ASME B16.5/API 6A Standard Threaded Forged Flanges
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Product Highlights
- Comprehensive Standard Compliance: Meets ASME B16.5, API 6A, ANSI, DIN, GB, JIS, GOST, and BSW standards.
- Diverse Material Options: Available in Carbon Steel, Stainless Steel, Alloy Steel, and DSS.
- Wide Size Range: Sizes available from 0.25 inches up to 56 inches and beyond.
- Multiple Flange Types: Offers WN, SO, BL, SW, PL, and THRD connection types.
- Customization Available: Custom materials and specific requirements are supported.
- Rigorous Quality Control: Includes physical/chemical inspection, loading checks, and recorded steps.
- Flexible Lead Time: 10-25 days standard; peak season one month, off-season within 15 workdays.
- OEM and ODM Services: Full OEM and ODM capabilities with dedicated R&D engineers.
Product Attributes
- Customization
- Available
- Standard
- ANSI, DIN, GB, JIS, GOST, BSW
- Type
- Threaded Connection Flange
- Material
- Carbon Steel
- Structure
- Flanges
- Connection
- Flanged
- Sealing Surface
- RF
- Manufacturing Way
- Forging
- Materials
- CS, Dss, Alloy Steel Killed Steel
- Lead Time
- 10-25days
- Color
- Metal Basic Color Grey Color Black
- Transport Package
- Plywood Case/Brandrith
- Specification
- TUV
- Trademark
- DHDZ
- Origin
- China
- HS Code
- 73079100
- Production Capacity
- 100000t/ Year
Product Images of ASME B16.5/API 6A Standard Threaded Forged Flanges
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Product Description
WNRF Flange Welding Neck Flange SORF Flange Blind flange


Since 1999,DHDZ forgings (Shanxi Donghuang Wind Power Flange Manufacturing Co.,Ltd) designs and manufactures flanges & forgings that deliver maximum efficiency, durability and reliability for the Oil & Gas industry as well as a wide range of industrial applications, including machinery manufacturing, petrochemicals, and Pipelines and Marine forging industry.
We've been founding new department of finishing machining with the leading technology to meet the different customers. We are proud to be a part of forging business, which delivers qualified forgings & flanges to customers the world over.
Our success rests on building trusted, long-term client relationships, and focus on delivering first class products, cost control and the service concept of empathy, building on our track record in core markets to win new business and strengthen our position.
In 2010, DHDZ moved its marketing center to Shanghai, the largest city in China. Relying on the advantages of Shanghai as an international metropolis in shipping, finance, science and innovation, talent and other aspects, DHDZ is committed to providing global customers with faster corresponding speed, higher product quality, better price and better service!
| Name: | WN Flange BL Flange SO flange |
| Raw material: | carbon/stainless/alloy steel |
| Standard: | ASME;ANSI/DIN;BS;JIS;EN;... |
| Size: | 0.25"~56"~max. |
| Type: | WN;SO;BL;SW;PL;THRD... |
| Facing: | RF;RTJ;FF;FM;M;T;G;... |
| Pressure: | Standard |
Quality Control:
1. Inspecting apparatus and equipment are tested and supervised by relevant national departments on a regular basis.
2. We conduct physical and chemical inspection to raw materials.
3. All links in production are examined and properly reported.
4. We conduct loading examination to the packaging which should be applicable to rust prevention and shipment.
5. We carry out random inspection to products in the storage.
6. Each step of inspection is recorded in both image and written form.



About the Supplier
This supplier has been audited by SGS. Verify the report on the official SGS website with ID "QIP-ASI229088". Items marked "" are certified.
Company Profile
Shanxi DongHuang Wind Power Flange Manufacturing Co., Ltd. Located in Dingxiang Forging Industrial Zone, Shanxi, China, is dedicated to the Manufacturing and Exporting, Studying and Marketing of big-sized steel Flanges, Ring and Square Forgings, Accessories and other related elements for various industries involving Basic industries, Renewable Energy, Wind-Mill Plant, Oil & Gas Industries, Onshore, Offshore, Refinery, Petrochemicals, Water & WWTP, Food Processing Industries, Power & Shipbuilding Industries, Automotive, etc...We have the Representation and Authorization of Distribution of prestigious Manufacturers, leaders in the World Market that have the most demanding Certifications and Approvals of international organizations, in charge of accrediting the compliance of International Standards in the different processes, procedures, materials, testing, testing, storage, delivery and after-sales service of the manufactured products, in order to provide our Clients with reliable High Quality materials that provide Safety and Integrity in their Projects. Flanges covers Weld Neck, Slip On, Threaded, Lap Joint, Socket Weld, Blind, Orifice, Loose, Plate, Oval, Wind Power Flange, Tube Sheet, other Customized Flanges.
