Anhui Parker New Material Co.,Ltd
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insulation blanket manufacturer
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Stainless Steel Flange Guards

BSTFLEX Stainless Steel Flange Guards are removable metal protection covers designed for industrial flanged connections. The full-cover construction includes a cylindrical stainless steel body, annular side panels around the pipe openings, a hinged opening section and stainless steel latch closure for installation and maintenance access. Guards are custom sized to suit the flange outside diameter, assembled width, pipe diameter and surrounding clearance. Standard reference sizing can be based on HG/T 20592 dimensions, while other flange standards can be reviewed from customer drawings or measured dimensions.
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Product Detail

Stainless Steel Flange Guards for Industrial Piping Systems

BSTFLEX Stainless Steel Flange Guards are removable metal protection covers designed to fit around industrial flanged connections. The guard uses a formed stainless steel body with annular side panels around the pipe openings, together with a hinged opening section and stainless steel latch closure for installation and maintenance access.

This construction provides broader external coverage than an open-sided band guard and is suitable for projects requiring a more enclosed metal cover around the flange assembly. Each guard is sized according to the actual flange geometry, pipe diameter and available installation space.

These products are part of the BSTFLEX Flange & Valve Protection Covers range.


Full-Cover Metal Construction

The guard body surrounds the outside of the flange connection, while annular side panels extend inward around the pipe openings. This geometry helps cover both the flange perimeter and side areas of the assembly.

The product is split so that it can be opened around the installed connection. A hinge on one side allows the body to open, while a stainless steel latch secures the guard after positioning.

The final dimensions and coverage depend on the flange outside diameter, assembled connection width, pipe outside diameter, bolt projection and surrounding equipment clearance.


Product Construction

Item Specification
Product Name Stainless Steel Flange Guards
Brand BSTFLEX
Construction Formed metal body with annular side panels
Opening Design Hinged split construction for installation around the flange
Closure Stainless steel latch closure
Material Stainless steel; required grade to be confirmed during quotation
Sizing Custom matched to flange outside diameter, connection width and pipe diameter
Reference Flange Standard HG/T 20592 dimensions can be used as a reference; other flange standards can be reviewed from drawings
Installation External removable cover fitted around the assembled flange connection


Custom Sizing for Different Flange Standards

Flange guards should not be selected by nominal pipe size alone. Different flange standards and pressure designations can have different outside diameters, thicknesses and bolt arrangements.

For quotation, provide the flange standard, nominal size, pressure designation and actual connection dimensions. Where the flange does not follow HG/T 20592, send the applicable ANSI, ASME, DIN, EN, JIS or other standard together with the relevant dimensional drawing.

Useful dimensions include flange outside diameter, total assembled width, pipe outside diameter, bolt and nut projection and nearby installation restrictions.


Industrial Applications

Stainless steel flange guards are used in industrial piping environments where durable external flange protection is required. Typical project inquiries come from chemical processing plants, pharmaceutical facilities, power generation systems and other process piping installations.

For steam, molten salt or other demanding service conditions, provide the process medium, operating temperature and pressure with the inquiry. Material selection and guard construction must be reviewed against the actual service conditions rather than assumed from the product name alone.


Difference Between Stainless Steel Flange Guards and Band-Type Guards

BSTFLEX also supplies Stainless Steel Band-Type Flange Guards. The band-type design surrounds the flange perimeter while leaving the sides more open.

The product described on this page includes side panels around the pipe openings and therefore provides a more enclosed cover geometry. These products should be selected according to the required coverage, available installation space and project specification.


Installation

Installation should be carried out only when the piping connection is in a safe condition and according to the site's approved work procedures.

  1. Open the latch and swing the guard body open at the hinge.
  2. Position the guard around the flange assembly.
  3. Check clearance around the pipe, bolts, insulation and nearby equipment.
  4. Close the guard body and secure the stainless steel latch.
  5. Confirm that the cover is correctly positioned and does not interfere with adjacent equipment.

The cover should not be forced onto an incorrectly sized flange. During scheduled inspection, check the body, hinge and latch for deformation, damage or corrosion before reuse.


Important Application Notes

A stainless steel flange guard is an external protective cover. It is not a pressure-retaining repair clamp and does not replace the flange gasket, bolting or piping maintenance procedures.

If the application specifically requires spray diffusion, mist suppression, internal mesh construction or verified spray-shield performance, these requirements must be stated in the inquiry. A separate mesh-lined flange guard configuration may be more appropriate depending on the project specification.


Frequently Asked Questions

What information is needed to manufacture a custom stainless steel flange guard?

Provide the flange standard, nominal size, pressure designation, flange outside diameter, assembled width, pipe outside diameter and required quantity. Drawings and photographs are recommended for non-standard installations.

Can stainless steel flange guards be made for ANSI, DIN or JIS flanges?

Yes, custom sizing can be reviewed when the correct flange standard and dimensions are supplied. The guard dimensions should be confirmed from the actual connection or approved flange drawing.

Are these guards the same as stainless steel mesh flange spray shields?

No. This product is defined by its formed full-cover metal housing. Mesh-lined spray shields include an additional internal mesh structure and should be treated as a separate product configuration.

Are stainless steel flange guards removable?

Yes. The hinged body and latch closure allow the guard to be opened and removed during planned inspection and maintenance.

Can the same guard be used on a valve?

Valve protection normally requires separate consideration of the valve body, flange connections, handle or actuator. Individual flange guards may be used on valve connections, while complete valve protection requires a dedicated design.


Request a Custom Stainless Steel Flange Guard Quote

Send BSTFLEX your flange drawing, standard, size, pressure designation and measured dimensions. Include the process medium, operating temperature, pressure, required quantity and any material or documentation requirements.

For non-standard installations, attach front and side photographs showing the complete connection and surrounding equipment.

Request a quotation for Stainless Steel Flange Guards or email your drawings and specifications to sales@pkfiresleeve.com.

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