Hunan Dinghan New Material Technology Co., LTD
| Payment Terms | T/T |
| Supply Ability | Negotiable |
| Delivery Time | (Sample order) 7 days |
| Packaging Details | According to customers' requests |
| Product Name | UNS N07718 Nickel Alloy Seamless Pipe – API 6A Inconel 718 Tubes Manufacturer |
| Grade | Alloy 718 |
| Size | 1/8” – 12” (custom dimensions available) |
| Material | Nickel Alloys |
| Type | Seamless |
| Application | Aerospace,Chemical Processing,Automotive Manufacturing |
| Brand Name | DINGSCO |
| Model Number | According to customers' requirements |
| Certification | ISO 9001:2015,PED 2014/68/EU,API 6A,API-20B,TSG,NORSOK |
| Place of Origin | China |
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Product Specification
| Payment Terms | T/T | Supply Ability | Negotiable |
| Delivery Time | (Sample order) 7 days | Packaging Details | According to customers' requests |
| Product Name | UNS N07718 Nickel Alloy Seamless Pipe – API 6A Inconel 718 Tubes Manufacturer | Grade | Alloy 718 |
| Size | 1/8” – 12” (custom dimensions available) | Material | Nickel Alloys |
| Type | Seamless | Application | Aerospace,Chemical Processing,Automotive Manufacturing |
| Brand Name | DINGSCO | Model Number | According to customers' requirements |
| Certification | ISO 9001:2015,PED 2014/68/EU,API 6A,API-20B,TSG,NORSOK | Place of Origin | China |
| High Light | API 6A Certified Nickel Alloy Seamless Pipe ，High Mechanical Strength Inconel 718 Tubes ，Corrosion Resistance UNS N07718 Pipe | ||
UNS N07718 Nickel Alloy Seamless Pipe – API 6A Inconel 718 Tubes Manufacturer
The API 6A / UNS N07718 Nickel Alloy Seamless Pipe is manufactured from high-performance Nickel Alloy 718 (Inconel 718), a precipitation-hardened nickel-chromium alloy widely recognized for its outstanding strength, corrosion resistance, and fatigue resistance. Designed to meet API 6A requirements, these seamless pipes ensure reliable performance in high-pressure, sour service, and extreme offshore environments.
API 6A Certified – Complies with international standards for oilfield equipment and critical service environments.
High Mechanical Strength – Retains superior tensile and yield strength up to 700°C (1290°F).
Corrosion Resistance – Excellent resistance against sulfide stress cracking, chloride-induced corrosion, and sour gas.
Seamless Construction – Provides defect-free internal structure with uniform wall thickness and higher pressure resistance.
Extended Service Life – Withstands cyclic loading, extreme pressure, and aggressive media without degradation.
| Specification | Details |
|---|---|
| Material Grade | Nickel Alloy 718 (UNS N07718 / Inconel 718 / W.Nr. 2.4668) |
| Standards | API 6A, ASTM B983, NACE MR0175 / ISO 15156 |
| Form | Seamless Pipe / Tube |
| Size Range | 1/8” – 12” (custom dimensions available) |
| Density | 8.19 g/cm³ |
| Melting Range | 1260–1336 °C (2300–2440 °F) |
| Tensile Strength | ≥ 1240 MPa |
| Yield Strength | ≥ 1030 MPa |
| Elongation | ≥ 12% |
| Hardness | ≤ 44 HRC (as per API 6A requirements) |
| Condition | Solution annealed and age-hardened |
| Certification | API 6A, EN 10204 3.1 / 3.2, full traceability |
Oil & Gas Exploration – High-pressure piping for subsea systems, wellhead equipment, and sour gas service.
Petrochemical Industry – Seamless pipes for heat exchangers, reactors, and chemical process systems.
Power Generation – High-strength tubing for turbines, boilers, and steam lines.
Aerospace & Defense – Nickel alloy seamless pipes for engine components and structural parts.
