Ring Spacers Flange Manufacturer

What is a Ring Spacer Flange?

A Ring Spacer Flange, also known as a Spacer Ring, is a specialized flange used to maintain space between two flanged joints in a piping system. It is typically a solid, machined metal ring without a bore and is designed to temporarily replace a spade (paddle blind) during maintenance or flow adjustment operations. By inserting a ring spacer between flanges, operators can keep the system open for flow while ensuring proper spacing and alignment between connected components.

Ring Spacer Flanges are manufactured from high-quality materials such as stainless steel, carbon steel, duplex steel, and alloy steel to ensure durability under various pressure and temperature conditions. They are designed according to international standards like ASME B16.48 and are available in different pressure ratings (Class 150 to 2500). These spacers typically feature a handle or tab that allows easy identification and installation. The thickness of the spacer is equal to that of the companion paddle blind, allowing them to be easily interchanged without disturbing the bolt alignment.

Ring Spacer Flanges are widely used in oil & gas, petrochemical, refinery, offshore, and power generation industries for pipeline isolation and maintenance. Their main advantage lies in operational convenience — by swapping between a ring spacer and a spade, maintenance teams can easily switch between open and closed flow conditions without dismantling the piping system. This makes ring spacers an essential component in systems where frequent inspection, cleaning, or line isolation is required for safe and efficient operation.

Standard Specifications for Ring Spacers Flange

Key Dimensional and Pressure Specifications

Dimensions : ANSI B16.48, ANSI B16.47 Series A & B, MSS SP44, ASA, API-605, AWWA, Custom Drawings

Size : 1/2" (15 NB) to 48" (1200NB)

Class : 150 LBS, 300 LBS, 600 LBS, 900 LBS, 1500 LBS, 2500 LBS, DIN Standard ND-6,10, 16, 25, 40 Etc.

DIN : DIN2527, DIN2566, DIN2573, DIN2576, DIN2641, DIN2642, DIN2655, DIN2656, DIN2627, DIN2628, DIN2629, DIN 2631, DIN2632, DIN2633, DIN2634, DIN2635, DIN2636,DIN2637, DIN2638, DIN2673

BS : BS4504 , BS4504, BS1560, BS10

Flange Face Type : Flate Face (FF), Raised Face (RF), Ring Type Joint (RTJ)

Materials and Grades of Ring Spacers Flange

Stainless Steel Ring Spacers :

ASTM A 182, A 240 F 304, 304L, 304H, 316, 316L, 316Ti, 310, 310S, 321, 321H, 317, 347, 347H, 904L

Duplex & Super Duplex Steel Ring Spacers :

ASTM / ASME A/SA 182 F 44, F 45, F51, F 53, F 55, F 60, F 61

Carbon Steel Ring Spacers :

ASTM / ASME A/SA 105 ASTM / ASME A 350 , ASTM A 181 LF 2 / A516 Gr.70 A36, A694 F42, F46, F52, F60, F65, F706

Low Temperature Carbon Steel Ring Spacers :

ASTM A350, LF2, LF3

Alloy Steel Ring Spacers :

ASTM / ASME A/SA 182 & A 387 F1, F5, F9, F11, F12, F22, F91

Copper Alloy Steel Ring Spacers :

ASTM SB 61 , SB62 , SB151 , SB152 UNS No. C 70600 (Cu-Ni 90/10), C 71500 (Cu-Ni 70/30), UNS No. C 10100, 10200, 10300, 10800, 12000, 12200

Nickel Alloy Ring Spacers :

ASTM SB564, SB160, SB472, SB162 Nickel 200 (UNS No. N02200), Nickel 201 (UNS No. N02201), Monel 400 (UNS No. N04400), Monel 500 (UNS No. N05500), Inconel 800 (UNS No. N08800), Inconel 825 (UNS No. N08825), Inconel 600 (UNS No. N06600), Inconel 625 (UNS No. N06625), Inconel 601 (UNS No. N06601), Hastelloy C 276 (UNS No. N10276), Alloy 20 (UNS No. N08020)

ASME B16.48 Ring Spacers (Paddle Spacers) Available Types

Ring Spacers	Paddle Spacers
ANSI B16.48 Ring Spacers	Ring Spacers Dimensions
ASME B16.48 Ring Spacers	ANSI B16.48 Class 150 Ring Spacers
Stainless Steel Paddle Blanks Suppliers	SS Paddle Blanks
Ring Spacers Dealer	ASME B16.47 Series A and B Ring Spacers Exporter
ANSI B16.48 class 150 Ring Spacers Stockholder	ANSI 150 Ring Spacers Distributors
Carbon Steel Paddle Spacers	High Quality Ring Spacers Manufacturer
Stainless Steel Ring Spacers	Duplex Steel Ring Spacers
Super Duplex Steel Ring Spacers	Copper Nickel Ring Spacers
High Nickel Alloy Paddle Spacers	Hastelloy Ring Spacers Stockist
Titanium ASME B16.47 Series A and B Ring Spacers	Inconel Ring Spacers

ASME B16.48 Ring Spacers Flange Application

Stainless Steel Ring Spacers uses in Oil and Gas Pipeline
Ring Spacers uses in Chemical Industry
Alloy Steel Paddle Spacers uses in Plumbing
Flat Faced Ring Spacers uses in Heating
Ring Spacers uses in Water Supply Systems
ANSI B16.48 Ring Spacers uses in Power Plant
Ring Spacers uses in General Purpose Applications
Ring Spacers uses in Structural Pipe

FAQs

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