HVAC & Plumbing and Equipment Isolation ASME B16.5 ASTM A105 Sw RF Flange

• Customization: Available
• Standard: ANSI, DIN, GB, JIS, GOST, BSW
• Type: Welding Flange
• Model NO.: ASME B16.5 ASTM A105
• Material: Carbon Steel
• Structure: Round
• Connection: Welding
• Sealing Surface: RF
• Manufacturing Way: Forging
• Standard Specifications: ASTM A182, GOST 12820-80, En1092-1, DIN 2573, 2576
• Steel Grade: ASTM A105,ASTM A350 Lf2,ASTM A694 F42/F52/F60/F65
• Main Process: Cold-Formed Seamless
• Unit Leagth: 5800mm-12000mm
• Annual Capacity: 120000 Metric Tons
• Section Shape: Round
• Quality: High Quality
• Ends: Plain Ends
• Products: Elbow 90 Lr 36′′ Sch Std SA-234wp11 Steel Tubes Fi
• Delivery: 7-35 Days
• Number: Customed
• Used1: Pipeline Transport, Boiler Pipe, Hydraulic/Automob
• Used2: Pump/Pipeline/Valve Connection/Power Generation
• Used3: Chemical/Power/Electric Industry/Water Treatment
• Transport Package: Seaworthy Package
• Specification: 3/4"-60"
• Trademark: EZ Steel
• Origin: China
• HS Code: 73043110
• Production Capacity: 500000/Year

Product Description

HVAC & Plumbing and Equipment Isolation ASME B16.5 ASTM A105 SW RF Flange

 

Product Description

Type	Weld Neck Flange, Lap Joint Flange, Threaded flange, Socket Welding Flange,   Blind Flange,  Slip on Flange .
Material	Stainless steel, Alloy steel. Duplex/Super Duplex, Aluminum
Size	3/4"-60"
Pressure	150#,300#,600#.900#,1500#,2500#
Technics	Forged,
Connection	welding
Sealing surface	FF RF M F M TG  RJ
Surface treatment	Anti-rust Oil,
Producing process	Billet-cutting-forging-heating-lathe-drilling-inspection-marking-packing-export-din flange
Application Fields	Chemical Industry /Petroleum Industry /Power Industry/Metallurgical Industry Building Industry /Ship-building Industry
Supply Capacity	8000tons  per  year
Min Order Quantity	1 ton
Inspection	factory in-house self-check or Third Party inspection
PACKING	plywood cases, pallets, nylon bags or according to the customers' requirements, plastic cap
Delivery	It is generally within 25 days after receiving your payment
TRADE TERM	FOB, CNF&CFR, CIF
PAYMENT	TT or L/C
CERTIFICATES	ISO-9001/2000,PED,ABS.TUV.DNV

 

Our ASME B16.5 ASTM A105 Socket Weld (SW) Raised Face (RF) Flanges are precision-engineered for HVAC, plumbing, and equipment isolation applications. These carbon steel flanges provide leak-proof connections in low-to-medium pressure systems, ensuring easy installation and maintenance.

Key Features & Benefits

 Material: ASTM A105 Carbon Steel - High strength & machinability
 Standard: ASME B16.5 - Compliant with dimensional & pressure requirements
 Connection Type: Socket Weld (SW) - Ideal for small-bore piping (NPS 1/2" to 4")
 Face Type: Raised Face (RF) - Ensures secure gasket sealing
 Pressure Rating: Class 150, 300, 600 (up to 1440 psi at 100°F)
 Temperature Range: -29°C to 425°C (-20°F to 800°F)
 Corrosion Protection: Optional galvanizing or epoxy coating

 

Technical Specifications

Parameter	Specification
Material Standard	ASTM A105
Manufacturing Standard	ASME B16.5
Flange Type	Socket Weld (SW)
Face Type	Raised Face (RF)
Size Range	1/2" to 4" (DN15 to DN100)
Pressure Classes	150#, 300#, 600#
Bore Type	Smooth, matches pipe ID for optimal flow
Surface Finish	Machined, black (bare) or coated
Testing	Hydrostatic, PMI (optional)

 

Why Choose Socket Weld Flanges?

 Compact & Lightweight - Ideal for tight spaces in HVAC and plumbing systems
 Stronger Than Threaded Flanges - No thread leakage risks
 Easy Alignment - Socket weld design simplifies installation
 Vibration Resistant - Performs well in pump/compressor connections

 

Applications

HVAC Systems

• Chilled water & refrigerant lines

• Boiler feedwater connections

Plumbing & Water Supply

• High-pressure water mains

• Pump discharge fittings

Equipment Isolation

• Valve & instrument bypass lines

• Maintenance cut-off points

Industrial Process Piping

• Chemical dosing systems

• Compressed air lines

 

Detailed Photos

 

 

 

 

 

Packaging & Shipping

 

 

 

FAQ

Q:  How many days can you deliver after confirmed the order?
A:  For stock:  within 5-7 days;
      For customized product:  around 30 days;
      For special sizes:  subject to negotiation.

Q: How does your company do quality control?
A: ISO 9001:2015 certified;
     Product certificate as per EN10204 3.1 or 3.2 as per customer's request.
    
  
Q: Can I have a factory-visit?
A:  Surely. All customers are welcome to visit us in China.

Q: Can I have a trial order?
A: Of course, it is an honor for us to have the opportunity to show our quality and service. 
 

Company Profile

	Business Type:	Manufacturer/Factory
	Main Products:	Carbon Steel Pipe , Stainless Steel Pipe , Copper Nickel Tube , Heat Exchanger Tube , Boiler ...
	Registered Capital:	2000000 RMB
	Plant Area:	>2000 square meters
	Management System Certification:	ISO 9001, ISO 14001, OHSAS/ OHSMS 18001, ANSI/ESD
	Average Lead Time:	Peak Season Lead Time: 1-3 months Off Season Lead Time: within 15 workdays

SGS Serial NO. :

QIP-ASI199413Report Verification

EZ STEEL INDUSTRIAL Co., Ltd, together with LONG-RUN METALS Co., Ltd, is the export division and window company of EZ STEEL GROUP, which was founded in 1996 and has been committed to the development and manufacturing of industrial tubes in the past 20 years. It is one of the largest steel tube manufacturing enterprise groups in China. The group possess fixed assets over 200million and more than 800 employees with annual production capacity over 300 thousand tons.

The company has continuously introduced the world advanced manufacturing equipment and now is able to produce welded and seamless steel tube, copper tube and nickle alloy tube. We also have our own coating facilities and workshops for further processing. After years of development, EZ STEEL GROUP and the affiliated enterprises have obtained many kinds of domestic and international certifications including ISO 9001 Quality Management System Certification, ISO14000 Environment Management System Certification, CE, License for Manufacture of Pressure Piping in China, etc. The company has obtained good domestic achievements and is the nominated supplier of CNPC and CNOOC. The product are exported to Southeast Asia, the Middle East and Africa, Europe, Australia, North and Latin Americas via trade companies, and are widely used in pipeline works, foundation works, steel structure works, boiler and condenser fabrication, oil refinery plant, power plant, sugar-making plant, ship-building and offshore construction projects etc.

Holding the concept of First-class Brand, First-class Service, First-class Value, EZ STEEL GROUP is aiming to build up a win-win enterprise platform for both our customers and employees.