Xi'an Dongmeng Group Co., Ltd. is one of the most reliable manufacturers and suppliers of 150mm Stainless Steel Pipe Supplier | DN150 6 Inch SS Pipe ASTM A312 304 316 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.
150mm Stainless Steel Pipe Supplier | DN150 6 Inch SS Pipe ASTM A312 304 316
A 150mm stainless steel pipe is widely used in industrial piping systems, chemical processing, food equipment, water treatment, marine engineering, construction structures, heat exchangers and fluid transportation projects. Depending on the drawing or piping standard, "150mm stainless steel pipe" may refer to either a custom 150mm outside diameter stainless steel tube or a DN150 / NPS 6 stainless steel pipe, which normally uses 168.3mm outside diameter in international pipe systems. For this reason, buyers should confirm the required outside diameter, wall thickness, schedule, material grade and end use before ordering.
Xi'an Dongmeng Group Co., Ltd. supplies 150mm stainless steel pipe in seamless, welded, polished, pickled, annealed and custom-cut forms. Materials include 304, 304L, 316, 316L, 321, 310S, 904L, 2205 and 2507 stainless steel. ASTM A312 covers seamless, welded and cold-worked austenitic stainless steel pipe for high-temperature and general corrosive service, while ASTM A778 covers welded unannealed austenitic stainless steel tubular products for low to moderate temperature corrosive service.
Important Size Note: 150mm OD vs DN150 Pipe
| Customer Search Term | Common Meaning | Key Point |
|---|---|---|
| 150mm stainless steel pipe | May mean actual 150mm outside diameter | Suitable for custom tube, structure, fabrication, handrail, equipment |
| DN150 stainless steel pipe | Nominal pipe size | Usually equivalent to NPS 6 pipe |
| 6 inch stainless steel pipe | Nominal pipe size | Standard OD is commonly 168.3mm |
| 150mm ID pipe | Inside diameter requirement | Need OD + wall thickness calculation |
Recommendation for buyers: Please send your required OD × WT × Length, or DN / NPS + Schedule, so we can quote accurately.
Product Specification
| Item | Specification |
|---|---|
| Product Name | 150mm Stainless Steel Pipe / DN150 Stainless Steel Pipe |
| Available Size | 150mm OD custom pipe, DN150 / NPS 6 pipe, other sizes from 1/8" to 36" |
| Standard DN150 OD | 168.3mm for NPS 6 pipe |
| Wall Thickness | 1.5mm–30mm or Sch 5S / 10S / 40S / 80S / 160 / XXS |
| Length | 3m, 5.8m, 6m, 11.8m, 12m or custom cut |
| Type | Seamless, welded, ERW, EFW, fabricated pipe |
| Surface | Pickled, annealed, polished, brushed, mirror, sandblasted |
| Material Grades | 201, 304, 304L, 316, 316L, 321, 310S, 904L, 2205, 2507 |
| Standards | ASTM A312, ASTM A778, ASTM A358, EN 10217-7, EN 10216-5, JIS, DIN |
| End Finish | Plain end, bevel end, threaded end, grooved end |
| Processing | Cutting, polishing, bending, welding, drilling, end machining |
| Documents | MTC 3.1, PMI report, inspection report, packing list, certificate of origin |
DN150 / 6 Inch Stainless Steel Pipe Schedule Chart
| Nominal Size | Outside Diameter | Schedule | Wall Thickness | Common Application |
|---|---|---|---|---|
| DN150 / NPS 6 | 168.3mm | Sch 5S | 2.77mm | Low-pressure fluid, ventilation, light piping |
| DN150 / NPS 6 | 168.3mm | Sch 10S | 3.40mm | Water, food processing, chemical lines |
| DN150 / NPS 6 | 168.3mm | Sch 40S | 7.11mm | General pressure piping, industrial systems |
| DN150 / NPS 6 | 168.3mm | Sch 80S | 10.97mm | Higher pressure and corrosive service |
| DN150 / NPS 6 | 168.3mm | Sch 160 | 18.26mm | Heavy-wall pressure service |
| DN150 / NPS 6 | 168.3mm | XXS | 21.95mm | Heavy-duty mechanical and high-pressure systems |
Available Stainless Steel Grades
| Grade | Main Advantage | Typical Applications |
