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Pipeline Flanges Manufacturer | Weld Neck, Blind & Slip On Flanges | SHAANXI GOLD-STONE

Pipeline Flanges Manufacturer | Weld Neck, Blind & Slip On Flanges | SHAANXI GOLD-STONE photo-1

Product Spotlights

Professional manufacturer and supplier of pipeline flanges for oil & gas, petrochemical, power generation, and industrial piping systems. Available in carbon steel, stainless steel, and alloy steel. ASME B16.5 compliant.
Negotiable MOQ: 1 Piece (Price negotiable depending on order volume and customization)
Key Specifications
Get Latest Price
Material:
Stainless Steel
Type:
Welding Flange
Structure:
Round
Payment & Shipping
Payment Methods:
Port of Shipment:
Tianjin
Delivery Detail:
15 days
Material Stainless Steel
Type Welding Flange
Structure Round
Connection Welding
Standard ANSI, DIN, JIS, BSW
Sealing Surface FF
Manufacturing Way Forging
Transport Package Polyresin case
Trademark GS
Origin China

Pipeline Flanges for Oil & Gas Industry

Pipeline flanges are critical components used to connect pipes, valves, pumps, pressure vessels, and other equipment within industrial piping systems. They provide a secure and detachable connection that simplifies installation, inspection, maintenance, and system expansion.

In demanding oil and gas environments, flanges must withstand high pressure, temperature fluctuations, vibration, and corrosive media while maintaining reliable sealing performance.

SHAANXI GOLD-STONE I/E CO., LTD. is a professional manufacturer and supplier of industrial pipeline flanges, providing high-quality flange solutions for oil & gas, petrochemical, power generation, marine, and industrial processing projects worldwide.



Product Types

Weld Neck Flange (WN Flange)

Weld neck flanges feature a long tapered hub that transfers stress smoothly into the pipe wall.

Features

· Excellent strength and fatigue resistance

· Suitable for high-pressure applications

· Ideal for high-temperature service

· Superior structural integrity

Applications

· Oil & gas transmission pipelines

· Refineries

· Offshore platforms

· Power plants



Blind Flange (BL Flange)

Blind flanges are used to close the ends of pipelines, pressure vessels, and equipment openings.

Features

· Reliable pressure containment

· Easy access for maintenance

· Suitable for system isolation

· Strong sealing performance

Applications

· Pipeline shutdown systems

· Pressure vessel closures

· Maintenance access points



Slip On Flange (SO Flange)

Slip on flanges slide over the pipe and are welded internally and externally.

Features

· Easy installation

· Cost-effective solution

· Good alignment capability

· Suitable for medium-pressure systems

Applications

· Water treatment facilities

· Chemical plants

· Industrial utility pipelines



Socket Weld Flange (SW Flange)

Socket weld flanges are designed for small-diameter, high-pressure piping systems.

Features

· Smooth flow characteristics

· Strong welded connection

· Compact design

· Excellent pressure resistance

Applications

· Hydraulic systems

· Steam pipelines

· High-pressure process lines



Threaded Flange

Threaded flanges are connected without welding and are suitable for specific low-pressure applications.

Features

· Easy assembly and disassembly

· No welding required

· Reduced installation costs

Applications

· Utility systems

· Compressed air systems

· Temporary pipeline installations



Available Materials

SHAANXI GOLD-STONE supplies flanges in various materials:

Carbon Steel

· ASTM A105

· ASTM A350 LF2

· ASTM A694

Stainless Steel

· ASTM A182 F304

· ASTM A182 F304L

· ASTM A182 F316

· ASTM A182 F316L

Alloy Steel

· ASTM A182 F11

· ASTM A182 F22

· ASTM A182 F91

Duplex Stainless Steel

· F51

· F53

· F55

Custom materials are available upon request.



Flange Standards

Our products comply with internationally recognized standards:

· ASME B16.5

· ASME B16.47

· ANSI Standards

· DIN Standards

· EN 1092-1

· ASTM Material Specifications

· MSS Standards

These standards ensure global compatibility and reliable engineering performance.



Pressure Ratings

Available pressure classes include:

· Class 150

· Class 300

· Class 600

· Class 900

· Class 1500

· Class 2500

Custom dimensions and specifications can be manufactured according to project requirements.



Applications

Pipeline flanges are widely used in:

Oil & Gas Industry

· Crude oil pipelines

· Natural gas transmission systems

· Offshore platforms

· LNG facilities

Petrochemical Industry

· Refining units

· Chemical processing plants

· Storage terminals

Power Generation

· Steam systems

· Cooling water pipelines

· Boiler systems

Industrial Processing

· Water treatment facilities

· Mining operations

· Manufacturing plants

Marine & Shipbuilding

· Seawater piping systems

· Engine room pipelines

· Offshore engineering projects



Quality Assurance

Every flange undergoes strict quality control procedures:

· Raw material verification

· Dimensional inspection

· Chemical composition testing

· Mechanical property testing

· PMI testing (Positive Material Identification)

· Ultrasonic Testing (UT)

· Magnetic Particle Testing (MT)

· Hydrostatic testing upon request

All products are fully traceable and supplied with inspection certificates.



Why Choose SHAANXI GOLD-STONE

· More than 20 years of export experience

· International quality standards

· Competitive factory-direct pricing

· Custom manufacturing capability

· Fast delivery schedules

· Global project supply experience

· Professional technical support



Recommended Products

· Weld Neck Flanges

· Blind Flanges

· Slip On Flanges

· Socket Weld Flanges

· Threaded Flanges

· Carbon Steel Flanges

· Stainless Steel Flanges

· Pipe Elbows

· Pipe Tees

· Pipe Reducers

· ASME B16.9 Pipe Fittings



Request a Quote

Looking for a reliable pipeline flange supplier for your next oil & gas or industrial project?

SHAANXI GOLD-STONE I/E CO., LTD. provides high-quality flange products manufactured to international standards with worldwide shipping support. Contact our sales team today for technical assistance and competitive quotations.


Product Tags: pipeline flanges , weld neck flange , oil and gas flanges

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Verified Business License
Business Type
Manufacturer
Year Established
2009
Factory Size
1,000-3,000 square meters
Annual Export Value
US$1.5 Million - US$2.5 Million

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