 Grade B is commonly selected because it offers higher strength than Grade A. Typical ASTM A53 mechanical control includes tensile strength, yield strength and elongation verification. Hydrostatic testing or nondestructive electric testing can be supplied according to pipe type, size and order requirement.
| Grade | Tensile Strength Min. | Yield Strength Min. |
|---|---|---|
| Grade A | 48,000 psi / 330 MPa | 30,000 psi / 205 MPa |
| Grade B | 60,000 psi / 415 MPa | 35,000 psi / 240 MPa |
Common Applications
ASTM A53 galvanized steel pipe is widely used in:
Water supply pipelines
Gas and air lines
Fire protection piping systems
Fence posts and guardrails
Handrails and railing systems
Scaffolding and construction support
Greenhouse frames and agricultural structures
Mechanical structures and equipment frames
Outdoor steel structures
General industrial fluid transfer
ASTM A53 Galvanized Pipe End Options
Different projects require different pipe end treatments. We can supply:
Plain end pipe for welding or fabrication
Threaded and coupled pipe for easy installation
Grooved end pipe for fire protection and mechanical connection systems
Beveled end pipe for welding projects
Custom cut-to-length pipe for fabrication and container loading optimization
Galvanizing Thickness Engineering Meaning
The zinc coating thickness directly determines corrosion resistance, service life, and environmental durability.
Typical Coating Thickness Range
40 – 120 μm depending on process
Higher thickness → longer atmospheric resistance
Industrial coating may exceed 600 g/m²
Engineering Implications
| Coating Level | Service Life (Atmospheric) | Application |
|---|---|---|
| Light galvanizing | 5–10 years | Indoor mechanical use |
| Standard galvanizing | 15–25 years | Construction piping |
| Heavy galvanizing | 30–50 years | Marine / infrastructure |
Zinc acts as:
Barrier protection
Cathodic protection
Self-healing layer
This makes ASTM A53 galvanized pipe highly suitable for aggressive environments.
Pressure Calculation Guide
ASTM A53 pipe pressure capacity depends on:
Wall thickness (Schedule)
Yield strength
Outside diameter
Operating temperature
Engineering Pressure Formula (Simplified)
P = (2 × S × t) / D
Where:
P = allowable pressure
S = allowable stress
t = wall thickness
D = outside diameter
In practical engineering:
Schedule 40 pipes are used in low pressure systems
Schedule 80 for higher pressure transmission
Galvanizing does not significantly change pressure rating
ASTM vs EN vs API Comparison
| Standard | Region | Main Application | Strength Level |
|---|---|---|---|
| ASTM A53 | USA | Structural & pressure | Medium |
| EN 10255 | Europe | Water & gas transport | Medium |
| API 5L | Oil & gas | Pipeline transmission | High |
ASTM A53:
More flexible general-purpose standard
Lower cost compared to API pipes
Easier global availability
API 5L:
Higher toughness
Strict pipeline certification
Used for energy transmission
EN standards:
Focused on building services
Common in EU infrastructure
ASTM A53 galvanized steel pipe Real Project Case
Case: Municipal Water Distribution System – Southeast Asia
Project Scope:
2,800 tons ASTM A53 Grade B galvanized pipe
DN50–DN300 range
Hot-dip galvanizing coating 85 μm
Engineering Outcome:
20-year corrosion resistance performance
Reduced maintenance cost by 35%
Installation time reduced due to welding compatibility
This demonstrates the suitability of galvanized A53 pipe in large infrastructure projects.
Cost Analysis of ASTM A53 galvanized steel pipe
Cost drivers include:
Raw Material Factors
Steel billet price fluctuations
Zinc price volatility
Energy cost
Processing Cost Factors
Galvanizing bath technology
Surface preparation
Quality inspection level
Global Market Price Position
ASTM A53 galvanized pipe typically:
15–30% cheaper than stainless steel pipe
10–20% cheaper than API pipeline grade
Thus widely used in:
Construction
Infrastructure
Mechanical engineering
Supplier Selection Guide of ASTM A53 galvanized steel pipe
Industrial buyers should evaluate:
Technical Capability
Galvanizing line capacity
Pipe forming precision
Testing laboratory level
Quality Certifications
ISO 9001
ASTM compliance certification
Third-party inspection availability
Export Experience
Packaging standards
Logistics control
Documentation accuracy
Reliable suppliers reduce project risk and lifecycle cost.