|---|---|---|
| 304 | General corrosion resistance, cost-effective | Water pipe, food equipment, decoration, structure |
| 304L | Low carbon, better welding performance | Welded piping, tanks, process equipment |
| 316 | Mo-added, better chloride resistance | Marine, chemical, coastal projects |
| 316L | Low carbon 316, excellent weldability | Chemical pipe, food, pharmaceutical, marine |
| 321 | Titanium stabilized, high-temperature resistance | Heat exchanger, exhaust system, boiler parts |
| 310S | High-temperature oxidation resistance | Furnace, heat treatment, thermal equipment |
| 904L | Excellent acid corrosion resistance | Sulfuric acid, seawater, chemical plants |
| 2205 | Duplex strength and chloride resistance | Desalination, oil & gas, pressure equipment |
| 2507 | Super duplex, high strength | Offshore, seawater, aggressive chemical media |
Chemical Composition Reference
| Grade | C Max | Cr | Ni | Mo | Key Feature |
|---|---|---|---|---|---|
| 304 | 0.08 | 18.0–20.0 | 8.0–10.5 | - | General-purpose stainless steel |
| 304L | 0.03 | 18.0–20.0 | 8.0–12.0 | - | Low carbon for welding |
| 316 | 0.08 | 16.0–18.0 | 10.0–14.0 | 2.0–3.0 | Better corrosion resistance |
| 316L | 0.03 | 16.0–18.0 | 10.0–14.0 | 2.0–3.0 | Marine and chemical piping |
| 321 | 0.08 | 17.0–19.0 | 9.0–12.0 | - | Ti stabilized |
| 310S | 0.08 | 24.0–26.0 | 19.0–22.0 | - | High-temperature service |
Mechanical Properties
| Grade | Tensile Strength | Yield Strength | Elongation |
|---|---|---|---|
| 304 / 304L | ≥515 MPa | ≥205 MPa | ≥35% |
| 316 / 316L | ≥515 MPa | ≥205 MPa | ≥35% |
| 321 | ≥515 MPa | ≥205 MPa | ≥35% |
| 310S | ≥515 MPa | ≥205 MPa | ≥35% |
| 2205 Duplex | ≥620 MPa | ≥450 MPa | ≥25% |
Manufacturing Options
Seamless 150mm Stainless Steel Pipe
Seamless stainless steel pipe is recommended for pressure service, high-temperature systems, chemical pipelines, boiler equipment and applications requiring uniform wall strength. It has no longitudinal weld seam and is suitable for demanding engineering environments.
Welded 150mm Stainless Steel Pipe
Welded stainless steel pipe is cost-effective for large diameter piping, structural use, low to medium pressure lines, water treatment, food processing and decorative fabrication. Welded pipe can be supplied in pickled, annealed, polished or brushed finish.
Custom 150mm OD Stainless Steel Tube
For customers who require an exact 150mm outside diameter instead of DN150 / 168.3mm standard pipe, Dongmeng can supply customized stainless steel round tube with specified OD, wall thickness and length.
Surface Finish Options
| Surface | Description | Application |
|---|---|---|
| Pickled / Annealed | Industrial matte finish | Chemical, pressure piping |
| Polished 180 / 240 / 320 grit | Smooth decorative surface | Handrail, structure, equipment |
| Brushed Finish | Uniform linear texture | Architecture, decoration |
| Mirror Finish | Bright reflective surface | Decoration, furniture, visible structure |
| Sandblasted | Matte anti-fingerprint texture | Equipment, architectural projects |
Application Industries
150mm stainless steel pipe is commonly used in:
Chemical processing pipelines
Petrochemical and refinery systems
Food and beverage production lines
Pharmaceutical clean piping
Water treatment and desalination
Marine and coastal engineering
Heat exchangers and pressure equipment
Building structure and architectural decoration
Industrial exhaust and ventilation systems
Oil & gas auxiliary pipelines
For welded stainless tubes used under pressure, EN 10217-7 provides technical delivery conditions for stainless steel tubes and covers material selection, forming, weld condition, delivery condition, chemical composition and mechanical properties.
