321 Stainless Steel Flanges 1/2" to 120" Size Range with 150-2500lbs Pressure Rating

Price Negotiable
Price: Negotiable
MOQ: Negotiable
Delivery Time: Negotiable
Brand: EVEREST
Product Description
Product Overview
High-quality stainless steel flanges designed for secure connections in industrial piping systems. Available in multiple types including slip-on, welding neck, blind, and socket welding configurations.
Technical Specifications
Flange Types Slip-on, Welding Neck, Blind, Socket Welding, Threaded, Lap Joint, and Special Flanges
Materials Stainless Steel: 304, 304L, 304H, 316L, 316T, 316H, 321, 321H, 347H, 310S, 317L
Duplex Steel: S31803, S32205/2205, S32750/2507, S32760, 904L, S31254, SMO254
Special Materials: NO4400/400, NO6625/625, NO8825, N10276, C276, 800, 800H, 600, 600H, N08800, N08810, N08825, N10276
Standards HG/T20592-2009, GB/T9124.1-2019, JB/T79~JB/T86-94, SH3406-96, ANSI B16.5, ANSI B16.47 Series A & B, DIN2527~DIN2367, JS B2220
Size Range 1/2" to 120" (DN15 - DN3000)
Pressure Rating 150lbs to 2500lbs (0.6Mpa - 42.0Mpa)
Surface Treatment Sandblasting Treatment / Passivation Treatment
Manufacturing Process Hot Die Forming → Solid Solution Treatment → Machining
Quality Assurance
Our enterprise maintains a dedicated Quality Management Department implementing comprehensive quality control across all production sectors. We conduct annual management reviews to ensure ongoing compliance, effectiveness, and suitability of our quality management systems.
Quality inspection process for stainless steel flanges
Industry Applications
Our flanges have been successfully implemented in major industrial projects worldwide including:
  • Petrochemical refining and integration projects
  • LNG terminals and storage facilities
  • Shipbuilding and marine engineering
  • Chemical processing plants
  • Nuclear power facilities
  • Infrastructure projects including airports and bridges
Certifications & Standards
API-5LD Authentication Certificate
American Petroleum Institute API 5LC Certificate
ASME Certificate in the United States
EU PED & AD2000 certificate
ABS classification society certification certificate in the United States
DNV Det Norske Veritas Certificate
RINA Italian Bureau of Shipping Certificate
BV French Bureau of Shipping certification
LR Lloyd's Register Certificate of Approval
Customs Union EAC Certificate
Russian GOST certificate
Packaging & Shipping
Products are carefully packaged with protective materials to prevent damage during transit. We use trusted delivery services with order tracking to ensure prompt and secure arrival.
Frequently Asked Questions
Where is this product manufactured?
This product is manufactured in China.

Get in Touch

Have questions about our products or want to discuss a custom order? Our team is ready to help you.

Company Everest Technology (Wuxi) Co., Ltd
Location No. 3, Gangchu Road, Hudai Town, Binhu District, Wuxi City, Jiangsu Province, China
Contact Person DAVID

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