Galvanized Steel Pipe Thickness 1mm to 12mm ASTM JIS Q235 S235jr S355j2 Round Square Welded Seamless Carbon Stainless Steel
Product Details
| Model NO.: | A53 | Technique: | Hot Rolled |
|---|---|---|---|
| Material: | Galvanzied Steel Pipe | Surface Treatment: | Hot Rolling |
| Usage: | Pipeline Transport, Boiler Pipe, Hydraulic/Automobile Pipe, Oil/Gas Drilling, Food/Beverage/Dairy Products, Machinery Industry, Chemical Industry, Mining, Construction & Decoration, Special Purpose | Section Shape: | Square |
| Standard: | ASTM A53-2007, ASTM A671-2006, ASTM A252-1 | Delivery Time: | 7-15days |
| Thickness: | 1mm-12mm | Length: | 5m-14m,5.8m,6m,10m-12m,12m |
| Surface: | Galvanzied | Transport Package: | Water Proof Paper+Metal Pallet+Angle Bar Protectio |
| Specification: | As Requirement | Trademark: | TISCO, POSCO, JISCO, LISCO Etc. |
| Origin: | China | HS Code: | 7208512000 |
| Supply Ability: | 50000ton/Month | ||
| Highlight |
galvanized steel pipe 1mm to 12mm,welded seamless carbon steel pipe,stainless steel pipe ASTM JIS |
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Product Description
| Galvanizing Process | Coating Formation | Zinc Coating Index | Core Properties | Service Life | Application Scope |
|---|---|---|---|---|---|
| Hot-Dip Galvanizing (HDG) | Immerse pickled steel pipes in molten zinc (440-460ºC) | Thickness: ≥80μm (average ≥640g/m²) | Strong coating adhesion, excellent corrosion resistance, wear-resistant | 20-50 years (outdoor environment) | Fire protection pipes, water supply pipes, structural supports, marine engineering |
| Electro-Galvanizing (EG) | Deposit zinc ions through electrolysis | Thickness: 10-50μm (10-50g/m²) | Weak adhesion, poor corrosion resistance, easy to peel off | 3-8 years (indoor dry environment) | Indoor decorative pipes, non-critical low-pressure fluid pipes |
- Common Carbon Steel Grades: Q195/Q215 (low strength), Q235 (balanced), Q345 (high strength)
- Special Function Grades: Anti-corrosion alloy steel, high-temperature resistant steel, low-temperature resistant steel
| Parameter Category | Typical Range (Q235 HDG) | Measurement Standard |
|---|---|---|
| Outer Diameter (OD) | DN15 (φ21.3mm) - DN300 (φ323.9mm) | ASTM A53, GB/T 3091 |
| Wall Thickness (WT) | 1.2mm - 12.0mm | ASTM A53, EN 10255 |
| Length | 6m/12m (standard); 3-18m (customizable) | Customer requirement |
| Mechanical Properties | Tensile strength: 375-500MPa; Yield strength: ≥235MPa | ASTM A53, GB/T 3091 |
| Zinc Coating Performance | Adhesion: No peeling after 180° bending | ASTM B117, ISO 9227 |
- North America: ASTM A53/A53M, ASTM A123
- Europe: EN 10255, EN ISO 1461
- China: GB/T 3091-2015, GB/T 13912
- Japan: JIS G3444, JIS G3302
- Construction & Municipal Engineering: Fire protection systems, water supply, structural supports
- Agriculture & Irrigation: Farm irrigation, sprinkler systems
- Industrial Fluid Transport: Low-pressure oil, chemical reagents, high-pressure air
- Marine & Coastal Engineering: Seawater cooling systems, coastal building water supply
- Decorative & Furniture: Indoor railings, furniture frames
- Clearly specify "hot-dip galvanized" (HDG) or "electro-galvanized" (EG)
- Define base steel grade and specifications
- Specify minimum zinc coating thickness for critical applications
- Request certification and documentation (MTR, ISO 9001, third-party inspection)
- Proper packaging and marking for transport
- Visual inspection for zinc coating defects
- Dimensional and coating thickness testing
- Adhesion and corrosion testing
- Mechanical and pressure testing
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