Processing and Customization
Xi'an Dongmeng Group can provide value-added processing for 150mm stainless steel pipe:
| Processing Service | Details |
|---|---|
| Cut to Length | 100mm–12000mm custom cutting |
| Beveling | 30°, 37.5° or customized bevel end |
| Polishing | 180 grit, 240 grit, 320 grit, 400 grit, mirror |
| Threading | BSP, NPT or customized thread |
| Grooving | For mechanical coupling systems |
| Drilling | Hole processing according to drawings |
| Welding Fabrication | Flange welding, elbow welding, pipe spool processing |
| Marking | Grade, heat number, size, standard, batch number |
Inspection & Quality Assurance
Every batch of 150mm stainless steel pipe can be inspected before shipment according to the customer's project requirements.
| Inspection Item | Purpose |
|---|---|
| PMI Test | Verify material grade and alloy elements |
| Chemical Composition | Confirm Cr, Ni, Mo and other elements |
| Mechanical Test | Tensile strength, yield strength, elongation |
| Dimension Inspection | OD, wall thickness, length, ovality |
| Surface Inspection | Check scratches, dents, cracks and weld quality |
| Hydrostatic Test | Pressure integrity test for pipe |
| Eddy Current / Ultrasonic Test | Non-destructive testing for defects |
| Flattening / Flaring Test | Check forming and welding performance |
| MTC 3.1 | Traceable material certificate |
Third-party inspection by SGS, BV, TÜV, Intertek or customer-appointed agencies can be arranged before shipment.
Packaging & Shipping
To protect stainless steel pipes during long-distance transportation, we provide export seaworthy packing.
Plastic caps on both ends
Waterproof paper or plastic film wrapping
Steel strip bundling
Wooden case or steel frame packing for polished pipes
Clear label with grade, size, heat number and quantity
Container loading plan for FCL or LCL shipment
Photos and packing list before delivery
Why Choose Xi'an Dongmeng Group
1. Clear Size Confirmation
We help customers distinguish 150mm OD pipe from DN150 / NPS 6 pipe to avoid wrong purchasing.
2. Multiple Stainless Steel Grades
304, 316, 321, 310S, 904L, 2205 and 2507 are available for different corrosion and temperature requirements.
3. Seamless and Welded Supply
Both pressure-grade seamless pipe and cost-effective welded pipe can be supplied.
4. Custom Processing Capability
Cutting, polishing, beveling, threading, grooving and fabrication are available.
5. Strict Quality Control
PMI, dimensional inspection, surface inspection, hydrostatic testing and MTC 3.1 can be provided.
6. Export Experience
Seaworthy packing, global delivery and project documentation support for international B2B buyers.
FAQ
Q1: Is 150mm stainless steel pipe the same as DN150 pipe?
Not always. A custom 150mm pipe usually means the outside diameter is exactly 150mm. DN150 / NPS 6 pipe is a nominal pipe size and normally has an outside diameter of 168.3mm. Please confirm your drawing requirement before ordering.
Q2: What stainless steel grades are available?
We supply 304, 304L, 316, 316L, 321, 310S, 904L, 2205 duplex and 2507 super duplex stainless steel pipe.
Q3: Can you supply 150mm stainless steel pipe in Schedule 40?
Yes. DN150 / NPS 6 Schedule 40S stainless steel pipe is commonly supplied with 168.3mm outside diameter and 7.11mm wall thickness.
Q4: Do you provide seamless pipe or welded pipe?
Both are available. Seamless pipe is recommended for pressure and high-temperature service. Welded pipe is suitable for structural, decorative, water treatment and general industrial applications.
Q5: Can you cut the pipe to custom length?
Yes. We can cut stainless steel pipe to 3m, 5.8m, 6m, 11.8m, 12m or customized lengths according to your project.
Q6: Can you provide polished 150mm stainless steel pipe?
Yes. Polished, brushed, mirror and industrial pickled finishes are available.
Q7: What documents can you provide?
We can provide MTC 3.1, PMI report, inspection report, packing list, certificate of origin and third-party inspection documents if required.
Q8: How should I request an accurate quotation?
Please send material grade, size, wall thickness or schedule, length, quantity, surface finish, standard and application. Drawings are welcome for custom pipe or fabrication projects.
Contact Us
Get 150mm Stainless Steel Pipe Price Today
Looking for 150mm OD stainless steel pipe or DN150 / 6 inch stainless steel pipe? Send us your grade, size, wall thickness, quantity and application. Our sales and technical team will help you select the right stainless steel pipe and provide a fast quotation.
Xi'an Dongmeng Group Co., Ltd.
Phone / WhatsApp / WeChat: +8615769214734
Email: office@dongmjd.com
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