Inspection Standard of ASTM A53 galvanized steel pipe
ASTM A53 galvanized pipes must undergo:
Dimensional Inspection
OD tolerance
Wall thickness control
Straightness
Mechanical Testing
Tensile strength
Yield strength
Flattening test
Coating Inspection
Zinc thickness measurement
Adhesion testing
Surface defect evaluation
NDT (Optional)
Ultrasonic testing
Eddy current testing
Inspection ensures compliance with international engineering requirements.
ASTM A53 galvanized steel pipe
ASTM A53 galvanized steel pipe
Xi'an Dongmeng Group Co., Ltd.
ASTM A53 Galvanized Steel Pipe is a hot-dip zinc-coated carbon steel pipe manufactured in accordance with ASTM A53 / ASME SA53 standards. It is designed for mechanical, pressure, and structural applications, offering outstanding corrosion resistance, durability, and long service life in both indoor and outdoor environments. Our factory produces A53 galvanized steel pipes in a wide range of sizes, schedules, and grades (Type E – Electric Resistance Welded, Type S – Seamless, and Type F – Furnace Welded). With advanced galvanizing technology and strict dimensional control, we deliver pipes with a smooth surface finish, precise tolerances, and reliable mechanical strength. These pipes are ideal for construction, plumbing, oil & gas, fire protection, and power generation projects worldwide.
Main Keywords: ASTM A53 Galvanized Steel Pipe, Hot Dip Galvanized Steel Pipe, ASTM A53 Carbon Steel Pipe, Galvanized Steel Tube Supplier, Galvanized Pipe Manufacturer China,
1. Chemical composition
The chemical composition of ASTM A53 galvanized steel pipe is one of the key factors to ensure its quality and performance. Its chemical composition mainly includes carbon (C), manganese (Mn), phosphorus (P), sulfur (S), copper (Cu), nickel (Ni), chromium (Cr), molybdenum (Mo) and vanadium (V), and the specific contents are as follows:Carbon (C): The content does not exceed 0.30%. Carbon is one of the main components of steel, and its content affects the strength and hardness of the steel pipe.
Manganese (Mn): The content does not exceed 1.20%. Manganese can improve the strength and toughness of the steel pipe.
Phosphorus (P) and sulfur (S): The content does not exceed 0.050% and 0.045% respectively. Phosphorus and sulfur are harmful elements in steel, and their content needs to be strictly controlled to avoid negative effects on the performance of the steel pipe.
Copper (Cu), nickel (Ni), chromium (Cr) and molybdenum (Mo): The content does not exceed 0.40%. These elements can improve the corrosion resistance, oxidation resistance and high temperature strength of the steel pipe.
Vanadium (V): The content does not exceed 0.08%. Vanadium can improve the strength and toughness of steel pipes and improve their comprehensive mechanical properties.
In addition, the ASTM A53 standard also stipulates that the total content of Cu+Ni+Cr+Mo does not exceed 1.00%.
2. Mechanical properties
The mechanical properties of ASTM A53 galvanized steel pipes are one of the important indicators to measure their quality and performance. Mainly including parameters such as tensile strength (Rm), yield strength (Rp0.2) and elongation:
Tensile strength (Rm): refers to the ratio of the maximum force that the steel pipe withstands in the tensile test to its original cross-sectional area. The ASTM A53 standard stipulates that its value is not less than 415MPa (A53-B grade).
Yield strength (Rp0.2): refers to the stress value when the steel pipe yields in the tensile test. The ASTM A53 standard stipulates that its value is not less than 240MPa (A53-B grade).
Elongation: refers to the ratio of the elongation of the steel pipe after the specimen breaks in the tensile test to the original length, which reflects the plastic deformation capacity of the steel pipe.
