---
title: "Industrial Stainless Steel Flange Manufacturer | Longan"
date: 2024-10-17T08:09:15Z
modified: 2026-08-06T14:50:19Z
permalink: "https://www.longanflange.com/stainless-steel-flange/"
type: page
status: publish
excerpt: ""
wpid: 1000
timestamp: 2026-08-06T14:50:19Z
tags: []
---
# Certified Stainless Steel Flange Manufacturer for Global EPC Project
Factory-direct production of ASME, GOST, and EN standard flanges with fast, reliable delivery. We are an API-certified supplier specializing in solutions for oil & gas, chemical, and mining projects in Turkey, Vietnam, and the CIS region.
[ Get a Project Quote
](#2)
[ Discover Product >
](#type)
[ Selection Guide >
](#composition)
[ About Longan >
](#WhyLONGAN)
## [EXPLORE OUR 304/316 STAINLESS STEEL FLANGES](https://longanflange.com/product_cat/pressure-vessel-flange-series/)
## [SS Slip On Flange](https://longanflange.com/products/slip-on-flange/)
[ Flange Detail
](/products/slip-on-flange/)
## [SS Weld Neck Flange](https://longanflange.com/products/weld-neck-flange/)
[ Flange Detail
](/products/weld-neck-flange/)
## [SS Plate Flange](https://longanflange.com/products/plate-flange/)
[ Flange Detail
](/products/plate-flange/)
## [SS Blind Flange](https://longanflange.com/products/blind-flange/)
[ Flange Detail
](/products/blind-flange/)
## [SS Socket Weld Flange](https://longanflange.com/products/socket-weld-flange/)
[ Flange Detail
](/products/socket-weld-flange/)
## [SS Lap Joint Flange](https://longanflange.com/products/stainless-steel-lap-joint-flange/)
[ Flange Detail
](/products/stainless-steel-lap-joint-flange/)
## [SS Threaded Flange](https://longanflange.com/products/threaded-flange/)
[ Flange Detail
](/products/threaded-flange/)
## [Custom SS Flange](/custom-flange/)
[ Flange Detail
](/custom-flange/)
Start Your Custom Flange Solution Here
Please complete our request form or contact us directly via email at mft@longanflange.com, phone at +86-15258415825, or WhatsApp for a personalized quote from our product specialists.
https://www.youtube.com/watch?v=hjUaVAy-\_dk&pp=ygUNbG9uZ2FuIGZsYW5nZQ%3D%3D
[ Youtube
](https://www.youtube.com/@LongAnflange)
[ Linkedin
](https://www.linkedin.com/company/wenzhou-long-an-flange-co-ltd)
## [WE VALUE PRODUCT QUALITY & CUSTOMER SATISFACTION](https://longanflange.com/product_cat/pressure-vessel-flange-series/)
## SS Flange Customized Service
According to customers’ special requirements, we provide customized stainless steel flange products and services, such as non-standard size flanges, special material flanges, etc.
[ Request a Fast Quote
](#2)
## SS Flange Forging Process Service
Utilizing advanced CNC processing equipment and techniques, we manufacture flanges of various materials, specifications, and standards, such as 304 stainless steel flanges, etc.
[ Check Price & Lead Time
](#2)
## SS Flange Quality Testing
Conduct rigorous quality testing on the manufactured stainless steel flanges, including dimensional measurement, pressure testing, non-destructive testing and so on to ensure that the stainless steel flange meet relevant standards and customers’ requirements.
[ Contact Us Know
](#2)
## 24/7 SS Flange Installation Guidance
We provide customers with installation guidance and technical support for stainless steel flanges, ensuring that the stainless steel flanges are correctly and safely installed into the pipeline system.
[ Contact Us Know
](#2)
Ask Us About Your Industry Standard Flange Needs
[ Contact Us Know
](#2)
## Top 5 Factors to Consider When Buying Stainless Steel Flanges in Bulk
- **Consistent Quality:** Grade, dimensions, pressure ratings _must_ be uniform. Verify with EN 10204 3.1 certifications.
-
- **Supplier Reliability:** Vet capacity, supply chain, and certifications (ISO 9001). Get samples and consider site audits.
-
- **Cost-Effectiveness:** Optimize logistics, negotiate discounts, and factor in long-term costs (failures, downtime).
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- **Standard Compliance:** Ensure adherence to ASME, DIN, ISO standards. Third-party inspection recommended.
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- **Robust Quality Control:** Multi-stage process: pre-production samples, during-production checks, post-production testing.
## Precision-Certified ss Flange Solutions
Longan Flange offers expert manufacturing with advanced technology and rigorous quality control.
- ISO-Certified Expertise
- 100+ CNC Machining Units
- 15-Point Quality Assurance
- Custom-Standard Hybrid Solutions
- Dual ISO 9001/PED Certification
[ Order Now
](#2)
## EXHIBITION
Êtes-vous le fabricant de brides en acier inoxydable ?
Oui, nous sommes le fabricant. Long'an Flange est spécialisée dans la fabrication de différents types de brides et la personnalisation de produits non standard.
