Low Price API So Pipe Fitting Flange for Special Working Conditions

• Customization: Available
• Standard: ANSI, DIN, GB, JIS, GOST, BSW
• Type: Welding Flange
• Model NO.: Slip on Flange
• Material: Carbon Steel
• Structure: Flanges
• Connection: Welding
• Sealing Surface: RF
• Manufacturing Way: Forging
• Product Name: Steel Flanges
• Keywords: Slip on Flange
• Flange Size: 1/2"-24"; DN15-DN600
• Flange Class: 150#; 300#; 400#; 600#; 900#; 1500#; 2500#
• Flange Material: Carbon Steel, Stainless Steel, Duplex Steel
• Flange Material Grade: ASTM A105, ASTM A350 Lf1. Lf2
• Flange Standard: ANSI/ASME B16.5/16.47;DIN;BS;En 1092-1
• Flange Type: Weld Neck, Slip on, Lap Joint
• Flange Surface Treatment: Anti-Rust Oil; Electric Galvanized
• Flange Connection: Welding, Lap Joint, Threaded
• Flange Heat Treatment: Normalizing, Annealing
• Application Industry: Petrochemical Industry, Power Industry
• Hub Length: Customizable
• Quality Control: Dimensional Accuracy, Surface Quality
• Selection Principles: Pressure Matching, Media Compatibility
• Transport Package: Standard Packaging or Customized
• Specification: Standard Specifications or Customized
• Trademark: GREEN CONSTRUCTION
• Origin: Nantong, China
• Production Capacity: 5000000pieces/Year

Product Description

Product Description

SLIP ON FLANGE

Slip-on flange is a popular, economical flange type that slides over the pipe end and is secured with two fillet welds - one inside and one outside. This versatile flange design offers easy alignment, quick installation, and reliable performance for low to medium pressure applications.

 

STRUCTURAL ADVANTAGES

Enhanced Stress Distribution:
Optimized neck design

Smooth Transition Zone:
The short neck provides a gradual transition from flange thickness to pipe wall, reducing stress concentration

Load Distribution:
Dual fillet welds share the load, preventing single-point failure

Fatigue Resistance:
Improved fatigue life compared to flat slip-on flanges due to better stress flow

Product Parameters

TECHNICAL PARAMETERS
Products	Steel Flange
Flange Size	1/2"-24"; DN15-DN600
Flange Class	150#; 300#; 400#; 600#; 900#; 1500#; 2500#
Flange Material	Carbon Steel; Stainless Steel; Duplex Steel; Copper Nickel Etc.
Flange Material Grade	ASTM A105,ASTM A350 LF1. LF2, LF6,16MN, ASTM A182,F1,F5,F9,F11,F22, ASTM A182 F304/304L, F316/316L, F316Ti, F321, F904, UNS N08020, UNS N06625, HAS C276 etc.
Flange Standard	ANSI /ASME B16.5/16.47;DIN;BS;EN 1092-1;GOST;JIS;AWWA C207 etc.
Flange Type	Weld Neck; Slip On; Lap Joint; Blind Flange; Socket Flange; Spectacle Blind Flange; Orifice Flange; Long Weld Flange Etc.
Flange Surface Treatment	Anti-Rust Oil; Electricle Galvanized; Hot Dipped Galvanized; Painting Etc.
Flange Connection	Welding; Lap Joint; Threaded
Flange Heat Treatment	Normalizing; Annealing; Quenching+Tempering
Application Industry	Oil&Gas; Water Treatment; Electric Power; Chemical

Detailed Photos

FASTEST INSTALLATION

Simple slip-over design with dual fillet welds requires no pipe beveling or precise alignment - install in half the time of weld neck flanges, significantly reducing labor costs and project timelines

 

RELIABLE SEALING PERFORMANCE 

Consistent gasket compression and proven sealing reliability for leak-free operation in standard applications

                

UNIVERSAL PIPE COMPATIBILITY

Accommodates multiple pipe schedules with a single flange size - the generous bore clearance accepts pipe diameter variations, reducing inventory requirements and eliminating sizing errors

PROVEN RELIABILITY FOR STANDARD APPLICATIONS

Dual weld configuration provides secure, leak-free connections for non-critical services - trusted in water systems, HVAC, and general industrial piping with millions of successful installations worldwide

IMMEDIATE AVAILABILITY & EASY REPLACEMEN

Stock availability in all common sizes and materials (carbon steel, stainless steel 304/316), no special ordering required, perfect for urgent repairs and maintenance

FAQ

Q1: Do you produce directly?
A: Yes! We are a manufacturer-based company with complete equipment.

Q2: What is your minimum order quantity?
A: The minimum order quantity is 1 piece, and the price is affected by quantity, size, and material.

Q3: Are there free samples?
A: Yes, but customers need to pay for shipping.

Q4: Do you need to check before shipment?
A: Yes, all shipments must be checked for size, PMI, and quantity; any third-party inspection, please inform us before placing an order.