3. Pressure bearing capacity
The pressure bearing capacity of ASTM A53 galvanized steel pipe is one of the performances that need to be focused on in practical applications. The pressure bearing capacity of this product depends on factors such as its wall thickness, material and manufacturing process. Under the conditions specified in the standard, ASTM A53 galvanized steel pipe can withstand a certain internal and external pressure, and the specific value needs to be determined according to the specifications and uses of the product.
In addition, the manufacturing process of ASTM A53 galvanized steel pipe (such as hot rolling, cold drawing, etc.) will also affect its pressure bearing capacity. For example, the cold drawing process can obtain higher quality products, but the processing process is relatively cumbersome. Therefore, when choosing ASTM A53 galvanized steel pipe, it is necessary to select the appropriate manufacturing process and specifications according to the specific use environment and requirements.
ASTM A53 Galvanized Steel Pipe – International Standard Size Chart
| Nominal Pipe Size (NPS) | Outside Diameter (mm) | Wall Thickness (mm) | Schedule 40 (mm) | Schedule 80 (mm) | Approx. Weight (kg/m) | Length (m) |
|---|---|---|---|---|---|---|
| 1/2" | 21.3 | 2.77 | 2.77 | 3.73 | 1.27 | 6 / 12 |
| 3/4" | 26.7 | 2.87 | 2.87 | 3.91 | 1.68 | 6 / 12 |
| 1" | 33.4 | 3.38 | 3.38 | 4.55 | 2.25 | 6 / 12 |
| 1-1/4" | 42.2 | 3.56 | 3.56 | 4.85 | 3.05 | 6 / 12 |
| 1-1/2" | 48.3 | 3.68 | 3.68 | 5.08 | 3.63 | 6 / 12 |
| 2" | 60.3 | 3.91 | 3.91 | 5.54 | 5.44 | 6 / 12 |
| 2-1/2" | 73.0 | 5.16 | 5.16 | 7.01 | 8.63 | 6 / 12 |
| 3" | 88.9 | 5.49 | 5.49 | 7.62 | 11.29 | 6 / 12 |
| 3-1/2" | 101.6 | 5.74 | 5.74 | 8.08 | 13.53 | 6 / 12 |
| 4" | 114.3 | 6.02 | 6.02 | 8.56 | 16.07 | 6 / 12 |
| 5" | 141.3 | 6.55 | 6.55 | 9.53 | 21.77 | 6 / 12 |
| 6" | 168.3 | 7.11 | 7.11 | 10.97 | 28.26 | 6 / 12 |
| 8" | 219.1 | 8.18 | 8.18 | 12.70 | 41.68 | 6 / 12 |
| 10" | 273.1 | 9.27 | 9.27 | 12.70 | 53.52 | 6 / 12 |
| 12" | 323.9 | 9.53 | 9.53 | 12.70 | 63.88 | 6 / 12 |
| 14" | 355.6 | 9.53 | 9.53 | 12.70 | 72.88 | 6 / 12 |
| 16" | 406.4 | 9.53 | 9.53 | 12.70 | 83.45 | 6 / 12 |
| 18" | 457.0 | 9.53 | 9.53 | 12.70 | 93.21 | 6 / 12 |
| 20" | 508.0 | 9.53 | 9.53 | 12.70 | 102.35 | 6 / 12 |
| 24" | 610.0 | 9.53 | 9.53 | 12.70 | 121.68 | 6 / 12 |
Products Certifications
Certifications
Xi'an Dongmeng Group Co., Ltd.
Xi'an Dongmeng Group Co., Ltd.
Xi'an Dongmeng Group Co., Ltd.
Xi'an Dongmeng Group Co., Ltd.
Xi'an Dongmeng Group Co., Ltd.
Xi'an Dongmeng Group Co., Ltd.
Xi'an Dongmeng Group Co., Ltd.
Features & Benefits
Xi'an Dongmeng Group Co., Ltd.
01
Excellent Corrosion Resistance - Hot-dip galvanizing forms a strong zinc coating for superior rust protection.
02
High Strength & Durability - Manufactured from quality carbon steel with consistent wall thickness.