Sur quoi sont basés vos prix ?
Nos prix sont basés sur des avantages de qualité au même prix
Fournissez-vous des certifications ?
Oui, nous fournissons des certifications. Nous avons obtenu de nombreuses certifications nationales et internationales, notamment les certifications CE, Système de gestion de la qualité et Système de gestion de l'environnement.
Quels modes de paiement acceptez-vous ?
Nous acceptons les lettres de crédit (L/C), les virements télégraphiques (T/T) et les documents contre paiement (D/P) comme méthodes de paiement.
Quelle est votre quantité minimum de commande (MoQ) ?
Pour l'achat de brides forgées, il n'y a pas de quantité minimale requise. Cependant, pour une longueur supérieure à 2 mètres, il faut commander au moins 10 pièces.
Quel est votre délai de production ?
Il nous faut généralement 2 à 4 semaines pour réaliser votre commande, mais cela dépend de sa complexité et de notre degré d'occupation.
Offrez-vous des services OEM ?
Oui, nous proposons des services OEM pour les brides non standard personnalisées.
Comment sont emballés les produits ?
Nous emballons nos grandes brides lourdes dans des caisses en bois et les petites brides légères dans des cartons. Le choix dépend du type de bride, de sa taille, de son poids et de la distance à laquelle elle doit être transportée.
Quelles sont vos options de transport?
Nous proposons plusieurs modes de transport pour vos articles, par camion ou par bateau. Nous trouverons la solution la plus adaptée à vos besoins.
Comment choisir un fabricant fiable de brides en acier inoxydable 304 en Chine
Verify certifications (ISO 9001, EN 10204 3.1), and ensure standards compliance (ASME, DIN). Assess production capacity and vet legitimacy (licenses, financials). Rigorous quality control is key: demand pre-production samples and inspect throughout. Consider communication and cultural fit. Understand their supply chain and negotiate contracts carefully. Don’t skip the site visit (or third-party inspection) for firsthand verification. Due diligence ensures a trustworthy supplier for your 304 stainless steel flanges.
Comment réduire les coûts d’approvisionnement des brides en acier inoxydable ?
Strategic sourcing is key: negotiate volume discounts and consider global options. Optimize flange design and standardize specifications. Improve inventory management with JIT or VMI. Streamline procurement via e-procurement and blanket orders. Optimize logistics and shipping costs. Prioritize quality and reliability to minimize defects and lifecycle costs. Monitor market trends (steel prices, currency). Don’t sacrifice quality for price. Strong supplier relationships are vital. Continuously improve your process for maximum savings.
## STAINLESS STEEL FLANGE BY GRADES
### 304/304L Series Stainless Steel Flange
The 304 and 304L stainless steel flanges differ mainly in carbon content (0.08% vs 0.03%). 304 serves general industrial use in food and chemical equipment, while 304L excels in welded systems. Both contain 18% chromium and 8% nickel, with 304L preventing weld point corrosion, making it better for maintenance-heavy applications.
### 316L Series Stainless Steel Flange
316L steel flanges is the premium choice for harsh environments. It’s got 2% molybdenum added to the mix, making it tougher against corrosion than 304. The low carbon content (0.03%) means better welding properties. Marine equipment, chemical processing, and pharmaceutical plants use this grade extensively. When you need flanged stainless steel fittings that can handle aggressive chemicals or saltwater, 316L delivers.
### 2205 (F51) Duplex Metal Flange
2205 is the workhouse of the duplex range. With 22% chromium and 5% nickel, it’s twice as strong as regular stainless steel flanges. It resists corrosion better than 304 or 316L and costs less than super duplex options. Oil rigs, chemical plants, and high-pressure systems rely on 2205 flanges. It’s the sweet spot between performance and price for demanding applications.
### 2507 (F53) Super Duplex Steel Pipe Flange
2507 is the tank of flange materials. 25% chromium and 7% nickel make it virtually bulletproof against corrosion. It’s the strongest option in the lineup. Offshore platforms, desalination plants, and high-pressure chemical systems use 2507 flanges. When failure isn’t an option, and budget isn’t your primary concern, this is your material.
### TP310S Stainless Steel Flange
TP310S handles extreme heat like a champion. With 25% chromium and 20% nickel, it’s built for high-temperature applications. You’ll find these flanges in furnaces, heat exchangers, and hot chemical processing. When your system runs hot enough to make other grades sweat, TP310S keeps its cool.
### TP321 Stainless Steel Pipe Flange
TP321 is the titanium-enhanced version of 304. The titanium addition prevents corrosion issues during welding and high-temperature use. Aircraft parts, chemical processors, and pressure vessels use this grade. It’s the go-to choice when you need a ss flange that can handle both heat and frequent welding without compromising strength or corrosion resistance.
## AVAILABLE STAINLESS STEEL FLANGE GRADES & COMPOSITION
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## OUR AUSTENITIC STAINLESS STEEL FLANGE IN GRADING SYSTEMS
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