Yuhong Group Co.,Ltd
| Size Range | 1/2"–24" OD |
| Standard | ASTM B725 / ASME SB725 |
| Payment Terms | L/C, T/T |
| Product Type | Welded Pipe |
| NDT | UT, RT, PT, PMI |
| Manufacturing | Forming + Welding + Heat Treatment |
| Material Grade | UNS N04400 / Monel 400 |
| Delivery Time | 20-80 Days |
| Packaging Details | Ply-wooden Case /Iron Case/ Bundle with plastic Cap |
| Pipe End | Plain End / Beveled End |
| Supply Ability | 300 TONS / MONTH |
| Material Type | Nickel-Copper Alloy |
| Brand Name | YUHONG |
| Place of Origin | CHINA |
| Model Number | ASME SB725 UNS N04400 |
| Certification | ABS, GL, DNV, NK, PED, AD2000, GOST9941-81, CCS, ISO 9001-2008 |
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Product Specification
| Size Range | 1/2"–24" OD | Standard | ASTM B725 / ASME SB725 |
| Payment Terms | L/C, T/T | Product Type | Welded Pipe |
| NDT | UT, RT, PT, PMI | Manufacturing | Forming + Welding + Heat Treatment |
| Material Grade | UNS N04400 / Monel 400 | Delivery Time | 20-80 Days |
| Packaging Details | Ply-wooden Case /Iron Case/ Bundle with plastic Cap | Pipe End | Plain End / Beveled End |
| Supply Ability | 300 TONS / MONTH | Material Type | Nickel-Copper Alloy |
| Brand Name | YUHONG | Place of Origin | CHINA |
| Model Number | ASME SB725 UNS N04400 | Certification | ABS, GL, DNV, NK, PED, AD2000, GOST9941-81, CCS, ISO 9001-2008 |
| High Light | ASME SB725 Monel 400 welded pipe ，UNS N04400 nickel alloy pipe ，Monel 400 pipe for marine projects | ||
ASME SB725 UNS N04400 Monel 400 Nickel Copper Alloy Welded Pipe
ASME SB725 UNS N04400 welded pipe is a nickel-copper alloy pipe manufactured from Monel 400 / UNS N04400 material.
The product is designed for piping systems where a nickel-copper alloy is specified for corrosive service and mechanical applications. ASTM B725 covers welded pipe made from UNS N04400 and specifies supply in welded and annealed or welded and stress-relieved conditions.
The pipe can be supplied with customized outside diameter, wall thickness, length, pipe end configuration, heat treatment condition, and inspection requirements according to the applicable standard and project specification.
Material Standard: ASME SB725 / ASTM B725
Material Grade: UNS N04400
Alloy: Monel 400
Material Type: Nickel-Copper Alloy
Product Type: Welded Pipe
Manufacturing: Forming + Welding + Heat Treatment
ASTM B725 specifically covers welded nickel and nickel-copper alloy pipe, including UNS N04400. The standard covers pipe intended for general corrosive service and mechanical applications.
UNS N04400 is commonly known as Monel 400, a nickel-copper alloy.
The material composition is characterized by a high nickel content and a copper range of approximately 28.0–34.0%, with other elements controlled according to the applicable specification. The current product page lists nickel at ≥63.0% and copper at 28.0–34.0%.
| Element | UNS N04400 Requirement |
|---|---|
| Ni | ≥ 63.0% |
| Cu | 28.0–34.0% |
| Fe | ≤ 2.5% |
| Mn | ≤ 2.0% |
| Si | ≤ 0.5% |
| C | ≤ 0.30% |
| S | ≤ 0.024% |
The exact acceptance values should always follow the applicable edition of ASTM B725 / ASME SB725 and the purchase specification.
Nickel-copper alloy strip is formed into a cylindrical pipe shape with controlled dimensions.
The longitudinal seam is welded using a controlled welding process suitable for nickel-copper alloy.
The ASTM B725 product is specifically a welded pipe, distinguishing it from seamless UNS N04400 pipe products covered by other ASTM/ASME specifications.
According to the applicable supply condition, the pipe may be supplied as:
The specific heat treatment condition should be stated in the purchase order and verified against the applicable specification.
The current product information lists the following available range:
| Parameter | Specification |
|---|---|
| Standard | ASTM B725 / ASME SB725 |
| Grade | UNS N04400 |
| Alloy | Monel 400 |
| Pipe Type | Welded |
| OD | 1/2"–24" |
| Wall Thickness | SCH 5S to SCH XXS |
| Length | SRL / DRL / Cut Length |
| Pipe End | Plain End / Beveled End |
| NDT | UT / RT / PT / PMI |
The listed OD and schedule range is based on the current product data; the actual available size should be confirmed against the applicable B725 dimensional requirements and project specification.
ASTM B725 also identifies Schedule 5S, 10S and 40S through 30-inch nominal pipe sizes within its scope, with other dimensions possible when the specification requirements are met.
For the product page, I recommend not mixing standard minimum values with generic “industry reference values.”
The current page gives the following reference for annealed material:
| Condition | Tensile Strength | Yield Strength | Elongation |
|---|---|---|---|
| Annealed | ≥480 MPa | ≥195 MPa for OD ≤127 mm | ≥35% |
| Annealed | ≥480 MPa | ≥170 MPa for OD >127 mm | ≥35% |
| Stress Relieved | ≥585 MPa | ≥380 MPa | ≥15% |
These values are presented on the existing product page, but for the final website I recommend labeling them clearly as ASME SB725 specified mechanical requirements, after checking the exact applicable edition and product size.
Monel 400 is widely associated with marine and seawater-related equipment because of its nickel-copper composition and corrosion behavior.
Potential applications include:
However, actual material suitability should be determined according to seawater chemistry, temperature, velocity, oxygen content and design conditions, rather than simply stating that the alloy is suitable for all marine environments.
UNS N04400 can be considered for specific reducing and corrosive chemical environments.
Potential applications include:
The existing product information specifically identifies HF alkylation, chemical processing and marine engineering among the target applications.
For oil and gas projects, the product can be positioned around corrosive-service piping rather than simply saying “oil and gas pipe.”
Potential applications include:
For sour service or other highly specific oil & gas conditions, material selection should be verified against the applicable project specification and sour-service requirements.
Available inspection options can include:
Depending on the purchase specification:
The existing product data lists UT, RT, PT and PMI as available NDT/inspection options.
Available configurations:
The final surface condition can be specified according to:
For nickel alloy welded pipe, surface and weld-area inspection requirements should be stated separately from the general pipe surface condition.
The manufacturing and inspection process can include:
The inspection scope should be matched to the applicable ASME SB725 requirements and customer purchase order.
Company Details
Business Type:
Manufacturer,Distributor/Wholesaler,Importer,Exporter,Trading Company,Seller,Other
Year Established:
2007
Total Annual:
50M-70M
Employee Number:
50~850
Ecer Certification：
Verified Supplier
Yuhong Group is one of the large scale group company in China, more than 35 years experience in the international market, providing high-quality services to over 3000 customers, end user which like Aramco, Petrobras, Pemex, Petronas, Ecopetro, Petroecuador, …. till now Yuhong Grou... Yuhong Group is one of the large scale group company in China, more than 35 years experience in the international market, providing high-quality services to over 3000 customers, end user which like Aramco, Petrobras, Pemex, Petronas, Ecopetro, Petroecuador, …. till now Yuhong Grou...
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