ASTM A53 galvanized ERW steel pipe is a versatile and widely used carbon steel pipe product. It is manufactured to the specifications of the ASTM A53 standard, designed for mechanical and pressure applications, and is suitable for conveying steam, water, gas, and air lines. The pipe undergoes a galvanizing process, typically hot-dip galvanizing, which provides a durable zinc coating for superior corrosion resistance.
Basic info
| Product | ASTM A53 galvanized ERW steel pipe |
| Process | ERW and Hot Dip Galvanized |
| Standard | ASTM A53 |
| Grade | GrA, GrB |
| Size range | OD 1/2"~26"(21.3~660mm), or Sizes 10x10~600x600mm |
| Pipe ends | Plain, Bevel , NPT Threading & Coupling, Grooved |
| Shape | Round, Square, Rectangular |
Specifications and Features
Standard & Grade: Conforms to ASTM A53 (also known as ASME SA53), commonly available in Grade A and Grade B carbon steel grades. Materials include Q195, Q235, Q345, or A36, S235JR, S355JR.
Manufacturing Technique: Produced using the ERW process, where the steel strip is formed and the seam is welded through electrical resistance heating.
Cost-Effectiveness: ERW manufacturing is an efficient process, and carbon steel is widely available, making this product a more economical choice than many alloy or stainless-steel alternatives while offering enhanced corrosion protection over plain carbon steel .
High Strength and Durability: The base material is carbon steel, offering excellent mechanical properties, including high tensile strength and good load-bearing capacity, suitable for structural applications and fluid conveyance under pressure.
Surface Treatment: Hot-dip galvanized (HDG) coating. Coating weight typically ranges from 40 to 600 grams per square meter, ensuring robust protection. The zinc coating provides rust-free protection for decades, offering a cost-effective alternative to stainless steel while maintaining strength.
Manufacturing Process
The production involves two primary stages:
ERW Pipe Manufacturing: Steel coils (typically grades like Q235, Q355, or equivalent to API 5L ASTM A53 Grade A/B) are uncoiled, formed into a cylindrical shape through a series of rolls, and the edges are welded together using electric resistance welding to create a seamless bond.
Galvanizing: The formed ERW pipe undergoes surface cleaning (pickling and fluxing) and is then immersed in a molten zinc bath (hot-dip galvanizing), resulting in a metallurgically bonded zinc-iron alloy layer on its surface.
Applications
Construction & Infrastructure: Scaffolding, structural frameworks, handrails, fence posts, and curtain wall systems.
Fluid Conveyance: Water supply lines, plumbing, fire sprinkler systems, and low-pressure gas distribution (where codes permit).
Industrial Uses: Support structures, cable conduits, agricultural equipment, and greenhouse frames.
Outdoor and Corrosive Environments: Marine applications (non-saltwater immersion), chemical plant piping (for non-corrosive media), and any setting exposed to weather
quality control
ASTM A53 galvanized ERW steel pipe undergoes strict inpections per standards reuqirements:
* Hydrostatic Pressure Test
* Non-Destructive Test (Eddy Current, Ultrasonic)
* Chemical composition test
* Mechanical Property Test
* Dimension & Visual Inspection
* Full Traceability (Mill Test Certificates 3.1 provided)
* Accept the third party inspection before shipment
shipment
Contact
Kevin
Tianjin Shenzhoutong Steel pipe Co.,Ltd
kevin@tjshenzhoutong.com
Mob/whatsapp/wechat +86 15267768016
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