Custom 16K Steel Flange

16K Steel Flange Manufacturers

JIS B2220 16K Steel Flanges are medium-to-high pressure piping components designed in strict accordance with Japanese Industrial Standards. At Jiangyin Zhonghai Precision Machinery Co., Ltd., we leverage our full-scale manufacturing integration to produce 16K flanges that go beyond geometric compliance.

Through our internal forging process, we optimize metal grain flow, ensuring that our 16K series exhibits superior fatigue life and sealing stability under rated pressures exceeding 1.6 MPa (16 bar). Whether you require SOP (Slip-on Plate), SOH (Slip-on Hub), or WNH (Welding Neck Hub) types, Zhonghai delivers reliable solutions ranging from 1/2" to 60", including oversized non-standard components up to 4 meters.

Core Advantages
·Controlled In-house Production: With integrated forging, heat treatment, CNC machining, and testing facilities, we ensure every 16K flange maintains structural integrity under fluctuating pressure loads.
·Authoritative Certification: Our facilities are ISO 9001 certified and hold PED (EU Pressure Equipment Directive) and TS (Special Equipment License) qualifications, meeting the highest global safety and regulatory standards.
·Extreme Size Capability: We are among the few manufacturers capable of producing massive flanges up to 4 meters in diameter and 10 tons in weight, catering to heavy-duty industrial infrastructure.
·Rapid Customization: Beyond standard catalogs, we specialize in "Print-to-Product" services. Provide us with your critical parameters (OD, ID, PCD, thickness), and our technical team will provide an optimized manufacturing assessment and quote.

Product Features
·Superior Material Consistency: Strictly adhering to JIS grades (e.g., SS400, S25C, SUS304, SUS316), our internal heat treatment ensures uniform hardness and tensile strength across the entire batch.
·High-Precision Sealing Faces: Utilizing advanced CNC lathes, we achieve precise surface roughness for RF or FF faces, significantly enhancing the sealing performance with gaskets.
·Rigorous Inspection: To ensure 16K pressure safety, we offer non-destructive testing (UT, MT, or PT) upon request to verify the absence of cracks, inclusions, or porosity.
·Protective Surface Finishes: Options include anti-rust oil, black/yellow paint, electro-galvanizing, or hot-dip galvanizing for various corrosive environments.

Applications
JIS 16K steel flanges are the preferred choice for sectors with specific pressure requirements:
·Japanese Standard Engineering: Ideal for shipbuilding, machinery manufacturing, and chemical plants using Japanese design specs.
·Heavy Machinery Interfaces: High-strength connections for large hydraulic systems, compressors, and pump sets.
·Marine & Offshore: Used in ballast systems, fire-fighting lines, and fuel transfer piping.
·Power Generation: Heat exchanger ports and auxiliary steam line connections.

Item Technical Specifications
Standard JIS B2220
Pressure Rating 16K
Flange Types SOP (Slip-on Plate), SOH (Slip-on Hub), WNH (Welding Neck), BL (Blind)
Size Range DN10 – DN1500 (1/2" – 60"); Custom sizes up to 4m
Materials Carbon Steel: SS400, S20C, S25C, SF440A; Stainless Steel: SUS304/L, SUS316/L
Manufacturing Internal Forging + Heat Treatment + CNC Machining
Max Component Weight 10 Tons
Facing Types Raised Face (RF), Flat Face (FF)
Certifications ISO 9001, PED, TS (Special Equipment License)

EXPERTS IN FORGED AND MACHINED FLANGES

[ WHO WE ARE ]

About Us .

Jiangyin Zhonghai Precision Machinery Co., Ltd.
  • Established

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  • Employees

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  • Tons / Month Capacity

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01.
Specification Coverage
Our production range spans sizes from 1/2” to 60”, with single-piece weights up to 10 tons and maximum dimensions reaching 4 meters.
02.
Applicable Scenarios
This comprehensive scope ensures reliable solutions for both standard and non-standard flange applications.
03.
Introduce Us
We are China 16K Steel Flange Manufacturers and Custom 16K Steel Flange Factory. With complete in-house forging, heating, CNC turning, drilling, and inspection lines, we handle both volume production and complex machined parts.

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16K Steel Flange Industry knowledge

Why Does 16K Steel Flange Perform Excellently in High-Pressure and High-Temperature Environments?

In various industrial sectors, steel flanges play a crucial role as vital components connecting pipelines and equipment. With technological advancements, the types and specifications of steel flanges have proliferated. Among them, 16K steel flanges have become the preferred choice in numerous engineering projects due to their outstanding performance and reliability. So, what makes 16K steel flanges unique? How do they provide support in complex industrial applications?

1. Definition and Characteristics of 16K Steel Flanges

A 16K steel flange is a flange made of 16K steel, commonly used to connect various pipelines, equipment, and valves, serving both connection and sealing functions. 16K steel, as a carbon steel alloy, possesses excellent strength, high-temperature resistance, and corrosion resistance, performing particularly well in high-pressure environments. Compared to ordinary carbon steel flanges, 16K steel flanges have significant advantages in withstanding high pressure, high temperature, and corrosive media.