Forgings covers Blocks, Disks, Rings, Cylinders, Shafts, Tubes, Bars, other Customized forgings, etc...
Standardization and Customization are both our advantages.
Certificate: ISO system, PED certificates, TUV certified.
Nearly 20 years experience; We have clients from more than 15 Countries in EU, USA, Gulf area, UK, South America, AU, Asia, etc...
With 20 years of manufacturing experience, our factory now covers an area of 32, 000 square meters, employing more than 200 staffs, including 4 senior engineers, 6 engineers, 30 technicians and 12 inspection specialists. With advanced technology, world-class craftsmanship and a complete range of inspection methods, we can produce any products smaller than 5, 000 mm in diameter and lighter than 30, 000 kg in weight in one completion. Having signed long-tem purchasing contracts with major steel and iron factories in China such as Bao Steel, Tai Steel, Capital Steel and others, our company can guarantee the quality of raw materials, with a comprehensive operational chains of material soucing, forging, heat treatment, machine tooling, quality inspection, mechanical typing, and packaging. Our equipment and technologies are also constantly upgrading.
About Our Factory & Business Background
-
Business Type
- Manufacturer/Factory
- Address
- Room 1102-1104, BLD2, LANE 789 Tianzhu Road, Jiading district, Shanghai
-
Plant Area
- 12200 square meters
-
Number of Employees
- 60
-
Registered Capital
- 10,000,000 RMB
-
Terms of Payment
- LC, T/T, D/P, PayPal, Western Union, Small-amount payment
-
International Commercial Terms(Incoterms)
- FOB, CIF, CFR
-
Average Lead Time
-
Peak Season Lead Time: one month
Off Season Lead Time: within 15 workdays -
Nearest Port
- Tianjin Port, Shanghai Port, Qingdao Port
Our Production Capability & Technical Expertise
-
Main Products
- Forging, Forged Ring, Forged Shaft, Big Flange, Flange, Forged, Steel Flange, Pipe Fitting
-
Production Machines
- Boring Machine, CNC Drilling Machine, CNC Horizontal Lathe, CNC Lathe, CNC Vertical Lathe, Flange Lathe, Forging Machine, Grinding Ring Machine, Heat Treatment Equipment, Lathe, Natural Gas Heating Equipment, Sawing Machine, CNC Bending Machine, CNC Cutting Machine, CNC Shearing Machine, Laser Cutting Machine, Upper Roller Universal Plate Rolling Machine
-
ODM Service Available
- Yes
-
OEM Service Available
- Yes
-
R&D Engineers
- 1 people
-
Own Brand
- Yes
Our Industry Experience & Global Business Record
-
Year of Establishment
- 2007-01-24
- Export Year
- 2001-06-01
-
Main Markets
- Europe, Southeast Asia/ Mideast
-
Annual Export Revenue
- 9,600,000 RMB
-
Number of Foreign Trading Staff
- 4
-
Overseas Agent/Branch
- No
FAQ
- What standards do your flanges comply with?
- Our flanges comply with ASME B16.5, API 6A, ANSI, DIN, GB, JIS, GOST, and BSW standards.
- What materials are available for these flanges?
- We offer Carbon Steel, Stainless Steel, Alloy Steel, and DSS materials.
- What is the size range for your flanges?
- Sizes range from 0.25 inches to 56 inches and can be customized for larger dimensions.
- Do you offer customization services?
- Yes, we provide customization for materials and specific product requirements.
- What is the typical lead time for orders?
- Standard lead time is 10-25 days. During peak season, it takes one month, and off-season is within 15 workdays.
- Do you provide OEM and ODM services?
- Yes, we offer both OEM and ODM services with dedicated R&D support.
- How do you ensure product quality?
- We conduct physical and chemical inspections, equipment testing, and record every production step.
- What payment terms do you accept?
- We accept LC, T/T, D/P, PayPal, Western Union, and small-amount payments.
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