Spade Blind Flanges
Introduction
Product Specifications
Pressure Ratings
Available in Class 150–2500 configurations.
Size Range
Compatible with multiple pipe and flange dimensions.
Material Options
Carbon steel, stainless steel, duplex steel, and alloy steel available.
Sealing Face Types
RF and RTJ sealing face options supported.
Thickness Configuration
Different pressure classes correspond to specific thickness requirements.
Connection Dimensions
Flange connection dimensions processed according to pressure classes.
Paddle Blind
Manufacturing & Machining Control
Forging & Material Control
Raw materials are selected according to pressure class and material requirements.
Forged blanks are processed for improved structural strength and dimensional stability.
Material reports and heat number traceability are supported for production verification.
Precision Machining Process
Sealing surfaces, outer diameters, and key dimensions are processed through CNC machining control.
RF and RTJ sealing faces are machined according to corresponding dimensional requirements.
Thickness and connection dimensions are controlled to match pressure rating specifications.
Inspection & Surface Treatment
Critical dimensions and sealing surfaces are inspected before shipment.
Surface treatments such as anti-rust oil, sandblasting, and pickling are available.
MTC, dimensional drawings, and related inspection documents can be provided for export projects.
Wide Range of Application Areas
Applications
- Oil & gas transmission systems
- Chemical and refinery pipelines
- Power and steam systems
- Marine and offshore engineering
- Industrial fluid transfer systems
Customization Services
Size Customization
Custom outer diameter, inner diameter, and thickness available.
Material Customization
Duplex steel and high-temperature alloy options supported.
Sealing Face Customization
RF, RTJ, and special sealing face processing available.
Pressure Rating Customization
Production support for different Class requirements.
Drawing-Based Production
Manufacturing based on customer drawings supported.
Spacer Paddle
Cooperation Support
Multi-Specification Order Arrangement
Support for simultaneous production of different sizes and pressure classes.
Staged Production & Shipment
Batch delivery arranged according to project schedules.
Drawing & Parameter Verification
Dimensions, pressure ratings, and sealing face requirements confirmed before production.
Industrial Export Experience
Familiar with industrial export packaging and shipment procedures.
FAQ
Q1. Why are Spade Blinds commonly used in large pipelines?
The split structure is lighter and easier for field installation and handling.
Q2. What materials are commonly available?
Common materials include carbon steel, stainless steel, duplex steel, and alloy steel.
Q3. Is third-party inspection available?
Yes, material testing, dimensional inspection, and third-party verification are commonly supported.
Q4. How do I confirm the correct pressure rating?
Pressure class should be selected according to pipeline pressure, flange standards, and operating conditions.
Q5. Is custom sizing available?
Yes, special dimensions and thicknesses can be produced based on drawings.
Q6. What documents are usually provided for export orders?
Common documents include MTC, packing lists, drawings, and inspection reports.
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