Stainless Steel 321 and 321H Welded Pipes

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Stainless Steel 321 and 321H Welded Pipes Manufacturer, Supplier and Exporter in Indonesia, Jakarta

Bulan Pipes and Tubes of Jakarta, Indonesia, is a top manufacturer and distributor of 321 and 321H Welded Pipes made from Stainless Steel. Having established a name that stands for quality, innovation, and customer satisfaction, we supply high-quality stainless steel solutions engineered for high-demanding industrial uses. Our welded pipes 321/321H are crafted and manufactured to meet strict international standards, exhibiting superior corrosion resistance, thermal stability, and mechanical strength. Suitable for high-temperature applications, these pipes provide long-lasting performance across industries. We at Bulan ensure the delivery of reliable, efficient, and cost-effective piping solutions to our customers in Indonesia and worldwide.

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Stainless Steel 321 and 321H Welded Pipes are austenitic stainless steels containing iron, chromium (17–19%), nickel (9–12%), and titanium (5x carbon content). The titanium addition provides improved intergranular corrosion resistance, particularly after welding. These pipes provide excellent tensile strength (up to 750 MPa), good ductility, and high mechanical stability at high temperatures. The 321H version has increased carbon content for better creep resistance. With improved oxidation resistance, weldability, and thermal resistance, these pipes are well suited for highly critical high-temperature applications and thermal cycling environments.

Stainless Steel 321 and 321H Welded Pipes Specification

Specifications : ASTM A312 / ASME SA312

Outside Diameter : 6.00 mm OD up to 914.4 mm OD, Sizes up to 24″ NB available Ex-stock, OD Size available Ex-stock

Thickness : 0.3mm – 50 mm, SCH 5, SCH10, SCH 40, SCH 80, SCH 80S, SCH 160, SCH XXS, SCH XS

Size : 1/2″ NB – 24″ NB

Type : Welded

Form: Round Pipes, Square Pipes, Rectangular Pipes.

Length : Single Random, Double Random & Required Length

End : Plain End, Beveled End, Treaded

Equivalent Grades for Stainless Steel 321 and 321H Welded Pipes

STANDARD	WERKSTOFF NR.	UNS	JIS	EN
SS 321	1.4541	S32100	SUS 321	X6CrNiTi18-10
SS 321H	1.4878	S32109	SUS 321H	X12CrNiTi18-9

321 and 321H Stainless Steel Welded Pipes Chemical Composition

Grade	C	Mn	Si	P	S	Cr	N	Ni	Ti
SS 321	0.08 max	2.0 max	1.0 max	0.045 max	0.030 max	17.00 – 19.00	0.10 max	9.00 – 12.00	5(C+N) – 0.70 max
SS 321H	0.04 – 0.10	2.0 max	1.0 max	0.045 max	0.030 max	17.00 – 19.00	0.10 max	9.00 – 12.00	4(C+N) – 0.70 max

SS 321 and 321H Welded Pipes Mechanical Properties

Density	Melting Point	Tensile Strength	Yield Strength (0.2%Offset)	Elongation
8.0 g/cm3	1457 °C (2650 °F)	Psi – 75000, MPa – 515	Psi – 30000, MPa – 205	35 %

If You Are Looking To Buy High Quality

We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.

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Why Choose 321 and 321H Stainless Steel Welded Pipes from Bulan Pipes and Tubes?

Choosing Stainless Steel 321 and 321H Welded Pipes guarantees excellent corrosion resistance, high strength, and durability. Designed for diverse industrial applications, it delivers reliable performance in tough environments while maintaining competitive pricing for cost-effective solutions.

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Largest 321 and 321H Stainless Steel Welded Pipes Supplier in Indonesia, Jakarta

Bulan Pipes and Tubes, a leading manufacturer and supplier of Stainless Steel 321 and 321H Welded Pipes in Indonesia, Jakarta, offers a comprehensive range of high-quality pipes and tubing suitable for various industrial applications. Our extensive inventory and commitment to exceptional service make us a trusted choice for regional products.

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321 and 321H Stainless Steel Welded Pipe Sizes

NB Sizes	Sch 5	Sch 10	Sch 40	Sch 80	Sch 160
1/8″	✓	✓	✓	✓
1/4″	✓	✓	✓	✓
3/8″	✓	✓	✓	✓
1/2″	✓	✓	✓	✓	✓
3/4″	✓	✓	✓	✓	✓
1″	✓	✓	✓	✓	✓
1 1/4″	✓	✓	✓	✓	✓
1 1/2″	✓	✓	✓	✓	✓
2″	✓	✓	✓	✓	✓
2 1/2″	✓	✓	✓	✓	✓
3″	✓	✓	✓	✓	✓
4″	✓	✓	✓	✓	✓
5″	✓	✓	✓	✓
6″	✓	✓	✓	✓

Physical Properties of SS 321 and 321H Welded Pipes

Grade	Density (kg/m3)	Elastic Modulus (GPA)	Mean Co-eff of Thermal Expansion (µm/m/°C)			Thermal Conductivity (W/m.K)		Specific Heat 0-100°C (J/kg.K)	Elec Resistivity (nΩ.m)
			0-100°C	0-315°C	0-538°C	At 100°C	At 500°C
321 and 321H	8027	193	16.6	17.2	18.6	16.1	22.2	500	720

Types of 321 and 321H Stainless Steel Welded Pipes

Are Custom Sizes Available for 321 and 321H Stainless Steel Welded Pipes?

We offer custom sizes for Stainless Steel 321 and 321H Welded Pipes to meet your specific needs. Our dedicated team at Bulan Pipes and Tubes provides tailored solutions for all your piping and tubing requirements. For more information, contact us at sales@bulanpipes.id.

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321 and 321H Welded Stainless Steel Pipes are extensively used in applications where thermal resistance, protection from corrosion, and mechanical stability are required. Common uses involve pharmaceutical factories, petrochemical processing, and oil & gas pipelines, where reliable and safe fluid or gas transfer is paramount. Intergranular corrosion resistance qualifies them for use in aircraft exhaust, heat exchangers, boilers, and pressure vessels. They also work very well for power applications and marine use where exposure to severe conditions is ongoing. With successful long-term performance, these pipes are relied upon in both normal and harsh service conditions.