03
Complies with International Standards - ASTM, ASME, API, and ISO certified.
customization
Xi'an Dongmeng Group Co., Ltd.
Size customization
Length customization: Customers can specify the length of the galvanized steel pipe according to specific usage requirements. Whether it is standard length or non-standard length, it can be achieved through cutting and other processes.
Diameter and wall thickness customization: The diameter and wall thickness of the galvanized steel pipe can also be customized according to the actual needs of the customer. Different diameters and wall thicknesses are suitable for different application scenarios, such as conveying fluids, structural support, etc.
Shape customization
Bending processing: Through equipment such as pipe bending machines, galvanized steel pipes can be processed into the required bending shapes, such as arcs, spirals, etc., to meet the needs of specific application scenarios.
Special-shaped pipe customization: In addition to conventional round galvanized steel pipes, various special-shaped pipes such as square, rectangular, oval, etc. can also be customized according to customer requirements.
Surface treatment customization
Galvanized layer thickness customization: The thickness of the galvanized layer can be customized according to the customer's anti-corrosion needs. A thicker galvanized layer can provide better anti-corrosion performance, but it will also increase costs.
Color customization: Although the galvanized steel pipe itself is silvery white, customers can change its color through subsequent treatments (such as spraying) to meet specific aesthetic or functional needs.
Customized processing methods
Cutting and drilling: According to the specific needs of customers, precise cutting and drilling operations can be performed on galvanized steel pipes to install wires, pipe fittings, etc.
Welding and connection: Welding services are provided to connect galvanized steel pipes with other pipes or components to form a complete pipeline system.
Material and alloy element customization
Material selection: Customers can choose galvanized steel pipes of different materials, such as low carbon steel, alloy steel, etc., according to the needs of specific application scenarios. Different materials have different mechanical properties and corrosion resistance, and are suitable for different environments and conditions.
Addition of alloy elements: During the production process of steel pipes, specific alloy elements can be added according to customer requirements to improve certain properties of steel pipes, such as strength, toughness, corrosion resistance, etc.
Anti-corrosion and coating customization
Anti-corrosion treatment: In addition to galvanizing, other anti-corrosion treatment services can be provided according to customer requirements, such as sandblasting and rust removal, anti-corrosion paint coating, etc. These treatments can further enhance the anti-corrosion performance of steel pipes and extend their service life.
Coating customization: Specific types of coatings, such as epoxy resin, polyethylene, etc., are applied to the surface of galvanized steel pipes to meet specific functional requirements, such as UV protection, anti-aging, fire protection, etc.
Special marking and logo: According to customer requirements, special markings or logos are added to galvanized steel pipes for identification and distinction in subsequent use.
Performance testing: According to customer requirements, special performance tests are performed on custom-made galvanized steel pipes, such as pressure testing, impact testing, corrosion testing, etc., to ensure that product quality meets relevant standards and customer requirements.
Certification services: Provide relevant certification services, such as ISO certification, CE certification, etc., to meet customers' compliance requirements in the international market. These certifications can prove that the quality and performance of galvanized steel pipes meet international standards and improve the market competitiveness of products.
Our Cases
Our Cases
galvanized steel pipe
Xi'an Dongmeng Group Co., Ltd.
galvanized steel pipe
Xi'an Dongmeng Group Co., Ltd.
galvanized steel pipe
Xi'an Dongmeng Group Co., Ltd.
galvanized steel pipe
Xi'an Dongmeng Group Co., Ltd.
galvanized steel pipe
Xi'an Dongmeng Group Co., Ltd.
galvanized steel pipe
Xi'an Dongmeng Group Co., Ltd.
galvanized steel pipe
Xi'an Dongmeng Group Co., Ltd.
galvanized steel pipe
Xi'an Dongmeng Group Co., Ltd.
Inspection and Quality Control
For B2B buyers, inspection is not only about product quality but also about reducing project risk. Our ASTM A53 galvanized steel pipe inspection can include:
Raw material inspection
Chemical composition verification
Outside diameter and wall thickness inspection
Length and straightness inspection
Thread inspection
Zinc coating thickness / coating weight inspection
Surface and visual inspection
Hydrostatic test
Nondestructive testing when required
Packing and container loading inspection
Packaging and Shipping
ASTM A53 galvanized pipes are packed in export seaworthy bundles. Standard packing includes steel strip bundling, waterproof wrapping, plastic caps, bundle labels and shipping marks. For container shipment, we can optimize pipe length and bundle size to improve loading efficiency and reduce transportation damage.
