Stainless Steel Flanges

Product Introduction

Stainless Steel Flanges are precision-engineered pipe components used to connect pipes, valves, pumps, and other equipment in industrial piping systems. Available in 304, 304L, 316, 316L, and other stainless steel grades with different flange types, dimensions, and pressure ratings. Queen Metal supplies flanges according to applicable ANSI, DIN, EN, and other international standards for reliable connection and corrosion-resistant performance. Common types include weld neck, slip-on, blind, threaded, socket weld, and lap joint flanges. Customized sizes, drilling patterns, pressure classes, materials, and surface finishes are available according to project requirements.

Specifications

Specification	Details
Product Type	Stainless Steel Pipe Flanges
Material Grade	SS304 / SS304L / SS316 / SS316L / Other grades upon request
Standard	ANSI / ASME / DIN / EN / JIS / Other applicable standards
Flange Types	Weld Neck / Slip-On / Blind / Threaded / Socket Weld / Lap Joint
Nominal Size	1/2" – 24" / Customized
Pressure Class	Class 150 / 300 / 600 / 900 / 1500 / 2500 / PN6 – PN40 / Customized
Connection	Butt-Weld / Slip-On / Threaded / Socket Weld
Facing Type	RF / FF / RTJ / Other applicable types
Drilling Pattern	According to ANSI / DIN / EN or customer requirements
Surface Finish	Machined / Polished / Pickled / Customized
Manufacturing Process	Forged / Machined / Other applicable processes
Customization	Grade / Size / Pressure Class / Facing / Drilling / Surface / Processing

Need a Customized Solution?

If you cannot find a stainless steel flanges for your project, please contact Queen Metal. We provide customized solutions based on your required grade, dimensions, standard, surface finish, end treatment, and application.

Send us your specifications, technical requirements, drawings, or parameter files, and our team will provide a suitable quotation and supply solution.

Email: ding@queenmetal.com

Applications & Industries

Industry	Typical Applications
Oil & Gas	Pipeline connections, valves and pressure piping systems
Chemical & Petrochemical	Process piping and chemical equipment connections
Power & Energy	Power plant piping and equipment connections
Water Treatment	Water supply and wastewater piping systems
Food & Beverage	Processing equipment and sanitary piping connections
Pharmaceutical	Process piping and hygienic equipment
Marine & Shipbuilding	Marine piping and equipment connections
Industrial Equipment	Pumps, valves, tanks, heat exchangers and process equipment

Quality Assurance & Testing

Quality Control	Details
Material Verification	Stainless steel grade and chemical composition according to applicable standards
Dimensional Inspection	Flange OD / ID / Thickness / Bolt Circle / Dimensions
Drilling Inspection	Bolt hole diameter, spacing and pattern
Surface Inspection	Surface condition and machining quality
Visual Inspection	Overall appearance and workmanship
Mechanical Testing	According to applicable product standards
PMI Testing	Available according to order requirements
MTC	Material Test Certificate available according to order requirements
Third-Party Inspection	Available upon request

Packaging & Logistics

Item	Details
Packaging	Export-standard flange packaging
Protection	Plastic bags / Waterproof packaging / Protective caps where applicable
Small Flanges	Cartons / Wooden cases according to product size
Large Flanges	Wooden cases / Pallets according to shipping requirements
Surface Protection	Protective film or suitable anti-corrosion protection where applicable
Loading	Container / Bulk shipment
MOQ	According to flange type, size and order requirements
Lead Time	Confirmed according to product availability and order quantity

FAQS

1. What stainless steel grades are available for flanges?

Common grades include 304, 304L, 316, and 316L. Other stainless steel grades can be supplied according to applicable standards and project requirements.

2. What flange standards are available?

Queen Metal can supply stainless steel flanges according to applicable ANSI, ASME, DIN, EN, JIS, and other international standards.

3. What types of stainless steel flanges can you supply?

Common types include Weld Neck, Slip-On, Blind, Threaded, Socket Weld, and Lap Joint flanges.

4. What pressure classes are available?

Depending on the applicable standard and flange type, common pressure ratings include Class 150, 300, 600, 900, 1500, 2500, and PN6–PN40. Customized requirements can be discussed according to project specifications.

5. Can flange dimensions and drilling patterns be customized?

Yes. Queen Metal can provide customized sizes, pressure classes, facing types, bolt hole patterns, materials, surface finishes, and other dimensions according to drawings or project requirements.