EN 1.4845 Stainless Steel Welded Tube
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GNEE, as a professional supplier and manufacturer of stainless steel welded pipes, exports to more than 50 countries annually and has successfully supported over 70 engineering projects worldwide.
We supply 1.4845 (X8CrNi25-21 / 310S) austenitic heat-resistant stainless steel welded tubes, fully compliant with EN 10095, ASTM A312, and related standards. In many low-pressure, atmospheric environments operating at around 1000°C, 1.4845 welded tubes (EN 10217-7) can fully replace seamless tubes (EN 10216-5), while helping customers achieve 20%–30% cost savings.
We provide a complete service covering base material sourcing, filler metal selection, welding procedure development, and finished product inspection. Advanced automatic welding processes such as TIG (GTAW) or plasma welding are adopted. Welding is performed using AWS A5.14 ERNiCr-3 Inconel 82 filler wire, with a weld joint efficiency of 1.0.The weld zone exhibits mechanical properties and corrosion resistance almost identical to the base material. The product demonstrates excellent high-temperature oxidation resistance, creep resistance, and thermal fatigue resistance in the 600–1000°C range.
ASTM A312 TP310S stainless steel welded pipes are supplied in a solution-annealed condition, effectively eliminating internal stresses and ensuring excellent ductility for subsequent bending and fabrication processes.We supply 310S welded pipes in sizes ranging from Φ10 mm to Φ1200 mm and above, with wall thickness from 1.0 mm to 20 mm. Length can be customized according to customer requirements, typically 6 meters fixed or random lengths.
In addition, we provide EN 10204 3.1 material certificates. Upon request, we can also supply weld seam NDT reports (RT/UT) and Welding Procedure Specification / Procedure Qualification Records (WPS/PQR) to ensure compliance with international standards such as ASME and PED.
EN 10204 3.1 material certificates
Specification of 310S stainless steel pipe
| Product Name | 310s stainless steel pipe |
| Material | 300series |
| Technique | seamless pipe / welde pipe |
| Thickness | SCH10 - XXS |
| Diameter | DN10 - DN400 |
| Surface | polish and normal surface |
| Certifications | ISO/SGS/BV |
| MOQ | 500 kg |
| Price term | FOB / CIF /CFR /EXW |
| Payment term | T/T,L/C(30% deposit byT/T and 70% payment before delivery) |
| Delivery time | 5-10 days,Based on stock and order quantity |
| Sample | we could offer the sample for free charge but do not pay the cost of freight. |
| Note | We can produce other standard as the customers' requirement. |
Chemical composition of 310S Stainless Steel round pipe
| Chemical composition | C | Si | Mn | P | S | Ni | Cr | |
| ≤0.08 | ≤1.00 | ≤2.00 | ≤0.045 | ≤0.030 | 24-26 | 19.00~21.00 | ||
| Physical Characteristics | Hardness | Tensile strength(бb)(Mpa) | Yield Strengthσ0.2 (MPa) | |||||
| ≤201HBW;≤92HRB;≤210HV | 515-1035 | ≥205 | ||||||
Mechanical Properties of 310S stainless steel pip
| Grade | Tensile Strength ksi (min.) |
Yield Strength 0.2% Offset ksi (min.) |
Elongation - % in 50 mm (min.) |
Hardness (Brinell) MAX |
Hardness (Rockwell B) MAX |
| 310/310S | 75 | 30 | 40 | 217 | 95 |
What is the maximum service temperature for 1.4845 welded pipes?
Continuous service temperature: approximately 1050°C – 1100°C. Intermittent service temperature: approximately 1035°C. It maintains excellent resistance to scaling even at temperatures above 1000°C.
It is typically suitable for temperature environments of approximately 800°C or 900°C and above specifically, a range exceeding the effective upper service temperature limits of grades 304H and 321.
Can 1.4845 welded pipes undergo bending or flaring?
Yes. 1.4845 possesses excellent ductility. Provided that the welded pipe has undergone inline solution annealing, it can undergo secondary processing-such as bending, flaring, or swaging without cracking at the weld seam.
What is the difference between 1.4845 (310S) and 1.4833 (309S)?
1.4845 (310S): 25Cr-21Ni; offers higher heat resistance (up to 1100°C) and superior stability under cyclic heating conditions. 1.4833 (309S): 23Cr-13Ni; offers slightly lower heat resistance (approximately 1000°C) and is more competitively priced. If you require superior resistance to high-temperature oxidation, 1.4845 is the preferred choice.
Application of 310S stainless steel pipe
Furnace Parts
Oil Burner Parts
Heat Exchangers
Welding Filler Wire and Electrodes
Annealing Covers
Combustion Tubes
Fire Box Sheets
If you have requirements for the aforementioned items, you are welcome to place an order. GNEE maintains a substantial inventory of 310S stainless steel pipes for you to choose from.
Click to Get 310S Stainless Steel Prices
We provide the following inspections to ensure quality:
Eddy Current Testing: 100% coverage to detect weld porosity and cracks.
Hydrostatic Testing: Verifies the leak-tightness of the tubing under high pressure.
PMI Testing: Utilizes a spectrometer to 100% verify that nickel and chromium content meet specified standards.
High-Quality Export Packaging for Sea Freight
GNEE utilizes fumigation-free plywood cases for packaging.
Plastic caps are fitted to the tube ends to prevent dust ingress and mechanical damage.
The tube body features clear stenciling indicating the applicable standard, material grade, dimensions, and heat number.
