With in-house quality testing and certification, you can count on quality materials delivered with proper documentation.
Stainless Steel 321/321h Welded Pipe Manufacturer.
WELDED: DIN 1.4541 Pipe | UNS S32100 Pipe | JIS SUS 321 Pipe | ASTM A312 TP321h Pipe | BS 321S31 Pipe | EN X6CrNiTi18-10 Pipe | DIN 1.4878 Pipe
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MPJ Tubing Solutions LLP stands out as a reputable manufacturer and exporter of Stainless Steel 321/321H Welded Pipes, adhering meticulously to industry standards such as ASTM A312. These pipes, known as ASTM A312 TP321 Stainless Steel Welded Pipes, are recognized for their exceptional quality and versatility. As an exporter of Stainless Steel UNS S31703 Welded Pipe to Brazil, MPJ Tubing Solutions LLP is committed to delivering high-quality stainless steel solutions that meet the demands of a global clientele.
The Stainless Steel 321/321H Welded Pipes are renowned for their corrosion resistance and suitability for various applications across diverse industries. MPJ Tubing Solutions LLP prioritizes precision manufacturing, ensuring strict compliance with international standards, including ASTM, ASME, DIN EN (German), NF (AFNOR), and JIS (Japan Industrial Standard). This unwavering commitment ensures that their products meet the stringent requirements of global projects.
Customers have a wide array of options when choosing SS 321/321H Welded Pipes from MPJ Tubing Solutions LLP. These pipes are available in various outer diameters, ranging from 1/8″” NPS to 12″” NPS (10.30 mm to 323.90mm), ensuring compatibility with a broad spectrum of industrial needs. Additionally, customers can select from various wall thicknesses, including Sch 5s, Sch 10s, Sch 40s, and Sch 80s, to meet specific project specifications.
With lengths extending up to 12 meters, MPJ Tubing Solutions LLP offers flexibility and convenience to customers in diverse industries. Their steadfast commitment to precision engineering and strict adherence to international standards make Stainless Steel 321/321H Welded Pipes a dependable choice for industries in search of top-notch stainless steel solutions.
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Stainless Steel 321/321h Welded Pipe Chemical Composition
| Grade | Range | Ni | Cr | P | C | Mn | N | Si | S | Ti |
|---|---|---|---|---|---|---|---|---|---|---|
| 321 | Min. | 9.0 | 17.0 | 0 | – | – | – | – | – | – |
| Max. | 12.0 | 19.0 | 0.045 | 0.08 | 2.0 | 0.10 | 1.0 | 0.030 | 5(C+N) -0.70 | |
| 321H | Min. | 9.0 | 17.0 | – | 0.04 | – | – | – | – | – |
| Max. | 12.0 | 19.0 | 0.045 | 0.010 | 2.00 | 0.10 | 1.00 | 0.030 | 4(C+N) -0.70 |
SS 321/321h Welded Pipes Mechanical Properties
| Grade | Tensile Strength min (MPa) | Yield Strength 0.2% Proof min (MPa) | Hardness | Elongation (% in 50mm) min | |
|---|---|---|---|---|---|
| Brinell max (HB) | Rockwell B max (HR B) | ||||
| 321/321h | 515 | 205 | 217 | 95 | 35% |
SS ASTM A312 TP321h Pipe Equivalent Grades
| Grade | UNS No | Old British | Euronorm | Japanese JIS | Swedish SS | GOST | ||
|---|---|---|---|---|---|---|---|---|
| BS | En | No | Name | |||||
| 321 | S32100 | 321S31 | X6CrNiTi18-10 | 1.4541 | – | SUS 321 | 2337 | – |
| 321h | S32109 | 321S51 | X10CrNiTi18-10 | 1.4878 | – | SUS 321h | – | – |
321/321h Stainless Steel Welded Pipes Standard Specifications
Spec. No.
Title
Scope
ASTM A 312
Welded Austenitic Stainless Steel Welded Pipe.
Austenitic Stainless Steel Welded Pipe intended for use in the diary and food industry in sizes up to and including 4 in. in outside diameter.
Let’s discuss about your ongoing project
Size Range
- Outer Diameter: 1/8 NPS to 12 NPS ( 10.30 mm to 323.90mm )
- Wall Thickness: Sch 5s, Sch 10s, Sch 40s, Sch 80s
- Length: Up to 12mtr long
- Specifications: ASTM, ASME, DIN EN (GERMAN), NF (AFNOR), JIS (JAPAN)
Supply Condition
- Solution Annealed & Passivated
Features
- Ability to supply pipes with stringent NDT Testing, Special Chemistry, Lower Residual Stress values.
- Closer Dimensional Tolerance & higher Corrosion Resistance etc.
- We offer customized cut Length to save time of our customers.
321/321h SS Welded Pipe Quality Control
To ensure a quality product, MPJ is holding certificate ISO 9001:2015, ISO 45001, OHSAS 14001, & CE-PED. We are also members of various renowned agencies and Chambers of Commerce including MASSMA, EEPC, FICCI, FIEO, Indian Merchants Chamber, etc. With state-of-the-art manufacturing processes, contemporary technologies, and proficient services, we consider: offering the finest quality, best in class products. Compliance with specifications as per standards, Outer Diameter, Thickness, Inside Diameter, Inside Finish, Marking, Ends, and Finishing. This ensures that we never face a rejection of the Stainless Steel 321h Welded Pipe supplied.
Brand – 
SS 321 Welded Pipe are marked in requirement of the international standards.
Format: ” BRAND-SIZE-SPECIFICATION-GRADE-HEAT NUMBER-LOT NUMBER “
This marking helps for the identification of the Pipe and supported with the Material Test Report. It is 100% traceable to our mill.
Available Stainless Steel Welded Pipe Grades
Stainless Steel 321 ERW Pipes Packing & Documentation
ASTM A269 TP321h Welded Pipes are surface wash and clean to remove all impurities and stock in the warehouse. Then it is wrapped in thin plastic and also it ends are protected by plastic caps to avoid any damage in transit. Stainless Steel 321 Welded Pipe is bundled in bubble wrap followed by assorting them in colored plastic bundles. An outer rope is tied to protect the piping and they are packed in wooden box or container.
MPJ Provide Stainless Steel 321 Welded Pipe and SS 321hL Welded Pipes with all necessary documents such as commercial invoice, packing list, Test Reports, HS Code, Country of Origin attested by the chamber of commerce, Fumigation Certificate, Warranty Letter, and Base Material Certificates. Every lot is supplied with a material test certificate as per EN 10204 NACE 3.1 standards indicating the chemical and mechanical properties of the Welded Pipes.
We also confirm the guarantee of the Welded Pipes supplied as per Purchase order specifications and attest the same in the Material Test Certificate. We also welcome any third party inspection from an agency nominated by the customer to comply with NACE 3.2 Certification if required by the customer at an extra cost.
SS 321/321h Welded Pipe Application Industries
- Oil & Gas Exploration
- Petrochemicals and Refineries
- Cross Country Pipe Line for Gas & Water
- Pipes for Engineering purpose
- Thermal, Nuclear and Solar Power Plants
- Desalination Plants
- Chemical Industries
- Aerospace
- Atomic Energy
- Pharmaceutical
- Food and Dairy
- Automobile
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