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Trusted Stainless Steel Pipes Supplier | JIS/EN/ASIS Certified
Trusted Stainless Steel Pipes Supplier | JIS/EN/ASIS Certified
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Trusted Stainless Steel Pipes Supplier | JIS/EN/ASIS Certified Product Details
1. Specifications
Comprehensive specifications of stainless steel pipes are designed to meet industrial demands, adhering to JIS, EN, ASME, and ASTM standards.
Parameter | Details |
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Standards | JIS G3459, EN 10216, ASME B36.19, ASTM A312/A269/A789 |
Material | 201, 304, 304L, 316, 316L, 321H, 409L, 904L, SUS315J1TP, SUS890LTP |
Outer Diameter | 6–630 mm (seamless), 2–550 mm (welded) |
Thickness | 1–40 mm (cold/hot rolled), 1.5–65 mm (seamless) |
Length | 2–12 meters (customizable) |
Process | Seamless (hot extrusion/cold drawing), Welded (ERW/TIG)
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Surface Finish | Polished, 2B, BA, Pickling, Hairline, Beveled Ends |
Certification | ISO 9001, SGS, TUV, EN10204 3.1/3.2 |
2. Hardness & Mechanical Properties
Our stainless steel pipes exhibit superior mechanical performance, validated by third-party testing.
Grade | Hardness (HV) | Tensile Strength (MPa) | Yield Strength (MPa) | Elongation (%) |
---|---|---|---|---|
304/304L | 150–200 | 520–750 | 205–310 | ≥35 |
316/316L | 160–220 | 530–770 | 210–320 | ≥35 |
SUS315J1TP | 170–230 | ≥520 | ≥205 | ≥35
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SUS890LTP | 180–240 | ≥490 | ≥215 | ≥35
7
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3. Dimensions & Attributes
Designed for versatility, our stainless steel pipes cater to high-pressure, corrosive, and structural applications.
Attribute | Description |
---|---|
OD Range | 2–630 mm (welded), 3–508 mm (seamless) |
Wall Thickness | Ultra-thin (1 mm) to ultra-thick (65 mm) |
Length Options | Fixed (6m/12m) or custom-cut (2–12m) |
Applications | Pressure vessels, boilers, heat exchangers, structural supports, marine environments |
4. Manufacturing Process
Advanced techniques ensure precision and durability for stainless steel pipes.
Process | Key Features |
---|---|
Seamless | Hot extrusion/cold drawing; No welds; Uniform wall thickness |
Welded | ERW/TIG welding; High corrosion resistance; Cost-effective |
Surface Treatment | Polishing (mirror/HL/BA), pickling (oxide removal), beveling (for welding) |
Quality Control | Eddy current, hydraulic pressure, and ultrasonic testing |
Detailed Technical Descriptions
Tensile & Bend Strength
Our stainless steel pipes are engineered for high tensile strength (520–770 MPa) and bend resistance, ensuring structural integrity under extreme loads. For example, SUS890LTP pipes achieve ≥490 MPa tensile strength, ideal for high-temperature boilers. The bend strength is enhanced by cold-working processes (e.g., cold rolling), which refine grain structures and reduce brittleness.
Identification Methods
Pipes are marked with laser engraving or embossing, including:
- Grade (e.g., 304, SUS315J1TP)
- Standard (e.g., JIS G3459, ASTM A312)
- Size (OD × thickness × length)
- Manufacturer Code (e.g., TJC Steel, Zhstainlesspipe)
Weight Calculation Formula
Calculate pipe weight (kg/m) using:
Weight = (OD - Thickness) × Thickness × 0.02491
Example: For a 114.3 mm OD × 6 mm thickness 304 pipe:
(114.3 - 6) × 6 × 0.02491 = 16.2 kg/m
Why Stainless Steel Pipes Rust?
Despite corrosion resistance, stainless steel pipes may rust due to:
- Chloride Exposure (e.g., marine environments).
- Intergranular Corrosion (improper welding or heat treatment).
- Surface Contamination (iron particles or grease).
- Low Chromium Content (grades like 409L are less resistant).
Prevent rust by using stainless steel pipe clamps (isolate galvanic corrosion) and selecting higher grades (316L/904L).
Why Choose Our Stainless Steel Pipes?
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Certified Excellence
Third-party inspections (SGS, TUV) ensure traceability.
Compliant with JIS, EN, ASME, and ISO standards. -
Global Supplier Network
As leading stainless steel pipe suppliers, we serve industries in 50+ countries with warehouses in Wenzhou, Jiangsu, and Johor. -
Technical Expertise
Over 20 years of experience in producing ultra-thin/thick pipes for heat exchangers and superheaters. -
Custom Solutions
Tailor-made sizes, finishes, and certifications (e.g., EN10204 3.2). -
Logistics Assurance
Fast global shipping with secure packaging (wooden cases/bundles).
