Name: ASME SA376 TP347H Seamless Austenitic Steel Pipe for High-Temperature Service
Brand: Yuhong Group Co.,Ltd
SKU: ASME SA376 TP347H
Price: 150000.00 USD
Availability: InStock

Yuhong Holding Group Co.,LTD

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ASME SA376 TP347H Seamless Austenitic Steel Pipe for High-Temperature Service

Product Details:

Place of Origin:	China
Brand Name:	YUHONG
Certification:	ABS, GL, DNV, NK, PED, AD2000, GOST9941-81, CCS, ISO 9001-2008
Model Number:	ASME SA376 TP347H

Payment & Shipping Terms:

Minimum Order Quantity:	1000KGS
Price:	Negotiable
Packaging Details:	Ply-wooden Case /Iron Case/ Bundle with plastic Cap
Delivery Time:	Depends on quantity
Payment Terms:	,L/C,T/T
Supply Ability:	Accdording to customer's request

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Detailed Product Description

Product Name:	Seamless Austenitic Steel Pipe	Specification:	ASME SA376/ ASTM A376
Material:	TP347H (UNS S34709)	Surface:	Pickling And Annealing
Type:	Seamless	Tolerance:	±1%
End Sides:	Plain Ends Or Beveled Ends	Size:	Customized
Application:	High Temperature, High Pressure, Corrosive Environment...
Highlight:	ASME SA376 TP347H seamless steel pipe , austenitic steel pipe high-temperature service , stainless steel seamless pipe with warranty

YUHONG brand goods have been already exported to more than 85 countries With more than 35 years' experience, because of strict quality control policy, excellent sales service, delivery on time. YUHONG won more and more new clients and got more and more repeat orders from old clients, in YUHONG People's mind: Quality is First Important!

ASME SA376 TP347H Seamless Austenitic Steel Pipe for High-Temperature Service

This specification covers seamless austenitic steel pipe intended for high-temperature service. Among the grades covered are H grades and nitrogen grades that are specifically intended for high-temperature service.

The "H" in TP347H denotes its suitability for high-temperature applications. Through the addition of the stabilizing element niobium (Nb) and controlled carbon content, it significantly enhances the material's creep strength and long-term microstructural stability at elevated temperatures. This seamless pipe exhibits excellent resistance to high-temperature oxidation and corrosion, making it widely used in power station boilers, superheaters, reheaters, and high-temperature pipelines in the petrochemical industry.

ASME/ASTM

EN/DIN

JIS

ISO

TP347H

(UNS S34709)

X8CrNiNb19-10 (1.4912)

SUS 347H TB / TP

07Cr18Ni11Nb

(347H)

X8CrNiNb19-10 (1.4912)

1.Chemical & Mechanical Properties

ASME SA376 TP347H Chemical Composition (%)
C	Mn	P	S	Si	Cr	Ni	Co
0.04-0.10	≤2.00	≤0.045	≤0.030	≤0.75	17.0~19.0	9.0~13.0	1.10 ≥Co≥ 0.8*C

Mechanical Properties

Tensile Strength	Yield Strength	Elongation	Transverse
≥ 515MPa	≥ 205MPa	≥ 35%	≥ 25%

2. Key Adventages

Exceptional High-Temperature Strength and Creep Resistance

Controlled higher carbon content (the "H" grade) and the addition of niobium (Nb) as a stabilizing element provide outstanding creep rupture strength and long-term stress rupture strength under prolonged service at elevated temperatures (typically above 525°C), making it an ideal choice for high-pressure boiler superheater and reheater tubes.

Superior High-Temperature Oxidation and Corrosion Resistance

The high chromium (Cr) and nickel (Ni) content promotes the formation of a stable, dense chromia oxide layer, granting excellent resistance to oxidation and corrosion in high-temperature flue gas and steam environments, resulting in extended service life.

Excellent Microstructural Stability and Resistance to Sensitization

Niobium (Nb) preferentially combines with carbon (C) to form stable niobium carbides (NbC). This effectively prevents chromium carbide precipitation at grain boundaries, thereby entirely eliminating the risk of intergranular corrosion due to "sensitization" after welding or exposure to high-temperature service.

Reliability and Safety of Seamless Manufacturing

Manufactured using a seamless process, it removes the longitudinal weld seam—a potential weak point. The pipe wall has uniform thickness and continuous material structure, ensuring superior structural integrity and higher safety reliability under extreme conditions of high temperature and pressure.

3. Key Applications

Power Station Boilers & Power Generation Systems
Petrochemical & Refining Industry
Other Industrial Heating Systems & High-Temperature Equipment
Nuclear Power Industry (Specific Applications)

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Packing and Shipping:

Product Packaging:

All pipes are securely packed in wooden boxes or bundles with plastic caps to avoid damage during transit.
Each box/bundle is strapped with metallic strips for added strength.
Boxes/bundles are clearly labeled with product details and shipping marks for easy identification.

Shipping:

We offer worldwide shipping to any destination as per customer requirements.
We work with trusted shipping companies to ensure timely delivery and e handling of products.
Customers can choose from various shipping options including air, sea, or land transport.
Shipping costs may vary depending on the shipping location and mode of transport.