High Quality Stainless Steel Tube Building Material Seamless Ss Pipe 316
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Product Attributes
- After-sales Service
- Cutting
- Warranty
- /
- Type
- Seamless
- Model NO.
- 316 Stainless Steel Pipe
- Technique
- Cold Drawn
- Material
- Stainless Steel
- Surface Treatment
- Polished
- Usage
- Oil/Gas Drilling, Food/Beverage/Dairy Products, Chemical Industry, Construction & Decoration
- Section Shape
- Round
- Material Grade
- 316 (Uns S31600)
- Standards
- GB, AISI, ASTM, DIN, En, JIS
- Size Range
- 1/4" (6mm) to 24" (600mm)
- Wall Thickness
- 0.5mm (0.02") to 12mm (0.47")
- Key Features
- Corrosion-Resistant, Weldable, High Ductility
- Tensile Strength
- ≥515 MPa (75,000 Psi)
- Yield Strength
- ≥205 MPa (30,000 Psi)
- Elongation (%)
- ≥40%
- Hardness (Rockwell B)
- ≤92 Hrb
- Length
- 1-12m
- Surface
- Ba/2b/No.1/No.3/No.4/8K/Hl/2D/1d
- Application
- Oil&Gas, Petroleum, Vessels, Ship Building, Water
- Surface Finish
- 2b
- Tolerance
- ±1%
- Material Series
- 300 Series
- Transport Package
- Standard Packing
- Specification
- UNS S31600
- Trademark
- Zhongding
- Origin
- China
- Production Capacity
- 2000tonnes Per Week
Product Images of High Quality Stainless Steel Tube Building Material Seamless Ss Pipe 316
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High Quality Stainless Steel Tube Building Material Seamless Ss Pipe 316 -
High Quality Stainless Steel Tube Building Material Seamless Ss Pipe 316 -
High Quality Stainless Steel Tube Building Material Seamless Ss Pipe 316 -
High Quality Stainless Steel Tube Building Material Seamless Ss Pipe 316 -
High Quality Stainless Steel Tube Building Material Seamless Ss Pipe 316 -
High Quality Stainless Steel Tube Building Material Seamless Ss Pipe 316 -
High Quality Stainless Steel Tube Building Material Seamless Ss Pipe 316
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Product Description
| Available Grades | 200 Series: 201,202 |
| 300 Series: 304, 304L, 304H, 309, 309S, 310, 310S, 316, 316L, 317, 317L, 321, 321H, 347, 347H | |
| 400 Series: 409, 410S, 416, 420, 430, 439, 440, 444, 446 | |
| Duplex and Others: 2205, 2507, S31803, S32205, S32750, S32760, 253MA, 254SMO, 904L etc |
Comparison: 316 vs. 304
| Property | 316 Stainless Steel Pipe | 304 Stainless Steel Pipe |
|---|---|---|
| Molybdenum (Mo) | 2-3% (critical for corrosion) | None |
| Corrosion Resistance | Superior (chlorides, acids) | Good (mild environments) |
| Cost | More expensive (~20-30% higher) | Lower cost |
| Temperature Limit | Higher (~1600°F vs. ~1500°F) | Slightly lower |
Note: For welding, 316L is preferred to avoid carbide precipitation.
Manufacturing Standards
-
ASTM A312: Seamless/welded pipes for general corrosion service.
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ASTM A358: Welded pipes for high-corrosion applications.
-
ASTM A790: Covers duplex stainless steels (e.g., 316L).
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EN 1.4401 (316) / 1.4404 (316L): European equivalents.
Outer Diameter (OD) & Wall Thickness (WT)
| Type | Common Sizes (mm/inch) | Wall Thickness (mm/inch) |
|---|---|---|
| Small Diameter | 6mm (1/4") - 50mm (2") | 0.5mm (0.02") - 3mm (0.12") |
| Medium Diameter | 60mm (2.5") - 150mm (6") | 2mm (0.08") - 5mm (0.2") |
| Large Diameter | 200mm (8") - 600mm (24") | 4mm (0.16") - 12mm (0.47") |
Schedule (SCH) Thickness for Pipes (ASTM A312)
| Schedule (SCH) | Approx. Wall Thickness (mm/inch for DN50/NPS 2") |
|---|---|
| SCH 5S | 1.65mm (0.065") |
| SCH 10S | 2.11mm (0.083") |
| SCH 40S | 3.68mm (0.145") |
| SCH 80S | 5.56mm (0.219") |
Metric vs. Inch Size Comparison
| NPS (Inch) | DN (Metric) | Actual OD (mm) |
|---|---|---|
| 1/2" | DN15 | 21.3mm |
| 3/4" | DN20 | 26.7mm |
| 1" | DN25 | 33.4mm |
| 2" | DN50 | 60.3mm |
| 4" | DN100 | 114.3mm |
Stainless Steel Pipe Surface Finishes Comparison
| Finish | Process | Appearance | Roughness (Ra) | Corrosion Resistance | Cost | Typical Applications |
|---|---|---|---|---|---|---|
| 2B | Cold rolled + bright annealed + light polish | Smooth, semi-reflective | ≤0.3μm | Good | $$ | Food equipment, chemical pipes, general industry |
| BA | Bright annealed in hydrogen/vacuum | Highly reflective, near-mirror | ≤0.2μm | Excellent | $$$ | Medical, semiconductor, high-end decor |
| No.1 | Hot rolled + pickled | Rough, matte with mill marks | 3.2-6.3μm | Fair | $ | Structural, boilers, industrial pipes |
| HL (Hairline) | Mechanical brushing | Unidirectional satin lines | 0.4-1.0μm | Good | $$ | Elevators, appliances, architecture |
| No.4 | Uniform abrasive grinding | Consistent satin matte | 0.5-1.5μm | Good | $$ | Kitchen equipment, decorative panels |
| No.8 | Progressive polishing | Perfect mirror | ≤0.1μm | Best | $$$$ | Luxury decor, optical equipment |
| Electropolished | Electrochemical polishing | Ultra-smooth, bright | ≤0.05μm | Superior | $$$$$ | Pharma, semiconductor, ultra-clean systems |
316 pipes are used in aggressive environments where 304 would fail:
-
Marine/Offshore: Shipbuilding, seawater pipelines.
