Which standards do your pipe fittings and flanges comply with?

We manufacture to ASME B16.5, ASME B16.47, ASME B16.36, ASME B16.9, ASME B16.11, MSS SP-97, EN 1092-1, BS 10, DIN, JIS, ISO and API standards, with materials certified to the relevant ASTM / ASME specifications such as ASTM A182, A105, A234, A403, A350 and A420.

Do you supply mill test certificates with every order?

Yes. Every shipment is supplied with EN 10204 3.1 mill test certificates, and each piece is marked with its heat number so chemistry and mechanical properties can be traced back to the original melt. Third-party inspection by the buyer's nominated agency can be arranged on request.

Which materials do you keep in ready stock?

We hold ready stock in stainless steel (304, 304L, 316, 316L, 904L), duplex and super duplex, carbon steel (A105, A234 WPB, A350 LF2), alloy steel (F11, F22, WP11, WP22) and nickel alloys including Inconel, Hastelloy, Monel and Incoloy, as well as titanium grades.

Can you manufacture custom or non-standard piping components?

Yes. We produce custom-made piping connections to customer drawings, including sizes larger than 4 inch, special bores, non-standard pressure classes and open die forgings.

What fastener sizes and grades can you produce?

We produce high tensile bolts and nuts from M20 to M72 in metric and 3/4 inch to 3 inch in UNC, in property classes 8.8, 10.9 and 12.9, as well as ASTM A193 B6, B7, B8, B8M stud bolts and ASTM A194 2H heavy hex nuts.

Which countries do you export pipe fittings and flanges to?

Our main export markets include the UAE, Saudi Arabia, Qatar, Oman, Turkey, Egypt, Malaysia, Indonesia, the Philippines and Singapore, with sales representation in Poland, Italy, the UK, the USA and other countries.

ASTM A182 F316L Stainless Steel Forged Flanges OEM Customizable Steel Slip-On Flange with High Precision Good Quality

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ASTM A182 F316L Stainless Steel Forged Flanges OEM Customizable Steel Slip-On Flange with High Precision Good Quality

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Product Description

Stainless Steel/304/316/316L/Forged/AISI/Threaded/Blind/Plate/Weld Neck/Slip On/Flange

ZHITONG is a professional manufacturer of pipe fittings, valves, and flanges, serving industries including water treatment, construction, petrochemical, and oilfield. Equipped with an ISO 9001 and CE-certified modern factory, we strictly adhere to international standards (GB, JIS, DIN, EN, ANSI/ASME) to ensure superior performance in material quality, pressure resistance, and reliability. With competitive pricing, fast delivery, and customization capabilities, we are committed to providing stable and high-quality industrial piping solutions, striving to be your trusted long-term partner.

ZHITONG also offer Stainless steel flanges, slip-on flanges, blind flanges, weld neck flanges, lap joint flanges, flat welding flanges, loose flanges, pipe flanges, plate flanges, socket welding flanges, hose coupling flanges, flange expansion joints, seamless pipes, stainless steel pipes, etc.

Flange Type	Plate flange, Welding Neck Flange, Blind Flange, Threaded flange, Slip-on Flange, Socket Weld Flange, Sterilization pot flange, Flexible Joint Flange, Tube Sheet, large diameter flange, Press fitting flange, Pressure vessel flange, Lap Joint flange, Butterfly valve flange.
Size	DN15-DN1200, Max Outside Diameter: 6000mm
Pressure	150#-2500#, PN0.6-PN400, 5K-40K
Sealing Face	Raised Face (RF), Full Face (FF), Ring Joint (RTJ)
Standard	GOST 12820-80 / ANSI B16.5 / EN1092 / BS4504 / JIS B2220-2012 / DIN / AMSE B16.5
Wall Thickness	SCH5S, SCH10S, SCH10, SCH40S, SCH20, SCH30, SCH40, SCH60, SCH80, SCH160
Material	Stainless steel: A182F304/304L, A182 F316/316L, A182F321, 1.4301, 1.4401 Duplex Stainless Steel: A182 Gr F51 B16.5, A815 Gr WPS31803 (UNS31803)
Application	Water Treatment, Food and Beverage (Dairy Processing), Papermaking Industry, Shipbuilding Industry, Power Industry, Bioengineering, Natural Gas, Wastewater Treatment, Construction, Metallurgical Industry, Semiconductor Industry, Photovoltaic (PV) Industry, New Energy, Petrochemical and Oilfield Industry.
Surface treatment	Mill Finish / Sandblasting / Marking
For products with specific requirements, please contact our service team.

