Yuhong Group Co.,Ltd
| Payment Terms | T/T, L/C AT SIGHT |
| Supply Ability | According to Client Requirements |
| Delivery Time | Depends on quantity |
| Packaging Details | According to Client Requirements/ Ply-wooden Case/ Iron Case/ Bundle with plastic Cap |
| Standrad | ASTM A182 |
| Material Grade | F55 |
| Product Name | Bleed Rings |
| Schedule | SCH20, SCH30, SCH40, STD, SCH80, XS, SCH60, SCH80, SCH120, SCH140, SCH160, XXS |
| Size | 1/8"NB TO 48"NB IN |
| Packaging | PLY-WOODEN CASE OR PALLET |
| Brand Name | YUHONG |
| Model Number | ASTM A182 F55 |
| Certification | ABS, GL, DNV, NK, PED, AD2000, GOST9941-81, CCS, ISO 9001-2008 |
| Place of Origin | CHINA |
View Detail Information
Explore similar products
A403 WP321H Elbow 90/180 Deg , Stainless Steel Butt Weld Fitting B16.9
ASTM B366 N08810 Incoloy 800H 1.4958 180 DEG Elbow Buttweld B16.9
B366 Hastelloy C22 180° LR Elbow Long Radius Butt Weld Fitting
STAINLESS STEEL N08904 BUTT WELD FITTING SB366 WP904L EBLOW B16.9
Product Specification
| Payment Terms | T/T, L/C AT SIGHT | Supply Ability | According to Client Requirements |
| Delivery Time | Depends on quantity | Packaging Details | According to Client Requirements/ Ply-wooden Case/ Iron Case/ Bundle with plastic Cap |
| Standrad | ASTM A182 | Material Grade | F55 |
| Product Name | Bleed Rings | Schedule | SCH20, SCH30, SCH40, STD, SCH80, XS, SCH60, SCH80, SCH120, SCH140, SCH160, XXS |
| Size | 1/8"NB TO 48"NB IN | Packaging | PLY-WOODEN CASE OR PALLET |
| Brand Name | YUHONG | Model Number | ASTM A182 F55 |
| Certification | ABS, GL, DNV, NK, PED, AD2000, GOST9941-81, CCS, ISO 9001-2008 | Place of Origin | CHINA |
| High Light | UNS S32760 Bleed Rings ，ASTM A182 Bleed Rings ，Super Duplex Stainless Steel Bleed Rings | ||
ASTM A182 F55 Bleed Rings
ASTM A182 F55 Vent Ring. ASTM A182 covers wrought stainless steel and alloy materials for high temperature service, including flanges, fittings, and valves.
Grade F55 (UNS S32760): A super duplex stainless steel with high chromium (25%), molybdenum (3.5-4.5%), and nitrogen (0.2-0.3%) content for excellent strength and corrosion resistance. Meets NACE MR0175/ISO 15156 standards for sour services.
Vent Ring Function:
Purpose: Installs between flanges to provide a port for venting, draining, or pressure testing in piping systems. Venting is essential during hydrostatic testing or draining of fluids.
Design: Typically includes a threaded hole for a valve or plug connection, matching flange dimensions (ASME B16.5/B16.47) for seamless integration.
Vent rings are often used in place of orifice flanges.
They are easier to install and more affordable than orifice flanges in environments involving hazardous materials or contamination
Convenient for accessing drain lines, sampling, or connecting instruments
They can also reduce or eliminate pressure prior to flange removal by using a valve or blind flange.
This procedure is common when replacing a leaking valve in a piping system.
Applications include offshore oil/gas, chemical processing, desalination, and seawater systems where chloride-induced corrosion (pitting, crevice) is present.
Due to its duplex structure (austenite + ferrite phases), F55 is suitable for high pressure, high temperature, and corrosive services.
Chemical composition % of ASTM A182 f55 flanges
| Chemical Composition Limits | ||||||||||
| Weight% | C | Mn | P | S | Si | Cr | Ni | Mo | N | W |
| Super Duplex F55 | 0.03 max | 1.00 max | 0.03 max | 0.01 max | 1 max | 24-26 | 4.5-6.5 | 3-4 | 0.25 | 0.08-0.20 |
Mechanical properties of ASTM A182 f55 flanges
| Alloy | Tensile Strength N/mm² | Yield Strength 0.2% N/mm² | Elongation | Hardness HB |
| Super Duplex F55 | 860 | 720 min | 16 min | 270 max |
Application
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 HOLDING GROUP is one of the largest Procurement, Engineering & Contracting Group companies in China. Our group branch company and factory have been already approved by : ABS, LR, DNV, GL, BV, CCS, KR, PED 97/23/EC, AD2000-WO, GOST9941-81, CCS, TS, CNNC, ISO9... YUHONG HOLDING GROUP is one of the largest Procurement, Engineering & Contracting Group companies in China. Our group branch company and factory have been already approved by : ABS, LR, DNV, GL, BV, CCS, KR, PED 97/23/EC, AD2000-WO, GOST9941-81, CCS, TS, CNNC, ISO9...
Get in touch with us
Leave a Message, we will call you back quickly!