-
Chemical Processing: Sulfuric/phosphoric acid handling.
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Oil & Gas: Downhole equipment, refinery piping.
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Medical/Surgical: Implants, sterile tubing.
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Food Industry: Brine, vinegar, or high-salt environments.
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Pharmaceutical: High-purity fluid systems.
Q: When to use 316L vs. 316?
A: 316L for welding or extreme corrosion (e.g., welded pipelines). 316 for non-welded, high-strength needs.
Q: Can 316 stainless steel rust?
A: Rarely, but prolonged exposure to extreme chlorides (e.g., undiluted bleach) may cause pitting.
Q: How to identify 316 pipes?
A: Check markings ("316"/"S31600") or Mill Test Certificates (MTC). A molybdenum test (e.g., XRF analyzer) can confirm.
For projects involving saltwater, acids, or high temperatures, 316 is the gold standard. Always specify ASTM/EN standards and surface finishes based on application needs.
About the Supplier
This supplier has been audited by CTI. Verify the report on the official CTI website with ID "QIP-ASR253077". Items marked "
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Company Profile
ZHEJIANG ZHONG DING IRON AND STEEL Co., Ltd is a large-scale enterprise integrating production, sales and trade. The company now has 8 hot-rolling piercing production lines and 30 cold-rolling unit production lines, with a production range of 10mm-219mm, wall thickness 0.5mm-22mm, tolerance range of +-2 wire precision steel pipes, and an annual inventory of more than 8, 000 tons of precision bright tubes; Advanced There are 6 double-sided submerged arc welded spiral steel pipe production lines, which can produce double-sided submerged arc welded spiral steel pipes with a diameter of 219-3620mm and a wall thickness of 6-30mm. The annual production of spiral pipes is more than 200, 000 tons and is trusted by the majority of the industry.
ZHONG DING STEEL's sales varieties include: Stainless steel plates, stainless steel pipes, stainless steel rods, seamless steel pipes, thick-walled steel pipes, oxygen blowing pipes, longitudinally welded pipes, color steel plates, C-shaped steels, spiral pipes, galvanized pipes, cold drawn flat steels, Strip steel, cold-rolled strip steel, steel plate, round steel, angle channel steel, rail steel, etc., with complete varieties, one-stop purchasing unit.
We always adhere to the business philosophy of "integrity management, customer first", and strive to achieve the best products, the best quality, the lowest price, and the most complete service to thank new and old customers. The sales network has now spread all over the country. All my colleagues in the company warmly welcome new and old friends to visit, patronize, and guide, let us work together to create brilliant!
About Our Factory & Business Background
-
Business Type
- Trading Company
- Address
- Baolong Commercial Plaza, Zhonghe Street, Yinzhou District, Ningbo, Zhejiang, China
-
Number of Employees
- 14
-
Registered Capital
- 16,880,000 RMB
-
Terms of Payment
- LC, T/T, D/P, PayPal, Western Union, Small-amount payment
-
International Commercial Terms(Incoterms)
- FOB, EXW
-
Average Lead Time
-
Peak Season Lead Time: within 15 workdays
Off Season Lead Time: within 15 workdays -
Nearest Port
- Ningbo Port
-
Minimum Order Quantity
- 1 Ton
-
Supply Chain Partners
- 47
Our Production Capability & Technical Expertise
-
Main Products
- Seamless Steel Pipe, Welded Steel Pipe, Carbon steel sheet, Carbon Steel Coil, Decking sheet, Steel Beam, Steel round bar, Steel Square pipe, Steel Rail, Stainless steel pipe/Strips/Coil/Bar/Plate
-
Customization Options
- Customization from Samples
-
R&D Engineers
- 1 people
Our Industry Experience & Global Business Record
-
Year of Establishment
- 2020-10-23
-
Export Year
- 4 Years
-
Main Markets
- Southeast Asia/ Mideast
-
Repeat Buyers Choice
- 80%~100%
-
Number of Foreign Trading Staff
- 8
-
Overseas Agent/Branch
- No
-
New Products Launched in Last year
- Yes
Our Certifications, Standards & Industry Recognition
-
Cooperated with Fortune 500
- No
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