We offer a comprehensive product range and provide free samples. Should you be interested, please feel free to contact us directly via our Alibaba.com store.

Products Description

1. Excellent Corrosion Resistance

Made of corrosion-resistant stainless steel, these flanges withstand harsh conditions, providing reliable, long-lasting connections.

2. High Strength and Durability

Possesses excellent mechanical strength, capable of withstanding high pipeline pressure and external loads, ensuring safety and reliability.

3. Lower Life-Cycle Cost

While the initial purchase price may be slightly higher, the exceptionally long service life and significantly lower maintenance requirements lead to substantial overall economic benefits.

4. Easy Maintenance

Unlike carbon steel flanges, they require no periodic anti-rust coating maintenance, saving both time and labor.

5. Excellent Thermal Performance

Offers stable mechanical performance in extreme temperatures, from intense heat to deep cold, ensuring reliability.

We have sufficient stock to meet urgent orders. Please contact us directly on Alibaba.com for immediate assistance.

Customization Options

Certifications

Packing & Delivery

Customer Comments

After Sales Service

Quality Assurance

All products undergo rigorous inspection throughout production until pre-shipment. Additionally, we provide a 3-year quality warranty service. For any quality-related issues, please contact our service team, and we will provide solutions within 24 hours.

24-hour online support

Our service team operates 24/7 to provide immediate responses to both after-sales product issues and new product inquiries. For special circumstances, we offer both online and on-site support services.

Professional Team Support

ZHITONG maintains a professional engineering team capable of providing both online and on-site services. With years of project experience, we offer expert advice for both standard and specialized projects.

Company Profile

1. Produced from wide range of equipment.

We have a wide range of equipment, including sandblasting machines, polishing machines, sawing machines, presses, and CNC machines, with nearly 150+ units in total.

2. Stress testing and performance testing.

Our products undergo multiple rounds of quality inspections—from raw material processing to production, and even after completion. Additionally, we have a dedicated product laboratory in the 3F workshop for enhanced quality control.

3. Design exploring

High Technology in design exploring and production workmanship.

4. Customization

ZHITONG is a factory with a professional engineering team. We can customize products based on your provided drawings and also offer suggestions for your reference.

5. Extensive inventory

For conventional valves, pipe fittings and flanges, we keep substantial inventory to ensure the shortest possible delivery time.

Exhibition & Client Visit

Russia

Mexico

South Africa

Indonesia

Vietnam

Brazil

Frequently Asked Questions

Q1. Are you a trading company or factory?

We are a manufacturer boasting 15 years of industry experience and holding proprietary import-export rights.

Q2. May I request free samples?

Free samples can be provided for first cooperation under sincere cooperation.

Q3. What certifications do you have?

Yes, we hold ISO, CE, and PED certificates. In addition, we possess a number of design patents and a Special Equipment Manufacturing License.

Q4. How do you control the quality?

In quality control, the most critical aspect is preventing material mix-ups. Our factory has installed multiple spectroscopic PMI analyzers in the raw material warehouse, production workshop, and dispatch area. Equipment such as pressure testing machines, PMI analyzers, RA roughness testers, and hardness testers all contribute to ensuring quality. Additionally, we have our own laboratory and can provide extra test data for special products. During the production process, dedicated inspectors conduct checks at different stages. Furthermore, a specialized team of quality inspectors examines finished products to effectively prevent issues like quantity shortages, quality defects, and chemical mix-ups.

Q5. If there is any quality problem, how do you solve it?

We believe that protecting our clients' interests is the cornerstone of our business. While we cannot guarantee 100% perfection, occasional quality issues may still arise. Depending on the specific situation, we typically resolve such cases through replacements, compensation, or resending goods. The specific solution will be discussed and agreed upon with the customer based on the actual circumstances.

Q6. How long is your delivery time?

For normal products in 7-10 days; For bulk order, in 15-25 days. It depends.

ASTM A182 F316L Stainless Steel Forged Flanges OEM Customizable Steel Slip-On Flange with High Precision Good Quality

Product Description

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