Слепой фланец с резиновой прокладкой оптовая DN100 поднял лицо Stockist

Blind Flange with Rubber Gasket Wholesale Guide

Blind flanges with rubber gaskets are essential components for pipeline isolation, pressure testing, and system maintenance. Understanding wholesale pricing, gasket selection, and availability ensures cost-effective procurement.

Blind Flange Overview

Blind flanges are solid discs used to close off pipe ends, valves, or pressure vessels:

Key Features

• Solid construction without center bore
• Thicker than other flange types for pressure containment
• Available in all pressure classes and materials
• Easy installation and removal

Общие приложения

• Pipeline end caps
• System isolation during maintenance
• Pressure testing closures
• Future connection points
• Manhole covers

Rubber Gasket Selection

Proper gasket material ensures leak-free sealing:

Gasket Materials

Материал	Temperature	Приложения
NR (Natural Rubber)	-50 to 80°C	Water, air
NBR (Nitrile)	-30 to 100°C	Oil, fuel
EPDM	-40 to 150°C	Steam, hot water
Viton (FKM)	-20 to 200°C	Chemicals, acids
PTFE	-200 to 260°C	Corrosive media
Neoprene	-40 to 120°C	Refrigerants

Gasket Types

• Full Face: Covers entire flange face (FF flanges)
• Flat Ring: Fits raised face (RF flanges)
• Spiral Wound: For high pressure applications
• Ring Type Joint: Metal gaskets for RTJ flanges

DN100 Flange Supplier Specifications

DN100 (NPS 4) is one of the most commonly used flange sizes:

ASME B16.5 Class 150

• Outside Diameter: 229mm (9.02 inches)
• Bolt Circle: 191mm (7.50 inches)
• Bolt Holes: 8 x 19mm (3/4 inch)
• Flange Thickness: 20.6mm (0.81 inch)
• Weight: Approximately 3.8 kg

EN 1092-1 PN16

• Outside Diameter: 220mm
• Bolt Circle: 180mm
• Bolt Holes: 8 x 18mm
• Flange Thickness: 20mm
• Weight: Approximately 3.5 kg

Складские запасы фланцев с рельефной поверхностью

Raised face (RF) is the most common flange facing type:

Размеры RF

• Class 150/300: 1.6mm (1/16 inch) raise
• Class 400 and above: 6.4mm (1/4 inch) raise
• Serrated finish for gasket grip
• Compatible with various gasket types

Наличие на складе

• Carbon steel A105: All sizes in stock
• Stainless 304/316: Common sizes available
• Alloy steel: Made to order
• Large diameter: 2-3 weeks lead time

Wholesale and Bulk Order Benefits

Pricing Tiers

Quantity	Discount
10-50 pieces	5-10%
50-100 pieces	10-15%
100-500 pieces	15-25%
500+ pieces	25-35%

Bulk Order Advantages

• Significant cost savings
• Priority production scheduling
• Free standard packaging
• Flexible payment terms
• Dedicated account manager

Cheap Mild Steel Flange Bulk Order

For budget-conscious projects, mild steel flanges offer cost-effective solutions:

Material Options

• Q235: Chinese standard mild steel
• SS400: Japanese mild steel
• S235JR: European mild steel
• A36: American mild steel

Сравнение стоимости

• Mild steel: Base price (100%)
• A105 carbon steel: +15-20%
• 304 stainless: +60-80%
• 316 stainless: +100-120%

Фланцевый фитинг для водоочистных сооружений

Water treatment facilities require specific flange configurations:

Common Requirements

• Material: Carbon steel with epoxy coating
• Pressure: PN10 or PN16 sufficient
• Gaskets: EPDM for potable water
• Bolts: Galvanized or stainless

Typical Sizes

• Inlet/Outlet: DN200-DN600
• Process lines: DN80-DN300
• Instrumentation: DN15-DN50

Обеспечение качества

Standard Testing

• Анализ химического состава
• Испытание механических свойств
• Контроль размеров
• Визуальный осмотр
• Hydrostatic pressure testing

Certifications Available

• ISO 9001:2015
• CE/PED for European export
• SGS/BV third-party inspection
• Material test reports per heat

Delivery and Logistics

• Domestic shipping: 3-7 days
• International: 15-30 days by sea
• Express available for samples
• Container loading optimization

Songhai Flange supplies blind flanges with rubber gaskets at wholesale prices. DN100 and other common sizes in stock with raised face configuration. Contact us for bulk order discounts and fast delivery.
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