ASTM A249 TP304L Ss Welded Tube For Boiler
Manufacture：welded process,
Outside Diameter：12.7mm——127mm
Wall thickness：0.9mm——12.7mm
Length：6000mm、12000m or specified length as require
Payment：L/C or T/T
Delivery: 7-15 days after payment
Package: Bundles (hexagonal),Wooden Boxes,Crates (steel/wooden)
ASTM A249 TP304L welded tube for boiler introduction
ASTM A249 TP304L stainless steel welded pipe for boilers has an extremely low carbon content and does not require solution annealing or stabilization after welding. It has excellent resistance to wet steam corrosion and high temperature toughness, and is suitable for medium temperature, high pressure and intergranular corrosion sensitive environments of power station boilers, industrial boilers, and waste heat boilers.
ASTM A249 TP304L stainless steel welded pipe uses ER308L welding wire or E308L-16 welding rod (carbon ≤ 0.04%). The carbon content of the weld metal is consistent with that of the parent material, ensuring uniform corrosion resistance of the welded joint and better crack resistance than ordinary 304 welding materials.
ASTM A249 TP304L stainless steel welded pipe
What is the difference between TP304L stainless steel boiler tube and TP304?
TP304L is an ultra-low carbon type (C≤0.03%), which can significantly improve the resistance to intergranular corrosion without post-weld heat treatment, and is particularly suitable for harsh working conditions such as boilers with frequent welding and temperature fluctuations; while TP304 has a higher carbon content (C≤0.08%), and requires heat input control or solution treatment after welding to avoid sensitization, and has weaker resistance to intergranular corrosion.
In addition, TP304L has better resistance to wet steam corrosion and thermal fatigue when used for a long time below 650℃, and its elongation is ≥40% (higher than 30% of TP304).
TP304L low carbon austenitic boiler pipe Price
GNEE is a professional supplier of stainless steel welded pipes. We understand product parameters and industry application cases. If you need technical consultation or boiler piping system design support, please contact us for free corrosion condition analysis and customized quotation to provide long-life and high-reliability pipe solutions for your boiler equipment!
ASTM A249 TP304L Welded Tubes Technical Parameters
| Parameter | Specification |
|---|---|
| Standard | ASTM A249 / ASME SA249 (Welded Austenitic Steel Tubes for Boilers and Heat Exchangers) |
| Grade | TP304L (UNS S30403) - Ultra-low carbon (C ≤ 0.03%) austenitic stainless steel |
Dimensions & Tolerances
| Item | Range | Tolerances |
|---|---|---|
| Outer Diameter (OD) | 16–610 mm (0.63–24.0 in.) | ±0.5% of OD (ASTM A249)18 |
| Wall Thickness (WT) | 1.0–20 mm (0.04–0.79 in.) | ±10% of WT (ASTM A249)18 |
| Length | 6 m (20 ft) standard; custom lengths available | ±3 mm (±0.12 in.) for lengths ≤7.3 m (24 ft)18 |
Mechanical Properties
| Property | Value | Testing Standard |
|---|---|---|
| Tensile Strength | ≥485 MPa (70 ksi) | ASTM A370 |
| Yield Strength (0.2% Offset) | ≥170 MPa (25 ksi) | ASTM A370 |
| Elongation (50 mm gauge) | ≥40% | ASTM A370 |
| Hardness | ≤90 HRB | ASTM A370 |
ASME SA 249 TP 304L Stainless steel superheater tubes Manufacturer
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