Packing options include:
Hexagonal or round bundles
Steel strip binding
Waterproof plastic wrapping
Plastic caps for pipe ends
Thread protectors for threaded pipe
Bundle tags and shipping marks
Wooden support or palletized packing upon request
Container loading photos available before shipment
Why Choose Xi'an Dongmeng Group Co., Ltd.
Xi'an Dongmeng Group Co., Ltd. supplies galvanized steel pipes for global distributors, contractors, engineering companies and industrial buyers. We focus on stable quality, accurate specifications, professional documentation and reliable export service.
Our advantages:
ASTM A53 Grade A / Grade B supply
ERW and seamless pipe options
Hot-dip galvanized surface available
SCH 40, SCH 80 and custom wall thickness
Threading, grooving and cutting service
MTC 3.1 and third-party inspection support
Export seaworthy packing
Fast response for project quotations
Global shipment experience
How to Get an Accurate Quotation
To provide a fast and accurate quotation, please send us:
Standard: ASTM A53 / ASME SA53
Type: ERW / seamless
Grade: Grade A or Grade B
Size: NPS / OD
Wall thickness: schedule or mm
Length: 6m / 12m / custom
Surface: hot-dip galvanized
End type: plain / threaded / grooved / beveled
Quantity: tons / pieces / meters
Destination port
Required certificate or inspection
Looking for a reliable ASTM A53 Galvanized Steel Pipe supplier from China?
Contact us today for factory-direct prices, third-party inspection, and customized solutions.
Our address
Room 4107, Runfeng Building, Sanqiao New Street, Weiyang District, Xi'an City, Shaanxi Province
Phone Number
+86 15769214734
FAQ (Frequently Asked Questions)
Q1: What is ASTM A53 galvanized steel pipe?
ASTM A53 galvanized steel pipe is a welded or seamless carbon steel pipe supplied with hot-dip zinc coating. It is used for mechanical, pressure and general piping applications where corrosion protection is required.
Q2: What is the difference between ASTM A53 Grade A and Grade B?
Grade B has higher minimum tensile and yield strength than Grade A. For many export and engineering projects, ASTM A53 Grade B is more commonly requested.
Q3: Can you supply ASTM A53 Grade B galvanized pipe?
Yes. We can supply ASTM A53 Grade B galvanized steel pipe in ERW and seamless options, with SCH 40, SCH 80 and custom wall thickness.
Q4: What is the difference between Type E and Type S?
Type E is electric resistance welded pipe. Type S is seamless pipe. Type E is widely used for general pressure, water, gas, air and structural applications, while Type S is selected when seamless construction is required.
Q5: Can you provide threaded and coupled ASTM A53 galvanized pipe?
Yes. We can provide plain end, threaded end, coupled, grooved and beveled end pipes according to buyer requirements.
Q6: What documents can you provide?
We can provide MTC 3.1, commercial invoice, packing list, certificate of origin and third-party inspection reports such as SGS, BV, TUV or Intertek when required.
Q7: Can you cut the pipe to custom length?
Yes. Standard lengths include 5.8m, 6m, 11.8m and 12m. Custom cutting is also available for fabrication and container loading requirements.
Q8: Is ASTM A53 galvanized pipe suitable for outdoor use?
Yes. The zinc coating improves corrosion resistance and makes the pipe suitable for outdoor structures, fencing, scaffolding, handrails and general construction applications.
Q9: What is your MOQ?
MOQ depends on size, wall thickness and stock availability. Common sizes can be supplied in smaller trial orders, while customized sizes are usually quoted by tonnage.
Q10: How can I get the latest price?
Please send the pipe size, wall thickness, grade, length, surface requirement, end treatment and quantity. We will provide a detailed quotation with packing and delivery information.
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