Paddle Blinds / Line Blanks for Piping Systems
In isolation (no pressure), hydrotest, and custom thicknesses from the specialists in Paddle Blind Flanges
PADDLE BLIND / LINE BLIND PRODUCT SPECIFICATIONS:
- Available in Sizes: 1/2" to 96"
- Choose from Isolation, Hydro, or Custom thicknesses
- Pressure Rating Class options: 150#, 300#, 600#, 900#, 1500#, 2500#
- Stocked in 516 - Gr70 carbon steel and 304/316 stainless steels; can supply any alloy
- Alloy materials milled in America
- Face options: Flat, Raised, RTJ Male or Female (Octagonal or Oval Cut)
- Finish options: Serrated (125 / 250 RMS) or Mill
- Can supply with various steel coatings
- Meets ASME standards: B16.48 • B16.5 • B16.20 • B16.47 (For larger diameter flanges)
- Products feature easily identifiable coloring, markings, and handles
- We offer same-day local shipping/delivery in Texas and Lousiana
USA Industries Blind Processing
| Manufactured In-House | X |
| U.S. Produced Steel | X |
| PMI All Raw Materials | X |
| Waterjet & Plasma Cut Materials | X |
| Cut Deburring | X |
| QC Verified Cuts | X |
| Stamped with Blind Specs | X |
| Color-Coded by Class Rating | X |
| Painted (Carbon Steel) | X |
| Order Verification | X |
We specialize in the design and manufacturing of paddle blinds. Using advanced CNC plasma and waterjet machines to ensure precision and quality, we manufacture all of our paddle blinds on-site. Our paddle blinds are offered in various sizes, made from top-grade alloys, such as carbon steel, stainless steel, or other specialized alloys known for strength, durability, and corrosion resistance. Whether you need new blinds made quickly or prefer rental options, we have you covered with a large stock available year-round, delivered to your location.
ABOUT PADDLE BLINDS / LINE BLANKS:
Paddle Blinds, are inserted between two flanges within piping systems.
- Function: Paddle blinds temporarily stop or regulate flow during inspections, repairs, or testing.
- Material: Made from carbon steel, stainless steel, or other durable alloys to withstand high pressures and temperatures.
- Advantages: Easy to install/remove, cost-effective, and reliable for system isolation.
- Applications: Used in refineries, chemical plants, petrochemical plants, cement plants, steel mills, storage terminals, and food processing facilities.
- Alternative Names: Also known as paddle blank, line blank, skillet blind, pancake blind, spade blind, isolation blind, or test blind.
Paddle Blind 3D Product Rotation
We are committed to continuous innovation in piping isolation solutions, consistently enhancing our products to meet your needs. Our custom slip blind offerings include the exclusive EZ Vent-Purge®, EZ Vent®, EZ Purge®, and EZ Guillotine™ slip blinds, designed for optimal performance and efficiency. Additionally, we manufacture the patented EZ Lock Blind Rack®, a premier inventory management system that ensures secure storage, easy transportation, and enhanced organization, preventing common issues related to handling and safeguarding your blinds.
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- Flange Rating (150#, 300#, 600#, 900#, 1500#, 2500#)
- Size (1/2" - 96")
- Face Type (Flat, Raised, RTJ - Male or Female (if Female: Oval or Octagonal cut)
- Mill or Serrated Finish
- Blind Thickness (Isolation, Hydro, Custom)
- Handle Type (T, 7, Straight)
- Steel Material Type (Carbon, Stainless - 304, 316, Other)
- Quantity Needed
- Necessary Delivery Date
Paddle Blinds, Specialty Slip Blinds & Blind Flanges
Frequently Asked Questions
Our steel plates are proudly sourced and manufactured in the United States. We work with trusted vendors who purchase their alloys from American mills that meet stringent quality and environmental standards, ensuring top performance and consistency in every product.
Absolutely. We can provide mill test reports (MTRs) and country of origin documentation upon request for your records or compliance needs.
We are the actual manufacturer, not just a reseller. Since 1982, each blind is crafted with perfect symmetry, clean edges, fresh paint, marked or stamped, and color-coded handles for easy flange rating identification. Moreover, unlike others who may claim this, USA Industries has the largest stock for immediate delivery and in-house production.
Most requests are for 5/16" thickness, although 1/4" or 3/8" are also very common.
T-handles, 7 handles, and Straight handle. We can also make custom handles for you.
Yes. We will customize your blind to your exact specifications.
We stock our isolation and hydrotest blinds with a mill finish and offer a 125/250 RMS serrated finish as a standard option, but we can manufacture to your exact requirements.
The term "paddle blind" is a general term that doesn't specify the thickness or purpose of the blind (whether for isolation or testing).
A "hydroblind," also known as a "hydrotest blind," is designed to withstand the maximum pressure during pipe testing according to ASME specifications.
Some companies exclusively use hydroblinds for isolation or testing, considering it a safer option. This ensures the blind can withstand latent pressure buildup in the line, unlike the 5/16" thickness isolation blind that might fail if the pressure rises significantly.
This is dependent on the flange's AMSE rating. Sizes and thickness are manufactured to the ASME 16.48, API 590, ASME 16.5 specifications and will hold the pressure that the spec calls for.
We will manufacture your paddle blind(s) in any alloy you require, so long as the material is available.
Our color-coded handles allow you to easily identify the flange rating for the blind(s) you need.
150#: Red
300#: Blue
600#: Yellow
900#: Green
1500#: White
2500#: Orange
Yes. A Paddle Blinds is also referred to as a paddle flange, paddle blank, blind spade, line spade, isolation or test blind, flange skillet, pancake skillet, pancake blind, slip blind, blank blind, and more.