The main characteristics of 16K steel include:

  • High Strength and Toughness: 16K steel flanges possess extremely high tensile strength and impact toughness, enabling them to adapt to the requirements of high-load and high-pressure environments.
  • Excellent Corrosion Resistance: Due to the addition of various alloying elements, 16K steel exhibits strong corrosion resistance, making it suitable for industries such as chemical, petroleum, and natural gas.
  • High Temperature Resistance: 16K steel flanges can operate for extended periods in high-temperature environments, making them widely used in petrochemical and energy industries.

2. Application Areas of 16K Steel Flanges

16K steel flanges are widely used in various industrial fields, especially in environments requiring flanges to withstand high pressure, high temperature, and corrosive media.

Oil and Gas Industry:

16K steel flanges are commonly used in oil and natural gas transportation pipelines, particularly in high-pressure and high-temperature environments, effectively ensuring the stability and sealing of pipeline connections.

Chemical Industry:

In chemical reactions, where the temperature and corrosiveness of the media are extremely high, the corrosion resistance of 16K steel flanges makes them an ideal choice for chemical engineering.

Energy Industry:

In the energy sector, especially in thermal power plants and nuclear power plants, 16K steel flanges are widely used in high-temperature and high-pressure pipeline systems to ensure system safety and stability.

Metallurgical Industry:

The high-temperature and high-pressure conditions in the metallurgical industry place extremely high demands on flange materials. The strength and corrosion resistance of 16K steel flanges make them crucial infrastructure connection components.

3. Key Factors to Consider When Selecting 16K Steel Flanges

When choosing a suitable 16K steel flange, it's essential to consider not only the material but also several other key factors to ensure it meets specific operating requirements.

  • Standards and Certifications: Ensuring the selected flange complies with relevant standards such as GB, ASME, ASTM, JIS, and EN is crucial for guaranteeing flange quality and suitability. Simultaneously, choosing a certified manufacturer is recommended. Jiangyin Zhonghai Precision Machinery Co., Ltd. can provide ISO 9001, PED, TUV, TS, and other certifications, ensuring high product quality and safety.
  • Flange Specifications and Dimensions: Select the appropriate flange size based on pipeline specifications and design requirements. Our company offers various sizes from 1/2'' to 60'' and can provide customized flanges up to 4 meters in length according to customer needs.
  • Operating Environment: Consider the flange's operating temperature, pressure, and media type. 16K steel flanges are suitable for high-temperature, high-pressure, and corrosive media environments, but different applications may require flanges with different temperature and corrosion resistance grades.
  • Manufacturing Precision: The connection precision of the flange directly affects the system's sealing performance. Our company has complete in-house machining, forging, CNC turning, drilling, and inspection lines, ensuring that every flange has a high degree of precision.

4. Jiangyin Zhonghai Precision Machinery Co., Ltd.: Why Choose Us?

As a company specializing in the manufacture of precision flanges and forgings, Jiangyin Zhonghai Precision Machinery Co., Ltd. has accumulated extensive experience in the production of 16K steel flanges. Our advantages include:

  • Comprehensive Service Capabilities: We not only provide standard 16K steel flanges but also offer complete customization according to customer drawings. Whether it's small-batch production or complex machined parts, we can provide perfect solutions.
  • High-Quality Assurance: Our company is ISO 9001 certified and has obtained multiple certifications such as PED, TUV, and TS, ensuring that product quality meets international standards.
  • Strong Production Capacity: We possess complete in-house forging, heating, CNC turning, drilling, and inspection production lines, capable of meeting the production needs of flanges ranging from 1/2'' to 60'', with a maximum single-piece weight of 10 tons.
  • Customer-First Service Philosophy: We always adhere to the principle of "Quality First, Customer Supreme," committed to providing customers with high-quality, high-efficiency products and services.

5. Frequently Asked Questions (FAQ)

Q1: What is the difference between 16K steel flanges and other steel flanges?

A1: 16K steel flanges are made of 16K steel, which has stronger high-temperature resistance, corrosion resistance, and tensile strength, making them particularly suitable for high-pressure, high-temperature, and highly corrosive working conditions. Compared to other carbon steel flanges, 16K steel flanges are more suitable for demanding industrial environments.

Q2: How do I choose the right 16K steel flange size for my project?

A2: When selecting flange size, you first need to understand the outer diameter and pressure rating of the pipeline. It is recommended to select flange sizes that conform to relevant standards based on pipeline design specifications and working conditions. Our company offers a variety of sizes from 1/2'' to 60'' and supports custom production.

Q3: What is the production lead time for 16K steel flanges?

A3: The production lead time typically depends on the flange size, complexity, and order quantity. Standard flanges have a shorter production lead time, while custom or large flanges may take longer. We will provide a specific delivery time based on customer requirements.

Q4: How do you ensure the quality of 16K steel flanges?

A4: Our company has a complete internal quality inspection system. All products undergo rigorous quality control, including dimensional inspection, material analysis, pressure testing, and other processes, ensuring the high quality standards of each flange.