At Nascent Pipe & Tubes, we take immense pride in offering premium-quality Stainless Steel 347H Tubes that meet global standards for performance, durability, and resistance. Engineered to operate efficiently in high-temperature environments, our SS 347H tubes are widely used across petrochemical plants, thermal processing, and power generation facilities. These tubes are manufactured as per the ASTM A213 TP347H standard and carry the UNS S34709 designation, ensuring they are suitable for elevated temperature services.
The high carbon variant of Stainless Steel 347, the 347H alloy is stabilized with columbium (niobium) for enhanced resistance to intergranular corrosion. The increased carbon content improves high-temperature strength, making these tubes ideal for heat exchangers, superheaters, and boiler tubes. Our ASTM A213 TP347H tubes are recognized under the universal standard known as ASME SA213 and are known for their superior mechanical strength and oxidation resistance.
Stainless Steel 347H Tubes Manufacturers, Stainless Steel 347H Tubes Suppliers, Stainless Steel 347H Tubes Stockists, Stainless Steel 347H Tubes Exporters
Stainless Steel 347H Tubes Manufacturers in India, Stainless Steel 347H Tubes Suppliers in India, Stainless Steel 347H Tubes Stockists in India, Stainless Steel 347H Tubes Exporters in India
The corrosion resistance of ASTM A213 TP347H stainless steel tubes makes them an excellent alternative to 304H or 321H in oxidizing environments. Moreover, the high carbon content combined with the niobium stabilization eliminates carbide precipitation during welding, maintaining the tube's strength and toughness. Whether for high-pressure steam lines, reheater tubes, or heat exchangers in power plants, our 347H stainless steel tubes deliver long-term performance with minimal maintenance.
Stainless Steel 347H Tubes Manufacturers In Mumbai, Stainless Steel 347H Tubes Suppliers In Mumbai, Stainless Steel 347H Tubes Stockists In Mumbai, Stainless Steel 347H Tubes Exporters In Mumbai
As a trusted manufacturer and exporter, Nascent Pipe & Tubes guarantees dimensional accuracy, timely dispatch, and competitive pricing. Our team is committed to meeting customer specifications and delivering materials that meet both Indian and international standards.
Specification of Stainless Steel 347H Seamless Tubes
Stainless Steel Pipe Specification : ASTM A312, A358 / ASME SA312, SA358
SS Tube Specification : ASTM A213, A269, A249, A511, A554 / ASME SA213, SA269, SA249, SA511, SA554
Pipe Size :1/8” NB to 24” NB, 1/4” OD to 24” OD sizes.
Tube Size :1/2" OD to 8" OD.
Thickness Range :0.3mm – 50 mm, SCH 5, SCH10, SCH 40, SCH 80, SCH 80S, SCH 160, SCH XXS, SCH XS
Type :Seamless / ERW / Welded / Fabricated Tubes
Form : Round, Square, Rectangular, Oval, Hydraulic Etc
Length :Single Random, Double Random & Required Length
End : Plain End, Beveled End, Treaded
End Protection : Plastic Caps
Outside Finish :2B, No.4, No.1, No.8 Mirror Finish for Stainless Steel Tubes, Finish as per customer Requirements
Delivery Condition : Annealed and Pickled, Polished, Bright Annealed, Cold Drawn
Inspection, Test Reports :Mill Test Certificates, EN 10204 3.1, Chemical Reports, Mechanical Reports, PMI Test Reports, Visual Inspection Reports, Third Party Inspection Reports, NABL Approved Lab Reports, Destructive Test Report, Non Destructive Test Reports
Packing :Packed in Wooden Boxes, Plastic Bags, Steel Strips Bundled, or as per Customers Requests
Specials :Sizes and Specifications other than above can be manufactured on request
Chemical Composition of Stainless Steel 347H Seamless Tubes
| C | Mn | Si | P | S | Cr | Ni | N | |
|---|---|---|---|---|---|---|---|---|
| 347H | 0.07max | 2.0max | 0.75max | 0.045max | 0.03max | min: 18.0 max: 20.0 | min: 8.0 max: 10.5 | — |
Mechanical Properties Of Stainless Steel 347H Seamless Tubes
| Grade | Tensile Strength ksi (min) | Yield Strength 0.2% ksi (min) | Elongation % | Hardness (Brinell) MAX | Hardness (Rockwell B) MAX |
|---|---|---|---|---|---|
| 347H | 75 | 30 | 40 | 201 | 92 |
Physical Properties of Stainless Steel 347H Seamless Tubes
| SS 316 | ||||||
|---|---|---|---|---|---|---|
| Density lbm/in3 | Thermal Conductivity (BTU/h ft. °F) | Electrical Resistivity (in x 10-6) | Modulus of Elasticity (psi x 106 | Coefficient of Thermal Expansion (in/in)/ °F x 10-6 | Specific Heat (BTU/lb/ °F) | Melting Range (°F) |
| at 68°F: 0.285 | 9.4 at 212°F | 28.3 at 68°F | 28 | 9.4 at 32 – 212°F | 0.1200 at 68°F to 212°F | 2500 to 2590 |
Equivalent Grades Stainless Steel 347H Seamless Tubes
| STANDARD | WERKSTOFF NR. | UNS | JIS | EN |
|---|---|---|---|---|
| SS 347H | 1.4438 | S34700 | SUS 347H | X2CrNiMo18-15-4 |
Our Export
Domestic Area
| Mumbai | Ahmedabad | Bhopal | Bikaner | Pune |
| Delhi | Chennai | Visakhapatnam | Mangalore | Nagpur |
| Bangalore | Kolkata | Siliguri | Assam | Indore |
| Hyderabad | Surat | Nashik | Cochin | Thane |
| Faridabad | Rajkot | Aurangabad | Bhavnagar | Ranchi |
| Coimbatore | Mysore | Salem | Tirupur | Bikaner |
| Raipur | Bhubaneswar | Bhilai | Ankleshwar | Bhiwandi |
| Vadodra | Kochi |