Marine & Offshore Engineering – Corrosion-resistant pipes for offshore platforms and seawater systems.
| Grade | UNS | Density | Tensile Strength (MPa min) | Yield Strength (MPa min) | Reduction of Area min (%) | Elongation min (%) | Hardness (HRC) |
| INCONEL 718 | N07718 | 8.19 | 1275MPa min | 1034MPa min | 15% | 12% min | HRC 35-40 |
Chemical Composition(%):
| Ni | Cr | Fe | C | Mn | S | Si |
| 50.0-55.0 | 17.0-21.0 | Remainder | 0.08max | 0.35max | 0.015max | 0.35max |
| B | P | Mo | Ti | Al | Cu | Co |
| 0.006max | 0.015max | 2.8-3.3 | 0.65-1.15 | 0.2-0.8 | 0.3max | 1.0max |
| Grade | UNS | DENSITY | EN/DIN W.Nr | CONDITION |
| Nickel 200 | N02200 | 8.89 | 2.4066 | Annealed |
| Nickel 201 | N02201 | 8.89 | 2.4068 | Annealed |
| MONEL 400 | N04400 | 8.80 | 2.4360 | Annealed |
| MONEL K-500 | N05500 | 8.44 | 2.4375 | Aged |
| INCOLOY 825 | N08825 | 8.14 | 2.4858 | Annealed |
| INCOLOY 925 | N09925 | 8.08 | - | Aged |
| INCOLOY 926 | N08926 | 8.1 | 1.4529 | Sol.Annealed |
| INCOLOY A-286 | S66286 | 7.94 | - | - |
| INCOLOY 800 | N08800 | 7.94 | 1.4876 | Annealed |
| INCOLOY 800H | N08810 | 7.94 | 1.4958 | Annealed |
| INCOLOY 800HT | N08011 | 7.94 | 1.4959 | Annealed |
| ALLOY 20 | N08020 | 8.08 | 2.4660 | Annealed |
| ALLOY 28 | N08028 | 8.0 | 1.4563 | Annealed |
| NIMONIC 80A | N07080 | 8.19 | 2.4952 | Aged |
| NIMONIC 901 | N09901 | 8.14 | 2.4662 | - |
| INCONEL 625 | N06625 | 8.44 | 2.4856 | Annealed |
| INCONEL 718 | N07718 | 8.19 | 2.4668 | Aged |
| INCONEL X-750 | N07750 | 8.28 | 2.4669 | Aged |
| INCONEL 600 | N06600 | 8.47 | 2.4816 | Annealed |
| INCONEL 601 | N06601 | 8.11 | 2.4851 | - |
| HASTELLOY C-276 | N10276 | 8.87 | 2.4819 | Annealed |
| HASTELLOY C-22 | N06022 | 8.69 | 2.4602 | Sol.Annealed |
| HASTELLOY C-4 | N06455 | 8.64 | 2.4610 | Sol.Annealed |
| HASTELLOY B-2 | N10665 | 9.22 | 2.4617 | Annealed |
| HASTELLOY B-3 | N10675 | 9.22 | 2.4600 | Annealed |
| HASTELLOY X | N06002 | 8.22 | 2.4665 | Aged |
| F44 | S31254 | 8.0 | 1.4547 | Annealed |
| F51 | S31803 | 7.8 | 1.4462 | Solution |
| F53 | S32750 | 7.8 | 1.4410 | Solution |
| F55 | S32760 | 7.8 | 1.4501 | Solution |
Company Details
Business Type:
Manufacturer,Exporter,Seller
Year Established:
1998
Total Annual:
70 million-100 million
Employee Number:
50~60
Ecer Certification：
Verified Supplier
Hunan Dinghan New Material Technology Co.,Ltd. (DINGSCO) specialized in Nickel Based Corrosion Resistant and High Temperature alloys products which used in the world’s most technically demanding industries and applications. We have complete advanced technology facilities to produc... Hunan Dinghan New Material Technology Co.,Ltd. (DINGSCO) specialized in Nickel Based Corrosion Resistant and High Temperature alloys products which used in the world’s most technically demanding industries and applications. We have complete advanced technology facilities to produc...
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